91 files changed, 1639 insertions, 2236 deletions

diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt
index 1ad26d2c20ae..2f8f24eaefd9 100644
--- a/Documentation/cpusets.txt
+++ b/Documentation/cpusets.txt
@@ -252,8 +252,7 @@ in a tasks processor placement.
 There is an exception to the above.  If hotplug funtionality is used
 to remove all the CPUs that are currently assigned to a cpuset,
 then the kernel will automatically update the cpus_allowed of all
-tasks attached to CPUs in that cpuset with the online CPUs of the
-nearest parent cpuset that still has some CPUs online.  When memory
+tasks attached to CPUs in that cpuset to allow all CPUs.  When memory
 hotplug functionality for removing Memory Nodes is available, a
 similar exception is expected to apply there as well.  In general,
 the kernel prefers to violate cpuset placement, over starving a task
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 44b6eea60ece..b9e6be00cadf 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -25,6 +25,9 @@ APICs
 
    noapictimer   Don't set up the APIC timer
 
+   no_timer_check Don't check the IO-APIC timer. This can work around
+                 problems with incorrect timer initialization on some boards.
+
 Early Console
 
    syntax: earlyprintk=vga
diff --git a/arch/i386/kernel/cpu/amd.c b/arch/i386/kernel/cpu/amd.c
index fa34a06c0d79..73aeaf5a9d4e 100644
--- a/arch/i386/kernel/cpu/amd.c
+++ b/arch/i386/kernel/cpu/amd.c
@@ -195,7 +195,7 @@ static void __init init_amd(struct cpuinfo_x86 *c)
                         c->x86_num_cores = 1;
         }
 
-#ifdef CONFIG_X86_SMP
+#ifdef CONFIG_X86_HT
         /*
          * On a AMD dual core setup the lower bits of the APIC id
          * distingush the cores.  Assumes number of cores is a power
@@ -203,8 +203,11 @@ static void __init init_amd(struct cpuinfo_x86 *c)
          */
         if (c->x86_num_cores > 1) {
                 int cpu = smp_processor_id();
-                /* Fix up the APIC ID following AMD specifications. */
-                cpu_core_id[cpu] >>= hweight32(c->x86_num_cores - 1);
+                unsigned bits = 0;
+                while ((1 << bits) < c->x86_num_cores)
+                        bits++;
+                cpu_core_id[cpu] = phys_proc_id[cpu] & ((1<<bits)-1);
+                phys_proc_id[cpu] >>= bits;
                 printk(KERN_INFO "CPU %d(%d) -> Core %d\n",
                        cpu, c->x86_num_cores, cpu_core_id[cpu]);
         }
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 11e6e6f23fa0..d199e525680a 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -244,11 +244,8 @@ static void __init early_cpu_detect(void)
 
         early_intel_workaround(c);
 
-#ifdef CONFIG_SMP
 #ifdef CONFIG_X86_HT
-        phys_proc_id[smp_processor_id()] =
-#endif
-        cpu_core_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
+        phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
 #endif
 }
 
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index cbea7ac582e5..35bfe138cb1a 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -888,6 +888,7 @@ void *xquad_portio;
 
 cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
 cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
+EXPORT_SYMBOL(cpu_core_map);
 
 static void __init smp_boot_cpus(unsigned int max_cpus)
 {
diff --git a/arch/i386/mm/ioremap.c b/arch/i386/mm/ioremap.c
index db06f7399913..ab542792b27b 100644
--- a/arch/i386/mm/ioremap.c
+++ b/arch/i386/mm/ioremap.c
@@ -238,19 +238,21 @@ void iounmap(volatile void __iomem *addr)
                         addr < phys_to_virt(ISA_END_ADDRESS))
                 return;
 
-        p = remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
+        write_lock(&vmlist_lock);
+        p = __remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr));
         if (!p) { 
-                printk("__iounmap: bad address %p\n", addr);
-                return;
+                printk("iounmap: bad address %p\n", addr);
+                goto out_unlock;
         }
 
         if ((p->flags >> 20) && p->phys_addr < virt_to_phys(high_memory) - 1) {
-                /* p->size includes the guard page, but cpa doesn't like that */
                 change_page_attr(virt_to_page(__va(p->phys_addr)),
                                  p->size >> PAGE_SHIFT,
                                  PAGE_KERNEL);
                 global_flush_tlb();
         } 
+out_unlock:
+        write_unlock(&vmlist_lock);
         kfree(p); 
 }
 
diff --git a/arch/ppc/kernel/head_44x.S b/arch/ppc/kernel/head_44x.S
index 9b6a8e513657..6c7ae6052464 100644
--- a/arch/ppc/kernel/head_44x.S
+++ b/arch/ppc/kernel/head_44x.S
@@ -330,8 +330,9 @@ interrupt_base:
         /* If we are faulting a kernel address, we have to use the
          * kernel page tables.
          */
-        andis.  r11, r10, 0x8000
-        beq     3f
+        lis     r11, TASK_SIZE@h
+        cmplw   r10, r11
+        blt+    3f
         lis     r11, swapper_pg_dir@h
         ori     r11, r11, swapper_pg_dir@l
 
@@ -464,8 +465,9 @@ interrupt_base:
         /* If we are faulting a kernel address, we have to use the
          * kernel page tables.
          */
-        andis.  r11, r10, 0x8000
-        beq     3f
+        lis     r11, TASK_SIZE@h
+        cmplw   r10, r11
+        blt+    3f
         lis     r11, swapper_pg_dir@h
         ori     r11, r11, swapper_pg_dir@l
 
@@ -533,8 +535,9 @@ interrupt_base:
         /* If we are faulting a kernel address, we have to use the
          * kernel page tables.
          */
-        andis.  r11, r10, 0x8000
-        beq     3f
+        lis     r11, TASK_SIZE@h
+        cmplw   r10, r11
+        blt+    3f
         lis     r11, swapper_pg_dir@h
         ori     r11, r11, swapper_pg_dir@l
 
diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c
index 309797d7f96d..5c20266e3b1f 100644
--- a/arch/ppc/kernel/setup.c
+++ b/arch/ppc/kernel/setup.c
@@ -499,7 +499,7 @@ static int __init set_preferred_console(void)
 {
         struct device_node *prom_stdout;
         char *name;
-        int offset;
+        int offset = 0;
 
         if (of_stdout_device == NULL)
                 return -ENODEV;
diff --git a/arch/ppc/lib/string.S b/arch/ppc/lib/string.S
index 8d08a2eb225e..36c9b97fd92a 100644
--- a/arch/ppc/lib/string.S
+++ b/arch/ppc/lib/string.S
@@ -446,6 +446,7 @@ _GLOBAL(__copy_tofrom_user)
 #ifdef CONFIG_8xx
         /* Don't use prefetch on 8xx */
         mtctr   r0
+        li      r0,0
 53:     COPY_16_BYTES_WITHEX(0)
         bdnz    53b
 
@@ -564,7 +565,9 @@ _GLOBAL(__copy_tofrom_user)
 /* or write fault in cacheline loop */
 105:    li      r9,1
 92:     li      r3,LG_CACHELINE_BYTES
-        b       99f
+        mfctr   r8
+        add     r0,r0,r8
+        b       106f
 /* read fault in final word loop */
 108:    li      r9,0
         b       93f
@@ -585,7 +588,7 @@ _GLOBAL(__copy_tofrom_user)
  * r5 + (ctr << r3), and r9 is 0 for read or 1 for write.
  */
 99:     mfctr   r0
-        slw     r3,r0,r3
+106:    slw     r3,r0,r3
         add.    r3,r3,r5
         beq     120f                    /* shouldn't happen */
         cmpwi   0,r9,0
diff --git a/arch/ppc/mm/init.c b/arch/ppc/mm/init.c
index be02a7fec2b7..363c157e3617 100644
--- a/arch/ppc/mm/init.c
+++ b/arch/ppc/mm/init.c
@@ -179,6 +179,7 @@ void free_initmem(void)
         if (!have_of)
                 FREESEC(openfirmware);
         printk("\n");
+        ppc_md.progress = NULL;
 #undef FREESEC
 }
 
diff --git a/arch/ppc/syslib/mpc83xx_devices.c b/arch/ppc/syslib/mpc83xx_devices.c
index 5c1a919eaabf..75c8e9834ae7 100644
--- a/arch/ppc/syslib/mpc83xx_devices.c
+++ b/arch/ppc/syslib/mpc83xx_devices.c
@@ -61,6 +61,7 @@ static struct plat_serial8250_port serial_platform_data[] = {
                 .iotype         = UPIO_MEM,
                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
         },
+        { },
 };
 
 struct platform_device ppc_sys_platform_devices[] = {
diff --git a/arch/ppc/syslib/mpc85xx_devices.c b/arch/ppc/syslib/mpc85xx_devices.c
index a231795ee26f..1e658ef57e75 100644
--- a/arch/ppc/syslib/mpc85xx_devices.c
+++ b/arch/ppc/syslib/mpc85xx_devices.c
@@ -61,6 +61,7 @@ static struct plat_serial8250_port serial_platform_data[] = {
                 .iotype         = UPIO_MEM,
                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ,
         },
+        { },
 };
 
 struct platform_device ppc_sys_platform_devices[] = {
diff --git a/arch/ppc/syslib/open_pic.c b/arch/ppc/syslib/open_pic.c
index 7619e16fccae..9d4ed68b5804 100644
--- a/arch/ppc/syslib/open_pic.c
+++ b/arch/ppc/syslib/open_pic.c
@@ -557,12 +557,10 @@ static void __init openpic_initipi(u_int ipi, u_int pri, u_int vec)
  */
 void openpic_cause_IPI(u_int ipi, cpumask_t cpumask)
 {
-        cpumask_t phys;
         DECL_THIS_CPU;
 
         CHECK_THIS_CPU;
         check_arg_ipi(ipi);
-        phys = physmask(cpumask);
         openpic_write(&OpenPIC->THIS_CPU.IPI_Dispatch(ipi),
                       cpus_addr(physmask(cpumask))[0]);
 }
diff --git a/arch/ppc64/kernel/prom_init.c b/arch/ppc64/kernel/prom_init.c
index 35ec42de962e..6f79b7b9b445 100644
--- a/arch/ppc64/kernel/prom_init.c
+++ b/arch/ppc64/kernel/prom_init.c
@@ -1750,7 +1750,44 @@ static void __init flatten_device_tree(void)
         prom_printf("Device tree struct  0x%x -> 0x%x\n",
                     RELOC(dt_struct_start), RELOC(dt_struct_end));
 
- }
+}
+
+
+static void __init fixup_device_tree(void)
+{
+        unsigned long offset = reloc_offset();
+        phandle u3, i2c, mpic;
+        u32 u3_rev;
+        u32 interrupts[2];
+        u32 parent;
+
+        /* Some G5s have a missing interrupt definition, fix it up here */
+        u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000"));
+        if ((long)u3 <= 0)
+                return;
+        i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000"));
+        if ((long)i2c <= 0)
+                return;
+        mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000"));
+        if ((long)mpic <= 0)
+                return;
+
+        /* check if proper rev of u3 */
+        if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev)) <= 0)
+                return;
+        if (u3_rev != 0x35)
+                return;
+        /* does it need fixup ? */
+        if (prom_getproplen(i2c, "interrupts") > 0)
+                return;
+        /* interrupt on this revision of u3 is number 0 and level */
+        interrupts[0] = 0;
+        interrupts[1] = 1;
+        prom_setprop(i2c, "interrupts", &interrupts, sizeof(interrupts));
+        parent = (u32)mpic;
+        prom_setprop(i2c, "interrupt-parent", &parent, sizeof(parent));
+}
+
 
 static void __init prom_find_boot_cpu(void)
 {
@@ -1920,6 +1957,11 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long
         }
 
         /*
+         * Fixup any known bugs in the device-tree
+         */
+        fixup_device_tree();
+
+        /*
          * Now finally create the flattened device-tree
          */
         prom_printf("copying OF device tree ...\n");
diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c
index 292983413ae2..33ca56c90da2 100644
--- a/arch/sparc64/kernel/pci_iommu.c
+++ b/arch/sparc64/kernel/pci_iommu.c
@@ -8,6 +8,7 @@
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
+#include <linux/delay.h>
 
 #include <asm/pbm.h>
 
@@ -379,6 +380,56 @@ bad:
         return PCI_DMA_ERROR_CODE;
 }
 
+static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, u32 vaddr, unsigned long ctx, unsigned long npages)
+{
+        int limit;
+
+        PCI_STC_FLUSHFLAG_INIT(strbuf);
+        if (strbuf->strbuf_ctxflush &&
+            iommu->iommu_ctxflush) {
+                unsigned long matchreg, flushreg;
+
+                flushreg = strbuf->strbuf_ctxflush;
+                matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
+
+                limit = 100000;
+                pci_iommu_write(flushreg, ctx);
+                for(;;) {
+                        if (((long)pci_iommu_read(matchreg)) >= 0L)
+                                break;
+                        limit--;
+                        if (!limit)
+                                break;
+                        udelay(1);
+                }
+                if (!limit)
+                        printk(KERN_WARNING "pci_strbuf_flush: ctx flush "
+                               "timeout vaddr[%08x] ctx[%lx]\n",
+                               vaddr, ctx);
+        } else {
+                unsigned long i;
+
+                for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
+                        pci_iommu_write(strbuf->strbuf_pflush, vaddr);
+        }
+
+        pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
+        (void) pci_iommu_read(iommu->write_complete_reg);
+
+        limit = 100000;
+        while (!PCI_STC_FLUSHFLAG_SET(strbuf)) {
+                limit--;
+                if (!limit)
+                        break;
+                udelay(1);
+                membar("#LoadLoad");
+        }
+        if (!limit)
+                printk(KERN_WARNING "pci_strbuf_flush: flushflag timeout "
+                       "vaddr[%08x] ctx[%lx] npages[%ld]\n",
+                       vaddr, ctx, npages);
+}
+
 /* Unmap a single streaming mode DMA translation. */
 void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int direction)
 {
@@ -386,7 +437,7 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
         struct pci_iommu *iommu;
         struct pci_strbuf *strbuf;
         iopte_t *base;
-        unsigned long flags, npages, i, ctx;
+        unsigned long flags, npages, ctx;
 
         if (direction == PCI_DMA_NONE)
                 BUG();
@@ -414,29 +465,8 @@ void pci_unmap_single(struct pci_dev *pdev, dma_addr_t bus_addr, size_t sz, int
                 ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
 
         /* Step 1: Kick data out of streaming buffers if necessary. */
-        if (strbuf->strbuf_enabled) {
-                u32 vaddr = bus_addr;
-
-                PCI_STC_FLUSHFLAG_INIT(strbuf);
-                if (strbuf->strbuf_ctxflush &&
-                    iommu->iommu_ctxflush) {
-                        unsigned long matchreg, flushreg;
-
-                        flushreg = strbuf->strbuf_ctxflush;
-                        matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
-                        do {
-                                pci_iommu_write(flushreg, ctx);
-                        } while(((long)pci_iommu_read(matchreg)) < 0L);
-                } else {
-                        for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
-                                pci_iommu_write(strbuf->strbuf_pflush, vaddr);
-                }
-
-                pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
-                (void) pci_iommu_read(iommu->write_complete_reg);
-                while (!PCI_STC_FLUSHFLAG_SET(strbuf))
-                        membar("#LoadLoad");
-        }
+        if (strbuf->strbuf_enabled)
+                pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
 
         /* Step 2: Clear out first TSB entry. */
         iopte_make_dummy(iommu, base);
@@ -647,29 +677,8 @@ void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sglist, int nelems,
                 ctx = (iopte_val(*base) & IOPTE_CONTEXT) >> 47UL;
 
         /* Step 1: Kick data out of streaming buffers if necessary. */
-        if (strbuf->strbuf_enabled) {
-                u32 vaddr = (u32) bus_addr;
-
-                PCI_STC_FLUSHFLAG_INIT(strbuf);
-                if (strbuf->strbuf_ctxflush &&
-                    iommu->iommu_ctxflush) {
-                        unsigned long matchreg, flushreg;
-
-                        flushreg = strbuf->strbuf_ctxflush;
-                        matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
-                        do {
-                                pci_iommu_write(flushreg, ctx);
-                        } while(((long)pci_iommu_read(matchreg)) < 0L);
-                } else {
-                        for (i = 0; i < npages; i++, vaddr += IO_PAGE_SIZE)
-                                pci_iommu_write(strbuf->strbuf_pflush, vaddr);
-                }
-
-                pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
-                (void) pci_iommu_read(iommu->write_complete_reg);
-                while (!PCI_STC_FLUSHFLAG_SET(strbuf))
-                        membar("#LoadLoad");
-        }
+        if (strbuf->strbuf_enabled)
+                pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
 
         /* Step 2: Clear out first TSB entry. */
         iopte_make_dummy(iommu, base);
@@ -715,28 +724,7 @@ void pci_dma_sync_single_for_cpu(struct pci_dev *pdev, dma_addr_t bus_addr, size
         }
 
         /* Step 2: Kick data out of streaming buffers. */
-        PCI_STC_FLUSHFLAG_INIT(strbuf);
-        if (iommu->iommu_ctxflush &&
-            strbuf->strbuf_ctxflush) {
-                unsigned long matchreg, flushreg;
-
-                flushreg = strbuf->strbuf_ctxflush;
-                matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
-                do {
-                        pci_iommu_write(flushreg, ctx);
-                } while(((long)pci_iommu_read(matchreg)) < 0L);
-        } else {
-                unsigned long i;
-
-                for (i = 0; i < npages; i++, bus_addr += IO_PAGE_SIZE)
-                        pci_iommu_write(strbuf->strbuf_pflush, bus_addr);
-        }
-
-        /* Step 3: Perform flush synchronization sequence. */
-        pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
-        (void) pci_iommu_read(iommu->write_complete_reg);
-        while (!PCI_STC_FLUSHFLAG_SET(strbuf))
-                membar("#LoadLoad");
+        pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
 
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
@@ -749,7 +737,8 @@ void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, i
         struct pcidev_cookie *pcp;
         struct pci_iommu *iommu;
         struct pci_strbuf *strbuf;
-        unsigned long flags, ctx;
+        unsigned long flags, ctx, npages, i;
+        u32 bus_addr;
 
         pcp = pdev->sysdata;
         iommu = pcp->pbm->iommu;
@@ -772,36 +761,14 @@ void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev, struct scatterlist *sglist, i
         }
 
         /* Step 2: Kick data out of streaming buffers. */
-        PCI_STC_FLUSHFLAG_INIT(strbuf);
-        if (iommu->iommu_ctxflush &&
-            strbuf->strbuf_ctxflush) {
-                unsigned long matchreg, flushreg;
-
-                flushreg = strbuf->strbuf_ctxflush;
-                matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
-                do {
-                        pci_iommu_write(flushreg, ctx);
-                } while (((long)pci_iommu_read(matchreg)) < 0L);
-        } else {
-                unsigned long i, npages;
-                u32 bus_addr;
-
-                bus_addr = sglist[0].dma_address & IO_PAGE_MASK;
-
-                for(i = 1; i < nelems; i++)
-                        if (!sglist[i].dma_length)
-                                break;
-                i--;
-                npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length) - bus_addr) >> IO_PAGE_SHIFT;
-                for (i = 0; i < npages; i++, bus_addr += IO_PAGE_SIZE)
-                        pci_iommu_write(strbuf->strbuf_pflush, bus_addr);
-        }
-
-        /* Step 3: Perform flush synchronization sequence. */
-        pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa);
-        (void) pci_iommu_read(iommu->write_complete_reg);
-        while (!PCI_STC_FLUSHFLAG_SET(strbuf))
-                membar("#LoadLoad");
+        bus_addr = sglist[0].dma_address & IO_PAGE_MASK;
+        for(i = 1; i < nelems; i++)
+                if (!sglist[i].dma_length)
+                        break;
+        i--;
+        npages = (IO_PAGE_ALIGN(sglist[i].dma_address + sglist[i].dma_length)
+                  - bus_addr) >> IO_PAGE_SHIFT;
+        pci_strbuf_flush(strbuf, iommu, bus_addr, ctx, npages);
 
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
diff --git a/arch/sparc64/kernel/sbus.c b/arch/sparc64/kernel/sbus.c
index 14d9c3a21b9a..76ea6455433f 100644
--- a/arch/sparc64/kernel/sbus.c
+++ b/arch/sparc64/kernel/sbus.c
@@ -117,19 +117,34 @@ static void iommu_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages
 
 #define STRBUF_TAG_VALID        0x02UL
 
-static void strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages)
+static void sbus_strbuf_flush(struct sbus_iommu *iommu, u32 base, unsigned long npages)
 {
+        unsigned long n;
+        int limit;
+
         iommu->strbuf_flushflag = 0UL;
-        while (npages--)
-                upa_writeq(base + (npages << IO_PAGE_SHIFT),
+        n = npages;
+        while (n--)
+                upa_writeq(base + (n << IO_PAGE_SHIFT),
                            iommu->strbuf_regs + STRBUF_PFLUSH);
 
         /* Whoopee cushion! */
         upa_writeq(__pa(&iommu->strbuf_flushflag),
                    iommu->strbuf_regs + STRBUF_FSYNC);
         upa_readq(iommu->sbus_control_reg);
-        while (iommu->strbuf_flushflag == 0UL)
+
+        limit = 100000;
+        while (iommu->strbuf_flushflag == 0UL) {
+                limit--;
+                if (!limit)
+                        break;
+                udelay(1);
                 membar("#LoadLoad");
+        }
+        if (!limit)
+                printk(KERN_WARNING "sbus_strbuf_flush: flushflag timeout "
+                       "vaddr[%08x] npages[%ld]\n",
+                       base, npages);
 }
 
 static iopte_t *alloc_streaming_cluster(struct sbus_iommu *iommu, unsigned long npages)
@@ -406,7 +421,7 @@ void sbus_unmap_single(struct sbus_dev *sdev, dma_addr_t dma_addr, size_t size,
 
         spin_lock_irqsave(&iommu->lock, flags);
         free_streaming_cluster(iommu, dma_base, size >> IO_PAGE_SHIFT);
-        strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT);
+        sbus_strbuf_flush(iommu, dma_base, size >> IO_PAGE_SHIFT);
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -569,7 +584,7 @@ void sbus_unmap_sg(struct sbus_dev *sdev, struct scatterlist *sg, int nents, int
         iommu = sdev->bus->iommu;
         spin_lock_irqsave(&iommu->lock, flags);
         free_streaming_cluster(iommu, dvma_base, size >> IO_PAGE_SHIFT);
-        strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT);
+        sbus_strbuf_flush(iommu, dvma_base, size >> IO_PAGE_SHIFT);
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -581,7 +596,7 @@ void sbus_dma_sync_single_for_cpu(struct sbus_dev *sdev, dma_addr_t base, size_t
         size = (IO_PAGE_ALIGN(base + size) - (base & IO_PAGE_MASK));
 
         spin_lock_irqsave(&iommu->lock, flags);
-        strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT);
+        sbus_strbuf_flush(iommu, base & IO_PAGE_MASK, size >> IO_PAGE_SHIFT);
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
@@ -605,7 +620,7 @@ void sbus_dma_sync_sg_for_cpu(struct sbus_dev *sdev, struct scatterlist *sg, int
         size = IO_PAGE_ALIGN(sg[i].dma_address + sg[i].dma_length) - base;
 
         spin_lock_irqsave(&iommu->lock, flags);
-        strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT);
+        sbus_strbuf_flush(iommu, base, size >> IO_PAGE_SHIFT);
         spin_unlock_irqrestore(&iommu->lock, flags);
 }
 
diff --git a/arch/um/Kconfig_x86_64 b/arch/um/Kconfig_x86_64
index fd8d7e8982b1..f162f50f0b17 100644
--- a/arch/um/Kconfig_x86_64
+++ b/arch/um/Kconfig_x86_64
@@ -6,6 +6,10 @@ config 64BIT
         bool
         default y
 
+config TOP_ADDR
+        hex
+        default 0x80000000
+
 config 3_LEVEL_PGTABLES
        bool
        default y
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 0150038af795..14a12d6b3df6 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -20,9 +20,17 @@
 #include "os.h"
 
 #ifdef CONFIG_NOCONFIG_CHAN
+
+/* The printk's here are wrong because we are complaining that there is no
+ * output device, but printk is printing to that output device.  The user will
+ * never see the error.  printf would be better, except it can't run on a
+ * kernel stack because it will overflow it.
+ * Use printk for now since that will avoid crashing.
+ */
+
 static void *not_configged_init(char *str, int device, struct chan_opts *opts)
 {
-        printf(KERN_ERR "Using a channel type which is configured out of "
+        printk(KERN_ERR "Using a channel type which is configured out of "
                "UML\n");
         return(NULL);
 }
@@ -30,27 +38,27 @@ static void *not_configged_init(char *str, int device, struct chan_opts *opts)
 static int not_configged_open(int input, int output, int primary, void *data,
                               char **dev_out)
 {
-        printf(KERN_ERR "Using a channel type which is configured out of "
+        printk(KERN_ERR "Using a channel type which is configured out of "
                "UML\n");
         return(-ENODEV);
 }
 
 static void not_configged_close(int fd, void *data)
 {
-        printf(KERN_ERR "Using a channel type which is configured out of "
+        printk(KERN_ERR "Using a channel type which is configured out of "
                "UML\n");
 }
 
 static int not_configged_read(int fd, char *c_out, void *data)
 {
-        printf(KERN_ERR "Using a channel type which is configured out of "
+        printk(KERN_ERR "Using a channel type which is configured out of "
                "UML\n");
         return(-EIO);
 }
 
 static int not_configged_write(int fd, const char *buf, int len, void *data)
 {
-        printf(KERN_ERR "Using a channel type which is configured out of "
+        printk(KERN_ERR "Using a channel type which is configured out of "
                "UML\n");
         return(-EIO);
 }
@@ -58,7 +66,7 @@ static int not_configged_write(int fd, const char *buf, int len, void *data)
 static int not_configged_console_write(int fd, const char *buf, int len,
                                        void *data)
 {
-        printf(KERN_ERR "Using a channel type which is configured out of "
+        printk(KERN_ERR "Using a channel type which is configured out of "
                "UML\n");
         return(-EIO);
 }
@@ -66,7 +74,7 @@ static int not_configged_console_write(int fd, const char *buf, int len,
 static int not_configged_window_size(int fd, void *data, unsigned short *rows,
                                      unsigned short *cols)
 {
-        printf(KERN_ERR "Using a channel type which is configured out of "
+        printk(KERN_ERR "Using a channel type which is configured out of "
                "UML\n");
         return(-ENODEV);
 }
diff --git a/arch/um/drivers/mcast_kern.c b/arch/um/drivers/mcast_kern.c
index faf714e87b5b..217438cdef33 100644
--- a/arch/um/drivers/mcast_kern.c
+++ b/arch/um/drivers/mcast_kern.c
@@ -73,7 +73,6 @@ int mcast_setup(char *str, char **mac_out, void *data)
         struct mcast_init *init = data;
         char *port_str = NULL, *ttl_str = NULL, *remain;
         char *last;
-        int n;
 
         *init = ((struct mcast_init)
                 { .addr         = "239.192.168.1",
@@ -89,13 +88,12 @@ int mcast_setup(char *str, char **mac_out, void *data)
         }
         
         if(port_str != NULL){
-                n = simple_strtoul(port_str, &last, 10);
+                init->port = simple_strtoul(port_str, &last, 10);
                 if((*last != '\0') || (last == port_str)){
                         printk(KERN_ERR "mcast_setup - Bad port : '%s'\n", 
                                port_str);
                         return(0);
                 }
-                init->port = htons(n);
         }
 
         if(ttl_str != NULL){
diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c
index 0fe1d9fa9139..7a0d115b29d0 100644
--- a/arch/um/drivers/mcast_user.c
+++ b/arch/um/drivers/mcast_user.c
@@ -38,7 +38,7 @@ static struct sockaddr_in *new_addr(char *addr, unsigned short port)
         }
         sin->sin_family = AF_INET;
         sin->sin_addr.s_addr = in_aton(addr);
-        sin->sin_port = port;
+        sin->sin_port = htons(port);
         return(sin);
 }
 
@@ -55,28 +55,25 @@ static int mcast_open(void *data)
         struct mcast_data *pri = data;
         struct sockaddr_in *sin = pri->mcast_addr;
         struct ip_mreq mreq;
-        int fd, yes = 1;
+        int fd = -EINVAL, yes = 1, err = -EINVAL;;
 
 
-        if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0)) {
-                fd = -EINVAL;
+        if ((sin->sin_addr.s_addr == 0) || (sin->sin_port == 0))
                 goto out;
-        }
 
         fd = socket(AF_INET, SOCK_DGRAM, 0);
+
         if (fd < 0){
                 printk("mcast_open : data socket failed, errno = %d\n", 
                        errno);
-                fd = -ENOMEM;
+                fd = -errno;
                 goto out;
         }
 
         if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) < 0) {
                 printk("mcast_open: SO_REUSEADDR failed, errno = %d\n",
                         errno);
-                os_close_file(fd);
-                fd = -EINVAL;
-                goto out;
+                goto out_close;
         }
 
         /* set ttl according to config */
@@ -84,26 +81,20 @@ static int mcast_open(void *data)
                        sizeof(pri->ttl)) < 0) {
                 printk("mcast_open: IP_MULTICAST_TTL failed, error = %d\n",
                         errno);
-                os_close_file(fd);
-                fd = -EINVAL;
-                goto out;
+                goto out_close;
         }
 
         /* set LOOP, so data does get fed back to local sockets */
         if (setsockopt(fd, SOL_IP, IP_MULTICAST_LOOP, &yes, sizeof(yes)) < 0) {
                 printk("mcast_open: IP_MULTICAST_LOOP failed, error = %d\n",
                         errno);
-                os_close_file(fd);
-                fd = -EINVAL;
-                goto out;
+                goto out_close;
         }
 
         /* bind socket to mcast address */
         if (bind(fd, (struct sockaddr *) sin, sizeof(*sin)) < 0) {
                 printk("mcast_open : data bind failed, errno = %d\n", errno);
-                os_close_file(fd);
-                fd = -EINVAL;
-                goto out;
+                goto out_close;
         }               
         
         /* subscribe to the multicast group */
@@ -117,12 +108,15 @@ static int mcast_open(void *data)
                        "interface on the host.\n");
                 printk("eth0 should be configured in order to use the "
                        "multicast transport.\n");
-                os_close_file(fd);
-                fd = -EINVAL;
+                goto out_close;
         }
 
  out:
-        return(fd);
+        return fd;
+
+ out_close:
+        os_close_file(fd);
+        return err;
 }
 
 static void mcast_close(int fd, void *data)
@@ -164,14 +158,3 @@ struct net_user_info mcast_user_info = {
         .delete_address = NULL,
         .max_packet     = MAX_PACKET - ETH_HEADER_OTHER
 };
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 9a56ff94308d..88f956c34fed 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -55,7 +55,7 @@
 #include "mem_kern.h"
 #include "cow.h"
 
-enum ubd_req { UBD_READ, UBD_WRITE, UBD_MMAP };
+enum ubd_req { UBD_READ, UBD_WRITE };
 
 struct io_thread_req {
         enum ubd_req op;
@@ -68,8 +68,6 @@ struct io_thread_req {
         unsigned long sector_mask;
         unsigned long long cow_offset;
         unsigned long bitmap_words[2];
-        int map_fd;
-        unsigned long long map_offset;
         int error;
 };
 
@@ -122,10 +120,6 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
 
 #define MAX_DEV (8)
 
-/* Changed in early boot */
-static int ubd_do_mmap = 0;
-#define UBD_MMAP_BLOCK_SIZE PAGE_SIZE
-
 static struct block_device_operations ubd_blops = {
         .owner          = THIS_MODULE,
         .open           = ubd_open,
@@ -175,12 +169,6 @@ struct ubd {
         int no_cow;
         struct cow cow;
         struct platform_device pdev;
-
-        int map_writes;
-        int map_reads;
-        int nomap_writes;
-        int nomap_reads;
-        int write_maps;
 };
 
 #define DEFAULT_COW { \
@@ -200,11 +188,6 @@ struct ubd {
         .openflags =            OPEN_FLAGS, \
         .no_cow =               0, \
         .cow =                  DEFAULT_COW, \
-        .map_writes             = 0, \
-        .map_reads              = 0, \
-        .nomap_writes           = 0, \
-        .nomap_reads            = 0, \
-        .write_maps             = 0, \
 }
 
 struct ubd ubd_dev[MAX_DEV] = { [ 0 ... MAX_DEV - 1 ] = DEFAULT_UBD };
@@ -314,13 +297,6 @@ static int ubd_setup_common(char *str, int *index_out)
                 int major;
 
                 str++;
-                if(!strcmp(str, "mmap")){
-                        CHOOSE_MODE(printk("mmap not supported by the ubd "
-                                           "driver in tt mode\n"),
-                                    ubd_do_mmap = 1);
-                        return(0);
-                }
-
                 if(!strcmp(str, "sync")){
                         global_openflags = of_sync(global_openflags);
                         return(0);
@@ -524,7 +500,7 @@ static void ubd_handler(void)
 {
         struct io_thread_req req;
         struct request *rq = elv_next_request(ubd_queue);
-        int n, err;
+        int n;
 
         do_ubd = NULL;
         intr_count++;
@@ -538,19 +514,6 @@ static void ubd_handler(void)
                 return;
         }
         
-        if((req.op != UBD_MMAP) &&
-           ((req.offset != ((__u64) (rq->sector)) << 9) ||
-            (req.length != (rq->current_nr_sectors) << 9)))
-                panic("I/O op mismatch");
-        
-        if(req.map_fd != -1){
-                err = physmem_subst_mapping(req.buffer, req.map_fd,
-                                            req.map_offset, 1);
-                if(err)
-                        printk("ubd_handler - physmem_subst_mapping failed, "
-                               "err = %d\n", -err);
-        }
-
         ubd_finish(rq, req.error);
         reactivate_fd(thread_fd, UBD_IRQ);      
         do_ubd_request(ubd_queue);
@@ -583,14 +546,10 @@ static int ubd_file_size(struct ubd *dev, __u64 *size_out)
 
 static void ubd_close(struct ubd *dev)
 {
-        if(ubd_do_mmap)
-                physmem_forget_descriptor(dev->fd);
         os_close_file(dev->fd);
         if(dev->cow.file == NULL)
                 return;
 
-        if(ubd_do_mmap)
-                physmem_forget_descriptor(dev->cow.fd);
         os_close_file(dev->cow.fd);
         vfree(dev->cow.bitmap);
         dev->cow.bitmap = NULL;
@@ -1010,94 +969,13 @@ static void cowify_req(struct io_thread_req *req, unsigned long *bitmap,
                            req->bitmap_words, bitmap_len);
 }
 
-static int mmap_fd(struct request *req, struct ubd *dev, __u64 offset)
-{
-        __u64 sector;
-        unsigned char *bitmap;
-        int bit, i;
-
-        /* mmap must have been requested on the command line */
-        if(!ubd_do_mmap)
-                return(-1);
-
-        /* The buffer must be page aligned */
-        if(((unsigned long) req->buffer % UBD_MMAP_BLOCK_SIZE) != 0)
-                return(-1);
-
-        /* The request must be a page long */
-        if((req->current_nr_sectors << 9) != PAGE_SIZE)
-                return(-1);
-
-        if(dev->cow.file == NULL)
-                return(dev->fd);
-
-        sector = offset >> 9;
-        bitmap = (unsigned char *) dev->cow.bitmap;
-        bit = ubd_test_bit(sector, bitmap);
-
-        for(i = 1; i < req->current_nr_sectors; i++){
-                if(ubd_test_bit(sector + i, bitmap) != bit)
-                        return(-1);
-        }
-
-        if(bit || (rq_data_dir(req) == WRITE))
-                offset += dev->cow.data_offset;
-
-        /* The data on disk must be page aligned */
-        if((offset % UBD_MMAP_BLOCK_SIZE) != 0)
-                return(-1);
-
-        return(bit ? dev->fd : dev->cow.fd);
-}
-
-static int prepare_mmap_request(struct ubd *dev, int fd, __u64 offset,
-                                struct request *req,
-                                struct io_thread_req *io_req)
-{
-        int err;
-
-        if(rq_data_dir(req) == WRITE){
-                /* Writes are almost no-ops since the new data is already in the
-                 * host page cache
-                 */
-                dev->map_writes++;
-                if(dev->cow.file != NULL)
-                        cowify_bitmap(io_req->offset, io_req->length,
-                                      &io_req->sector_mask, &io_req->cow_offset,
-                                      dev->cow.bitmap, dev->cow.bitmap_offset,
-                                      io_req->bitmap_words,
-                                      dev->cow.bitmap_len);
-        }
-        else {
-                int w;
-
-                if((dev->cow.file != NULL) && (fd == dev->cow.fd))
-                        w = 0;
-                else w = dev->openflags.w;
-
-                if((dev->cow.file != NULL) && (fd == dev->fd))
-                        offset += dev->cow.data_offset;
-
-                err = physmem_subst_mapping(req->buffer, fd, offset, w);
-                if(err){
-                        printk("physmem_subst_mapping failed, err = %d\n",
-                               -err);
-                        return(1);
-                }
-                dev->map_reads++;
-        }
-        io_req->op = UBD_MMAP;
-        io_req->buffer = req->buffer;
-        return(0);
-}
-
 /* Called with ubd_io_lock held */
 static int prepare_request(struct request *req, struct io_thread_req *io_req)
 {
         struct gendisk *disk = req->rq_disk;
         struct ubd *dev = disk->private_data;
         __u64 offset;
-        int len, fd;
+        int len;
 
         if(req->rq_status == RQ_INACTIVE) return(1);
 
@@ -1114,34 +992,12 @@ static int prepare_request(struct request *req, struct io_thread_req *io_req)
 
         io_req->fds[0] = (dev->cow.file != NULL) ? dev->cow.fd : dev->fd;
         io_req->fds[1] = dev->fd;
-        io_req->map_fd = -1;
         io_req->cow_offset = -1;
         io_req->offset = offset;
         io_req->length = len;
         io_req->error = 0;
         io_req->sector_mask = 0;
 
-        fd = mmap_fd(req, dev, io_req->offset);
-        if(fd > 0){
-                /* If mmapping is otherwise OK, but the first access to the
-                 * page is a write, then it's not mapped in yet.  So we have
-                 * to write the data to disk first, then we can map the disk
-                 * page in and continue normally from there.
-                 */
-                if((rq_data_dir(req) == WRITE) && !is_remapped(req->buffer)){
-                        io_req->map_fd = dev->fd;
-                        io_req->map_offset = io_req->offset +
-                                dev->cow.data_offset;
-                        dev->write_maps++;
-                }
-                else return(prepare_mmap_request(dev, fd, io_req->offset, req,
-                                                 io_req));
-        }
-
-        if(rq_data_dir(req) == READ)
-                dev->nomap_reads++;
-        else dev->nomap_writes++;
-
         io_req->op = (rq_data_dir(req) == READ) ? UBD_READ : UBD_WRITE;
         io_req->offsets[0] = 0;
         io_req->offsets[1] = dev->cow.data_offset;
@@ -1229,143 +1085,6 @@ static int ubd_ioctl(struct inode * inode, struct file * file,
         return(-EINVAL);
 }
 
-static int ubd_check_remapped(int fd, unsigned long address, int is_write,
-                              __u64 offset)
-{
-        __u64 bitmap_offset;
-        unsigned long new_bitmap[2];
-        int i, err, n;
-
-        /* If it's not a write access, we can't do anything about it */
-        if(!is_write)
-                return(0);
-
-        /* We have a write */
-        for(i = 0; i < sizeof(ubd_dev) / sizeof(ubd_dev[0]); i++){
-                struct ubd *dev = &ubd_dev[i];
-
-                if((dev->fd != fd) && (dev->cow.fd != fd))
-                        continue;
-
-                /* It's a write to a ubd device */
-
-                /* This should be impossible now */
-                if(!dev->openflags.w){
-                        /* It's a write access on a read-only device - probably
-                         * shouldn't happen.  If the kernel is trying to change
-                         * something with no intention of writing it back out,
-                         * then this message will clue us in that this needs
-                         * fixing
-                         */
-                        printk("Write access to mapped page from readonly ubd "
-                               "device %d\n", i);
-                        return(0);
-                }
-
-                /* It's a write to a writeable ubd device - it must be COWed
-                 * because, otherwise, the page would have been mapped in
-                 * writeable
-                 */
-
-                if(!dev->cow.file)
-                        panic("Write fault on writeable non-COW ubd device %d",
-                              i);
-
-                /* It should also be an access to the backing file since the
-                 * COW pages should be mapped in read-write
-                 */
-
-                if(fd == dev->fd)
-                        panic("Write fault on a backing page of ubd "
-                              "device %d\n", i);
-
-                /* So, we do the write, copying the backing data to the COW
-                 * file...
-                 */
-
-                err = os_seek_file(dev->fd, offset + dev->cow.data_offset);
-                if(err < 0)
-                        panic("Couldn't seek to %lld in COW file of ubd "
-                              "device %d, err = %d",
-                              offset + dev->cow.data_offset, i, -err);
-
-                n = os_write_file(dev->fd, (void *) address, PAGE_SIZE);
-                if(n != PAGE_SIZE)
-                        panic("Couldn't copy data to COW file of ubd "
-                              "device %d, err = %d", i, -n);
-
-                /* ... updating the COW bitmap... */
-
-                cowify_bitmap(offset, PAGE_SIZE, NULL, &bitmap_offset,
-                              dev->cow.bitmap, dev->cow.bitmap_offset,
-                              new_bitmap, dev->cow.bitmap_len);
-
-                err = os_seek_file(dev->fd, bitmap_offset);
-                if(err < 0)
-                        panic("Couldn't seek to %lld in COW file of ubd "
-                              "device %d, err = %d", bitmap_offset, i, -err);
-
-                n = os_write_file(dev->fd, new_bitmap, sizeof(new_bitmap));
-                if(n != sizeof(new_bitmap))
-                        panic("Couldn't update bitmap  of ubd device %d, "
-                              "err = %d", i, -n);
-
-                /* Maybe we can map the COW page in, and maybe we can't.  If
-                 * it is a pre-V3 COW file, we can't, since the alignment will
-                 * be wrong.  If it is a V3 or later COW file which has been
-                 * moved to a system with a larger page size, then maybe we
-                 * can't, depending on the exact location of the page.
-                 */
-
-                offset += dev->cow.data_offset;
-
-                /* Remove the remapping, putting the original anonymous page
-                 * back.  If the COW file can be mapped in, that is done.
-                 * Otherwise, the COW page is read in.
-                 */
-
-                if(!physmem_remove_mapping((void *) address))
-                        panic("Address 0x%lx not remapped by ubd device %d",
-                              address, i);
-                if((offset % UBD_MMAP_BLOCK_SIZE) == 0)
-                        physmem_subst_mapping((void *) address, dev->fd,
-                                              offset, 1);
-                else {
-                        err = os_seek_file(dev->fd, offset);
-                        if(err < 0)
-                                panic("Couldn't seek to %lld in COW file of "
-                                      "ubd device %d, err = %d", offset, i,
-                                      -err);
-
-                        n = os_read_file(dev->fd, (void *) address, PAGE_SIZE);
-                        if(n != PAGE_SIZE)
-                                panic("Failed to read page from offset %llx of "
-                                      "COW file of ubd device %d, err = %d",
-                                      offset, i, -n);
-                }
-
-                return(1);
-        }
-
-        /* It's not a write on a ubd device */
-        return(0);
-}
-
-static struct remapper ubd_remapper = {
-        .list   = LIST_HEAD_INIT(ubd_remapper.list),
-        .proc   = ubd_check_remapped,
-};
-
-static int ubd_remapper_setup(void)
-{
-        if(ubd_do_mmap)
-                register_remapper(&ubd_remapper);
-
-        return(0);
-}
-
-__initcall(ubd_remapper_setup);
-
 static int same_backing_files(char *from_cmdline, char *from_cow, char *cow)
 {
         struct uml_stat buf1, buf2;
@@ -1568,15 +1287,6 @@ void do_io(struct io_thread_req *req)
         int err;
         __u64 off;
 
-        if(req->op == UBD_MMAP){
-                /* Touch the page to force the host to do any necessary IO to
-                 * get it into memory
-                 */
-                n = *((volatile int *) req->buffer);
-                req->error = update_bitmap(req);
-                return;
-        }
-
         nsectors = req->length / req->sectorsize;
         start = 0;
         do {
diff --git a/arch/um/include/sysdep-i386/ptrace.h b/arch/um/include/sysdep-i386/ptrace.h
index 84ec7ff5cf8c..6eaeb9919983 100644
--- a/arch/um/include/sysdep-i386/ptrace.h
+++ b/arch/um/include/sysdep-i386/ptrace.h
@@ -31,7 +31,6 @@ extern int sysemu_supported;
 #ifdef UML_CONFIG_MODE_SKAS
 
 #include "skas_ptregs.h"
-#include "sysdep/faultinfo.h"
 
 #define REGS_IP(r) ((r)[HOST_IP])
 #define REGS_SP(r) ((r)[HOST_SP])
@@ -59,6 +58,7 @@ extern int sysemu_supported;
 #define PTRACE_SYSEMU_SINGLESTEP 32
 #endif
 
+#include "sysdep/faultinfo.h"
 #include "choose-mode.h"
 
 union uml_pt_regs {
diff --git a/arch/um/include/sysdep-x86_64/checksum.h b/arch/um/include/sysdep-x86_64/checksum.h
index 572c6c19be33..ea97005af694 100644
--- a/arch/um/include/sysdep-x86_64/checksum.h
+++ b/arch/um/include/sysdep-x86_64/checksum.h
@@ -9,8 +9,6 @@
 #include "linux/in6.h"
 #include "asm/uaccess.h"
 
-extern unsigned int csum_partial_copy_from(const unsigned char *src, unsigned char *dst, int len,
-                                           int sum, int *err_ptr);
 extern unsigned csum_partial(const unsigned char *buff, unsigned len,
                              unsigned sum);
 
@@ -31,10 +29,15 @@ unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char *
 }
 
 static __inline__
-unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char *dst,
-                                         int len, int sum, int *err_ptr)
+unsigned int csum_partial_copy_from_user(const unsigned char *src,
+                                         unsigned char *dst, int len, int sum,
+                                         int *err_ptr)
 {
-        return csum_partial_copy_from(src, dst, len, sum, err_ptr);
+        if(copy_from_user(dst, src, len)){
+                *err_ptr = -EFAULT;
+                return(-1);
+        }
+        return csum_partial(dst, len, sum);
 }
 
 /**
@@ -137,15 +140,6 @@ static inline unsigned add32_with_carry(unsigned a, unsigned b)
         return a;
 }
 
-#endif
+extern unsigned short ip_compute_csum(unsigned char * buff, int len);
 
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+#endif
diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h
index 348e8fcd513f..be8acd5efd97 100644
--- a/arch/um/include/sysdep-x86_64/ptrace.h
+++ b/arch/um/include/sysdep-x86_64/ptrace.h
@@ -135,6 +135,7 @@ extern int mode_tt;
         __CHOOSE_MODE(SC_EFLAGS(UPT_SC(r)), REGS_EFLAGS((r)->skas.regs))
 #define UPT_SC(r) ((r)->tt.sc)
 #define UPT_SYSCALL_NR(r) __CHOOSE_MODE((r)->tt.syscall, (r)->skas.syscall)
+#define UPT_SYSCALL_RET(r) UPT_RAX(r)
 
 extern int user_context(unsigned long sp);
 
@@ -196,32 +197,32 @@ struct syscall_args {
 
 
 #define UPT_SET(regs, reg, val) \
-        ({      unsigned long val; \
+        ({      unsigned long __upt_val = val; \
                 switch(reg){ \
-                case R8: UPT_R8(regs) = val; break; \
-                case R9: UPT_R9(regs) = val; break; \
-                case R10: UPT_R10(regs) = val; break; \
-                case R11: UPT_R11(regs) = val; break; \
-                case R12: UPT_R12(regs) = val; break; \
-                case R13: UPT_R13(regs) = val; break; \
-                case R14: UPT_R14(regs) = val; break; \
-                case R15: UPT_R15(regs) = val; break; \
-                case RIP: UPT_IP(regs) = val; break; \
-                case RSP: UPT_SP(regs) = val; break; \
-                case RAX: UPT_RAX(regs) = val; break; \
-                case RBX: UPT_RBX(regs) = val; break; \
-                case RCX: UPT_RCX(regs) = val; break; \
-                case RDX: UPT_RDX(regs) = val; break; \
-                case RSI: UPT_RSI(regs) = val; break; \
-                case RDI: UPT_RDI(regs) = val; break; \
-                case RBP: UPT_RBP(regs) = val; break; \
-                case ORIG_RAX: UPT_ORIG_RAX(regs) = val; break; \
-                case CS: UPT_CS(regs) = val; break; \
-                case DS: UPT_DS(regs) = val; break; \
-                case ES: UPT_ES(regs) = val; break; \
-                case FS: UPT_FS(regs) = val; break; \
-                case GS: UPT_GS(regs) = val; break; \
-                case EFLAGS: UPT_EFLAGS(regs) = val; break; \
+                case R8: UPT_R8(regs) = __upt_val; break; \
+                case R9: UPT_R9(regs) = __upt_val; break; \
+                case R10: UPT_R10(regs) = __upt_val; break; \
+                case R11: UPT_R11(regs) = __upt_val; break; \
+                case R12: UPT_R12(regs) = __upt_val; break; \
+                case R13: UPT_R13(regs) = __upt_val; break; \
+                case R14: UPT_R14(regs) = __upt_val; break; \
+                case R15: UPT_R15(regs) = __upt_val; break; \
+                case RIP: UPT_IP(regs) = __upt_val; break; \
+                case RSP: UPT_SP(regs) = __upt_val; break; \
+                case RAX: UPT_RAX(regs) = __upt_val; break; \
+                case RBX: UPT_RBX(regs) = __upt_val; break; \
+                case RCX: UPT_RCX(regs) = __upt_val; break; \
+                case RDX: UPT_RDX(regs) = __upt_val; break; \
+                case RSI: UPT_RSI(regs) = __upt_val; break; \
+                case RDI: UPT_RDI(regs) = __upt_val; break; \
+                case RBP: UPT_RBP(regs) = __upt_val; break; \
+                case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \
+                case CS: UPT_CS(regs) = __upt_val; break; \
+                case DS: UPT_DS(regs) = __upt_val; break; \
+                case ES: UPT_ES(regs) = __upt_val; break; \
+                case FS: UPT_FS(regs) = __upt_val; break; \
+                case GS: UPT_GS(regs) = __upt_val; break; \
+                case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \
                 default :  \
                         panic("Bad register in UPT_SET : %d\n", reg);  \
                         break; \
@@ -245,14 +246,3 @@ struct syscall_args {
         CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo))
 
 #endif
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index 9736ca27c5f0..a8918e80df96 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -14,7 +14,7 @@ obj-y = config.o exec_kern.o exitcode.o \
         tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o umid.o \
         user_util.o
 
-obj-$(CONFIG_BLK_DEV_INITRD) += initrd_kern.o initrd_user.o
+obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
 obj-$(CONFIG_GPROF)     += gprof_syms.o
 obj-$(CONFIG_GCOV)      += gmon_syms.o
 obj-$(CONFIG_TTY_LOG)   += tty_log.o
diff --git a/arch/um/kernel/checksum.c b/arch/um/kernel/checksum.c
deleted file mode 100644
index e69de29bb2d1..000000000000
--- a/arch/um/kernel/checksum.c
+++ /dev/null
diff --git a/arch/um/kernel/initrd.c b/arch/um/kernel/initrd.c
new file mode 100644
index 000000000000..82ecf904b09c
--- /dev/null
+++ b/arch/um/kernel/initrd.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/init.h"
+#include "linux/bootmem.h"
+#include "linux/initrd.h"
+#include "asm/types.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "initrd.h"
+#include "init.h"
+#include "os.h"
+
+/* Changed by uml_initrd_setup, which is a setup */
+static char *initrd __initdata = NULL;
+
+static int __init read_initrd(void)
+{
+        void *area;
+        long long size;
+        int err;
+
+        if(initrd == NULL) return 0;
+        err = os_file_size(initrd, &size);
+        if(err) return 0;
+        area = alloc_bootmem(size);
+        if(area == NULL) return 0;
+        if(load_initrd(initrd, area, size) == -1) return 0;
+        initrd_start = (unsigned long) area;
+        initrd_end = initrd_start + size;
+        return 0;
+}
+
+__uml_postsetup(read_initrd);
+
+static int __init uml_initrd_setup(char *line, int *add)
+{
+        initrd = line;
+        return 0;
+}
+
+__uml_setup("initrd=", uml_initrd_setup,
+"initrd=<initrd image>\n"
+"    This is used to boot UML from an initrd image.  The argument is the\n"
+"    name of the file containing the image.\n\n"
+);
+
+int load_initrd(char *filename, void *buf, int size)
+{
+        int fd, n;
+
+        fd = os_open_file(filename, of_read(OPENFLAGS()), 0);
+        if(fd < 0){
+                printk("Opening '%s' failed - err = %d\n", filename, -fd);
+                return(-1);
+        }
+        n = os_read_file(fd, buf, size);
+        if(n != size){
+                printk("Read of %d bytes from '%s' failed, err = %d\n", size,
+                       filename, -n);
+                return(-1);
+        }
+
+        os_close_file(fd);
+        return(0);
+}
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 78d69dc74b26..99439fa15ef4 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -57,6 +57,7 @@ EXPORT_SYMBOL(copy_to_user_tt);
 EXPORT_SYMBOL(strncpy_from_user_skas);
 EXPORT_SYMBOL(copy_to_user_skas);
 EXPORT_SYMBOL(copy_from_user_skas);
+EXPORT_SYMBOL(clear_user_skas);
 #endif
 EXPORT_SYMBOL(uml_strdup);
 
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index f156661781cb..c22825f13e40 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -100,12 +100,37 @@ void mem_init(void)
 #endif
 }
 
+/*
+ * Create a page table and place a pointer to it in a middle page
+ * directory entry.
+ */
+static void __init one_page_table_init(pmd_t *pmd)
+{
+        if (pmd_none(*pmd)) {
+                pte_t *pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+                set_pmd(pmd, __pmd(_KERNPG_TABLE +
+                                           (unsigned long) __pa(pte)));
+                if (pte != pte_offset_kernel(pmd, 0))
+                        BUG();
+        }
+}
+
+static void __init one_md_table_init(pud_t *pud)
+{
+#ifdef CONFIG_3_LEVEL_PGTABLES
+        pmd_t *pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+        set_pud(pud, __pud(_KERNPG_TABLE + (unsigned long) __pa(pmd_table)));
+        if (pmd_table != pmd_offset(pud, 0))
+                BUG();
+#endif
+}
+
 static void __init fixrange_init(unsigned long start, unsigned long end, 
                                  pgd_t *pgd_base)
 {
         pgd_t *pgd;
+        pud_t *pud;
         pmd_t *pmd;
-        pte_t *pte;
         int i, j;
         unsigned long vaddr;
 
@@ -115,15 +140,12 @@ static void __init fixrange_init(unsigned long start, unsigned long end,
         pgd = pgd_base + i;
 
         for ( ; (i < PTRS_PER_PGD) && (vaddr < end); pgd++, i++) {
-                pmd = (pmd_t *)pgd;
+                pud = pud_offset(pgd, vaddr);
+                if (pud_none(*pud))
+                        one_md_table_init(pud);
+                pmd = pmd_offset(pud, vaddr);
                 for (; (j < PTRS_PER_PMD) && (vaddr != end); pmd++, j++) {
-                        if (pmd_none(*pmd)) {
-                                pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
-                                set_pmd(pmd, __pmd(_KERNPG_TABLE + 
-                                                   (unsigned long) __pa(pte)));
-                                if (pte != pte_offset_kernel(pmd, 0))
-                                        BUG();
-                        }
+                        one_page_table_init(pmd);
                         vaddr += PMD_SIZE;
                 }
                 j = 0;
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 2b75d8d9ba73..2925e15324de 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -28,9 +28,9 @@ static inline void set_singlestepping(struct task_struct *child, int on)
         child->thread.singlestep_syscall = 0;
 
 #ifdef SUBARCH_SET_SINGLESTEPPING
-        SUBARCH_SET_SINGLESTEPPING(child, on)
+        SUBARCH_SET_SINGLESTEPPING(child, on);
 #endif
-                }
+}
 
 /*
  * Called by kernel/ptrace.c when detaching..
@@ -83,7 +83,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
         }
 
 #ifdef SUBACH_PTRACE_SPECIAL
-        SUBARCH_PTRACE_SPECIAL(child,request,addr,data)
+        SUBARCH_PTRACE_SPECIAL(child,request,addr,data);
 #endif
 
         ret = ptrace_check_attach(child, request == PTRACE_KILL);
diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c
index 5fca2c61eb98..1de22d8a313a 100644
--- a/arch/um/kernel/trap_kern.c
+++ b/arch/um/kernel/trap_kern.c
@@ -57,10 +57,11 @@ int handle_page_fault(unsigned long address, unsigned long ip,
         *code_out = SEGV_ACCERR;
         if(is_write && !(vma->vm_flags & VM_WRITE)) 
                 goto out;
+
+        if(!(vma->vm_flags & (VM_READ | VM_EXEC)))
+                goto out;
+
         page = address & PAGE_MASK;
-        pgd = pgd_offset(mm, page);
-        pud = pud_offset(pgd, page);
-        pmd = pmd_offset(pud, page);
         do {
  survive:
                 switch (handle_mm_fault(mm, vma, address, is_write)){
@@ -106,33 +107,6 @@ out_of_memory:
         goto out;
 }
 
-LIST_HEAD(physmem_remappers);
-
-void register_remapper(struct remapper *info)
-{
-        list_add(&info->list, &physmem_remappers);
-}
-
-static int check_remapped_addr(unsigned long address, int is_write)
-{
-        struct remapper *remapper;
-        struct list_head *ele;
-        __u64 offset;
-        int fd;
-
-        fd = phys_mapping(__pa(address), &offset);
-        if(fd == -1)
-                return(0);
-
-        list_for_each(ele, &physmem_remappers){
-                remapper = list_entry(ele, struct remapper, list);
-                if((*remapper->proc)(fd, address, is_write, offset))
-                        return(1);
-        }
-
-        return(0);
-}
-
 /*
  * We give a *copy* of the faultinfo in the regs to segv.
  * This must be done, since nesting SEGVs could overwrite
@@ -151,8 +125,6 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
                 flush_tlb_kernel_vm();
                 return(0);
         }
-        else if(check_remapped_addr(address & PAGE_MASK, is_write))
-                return(0);
         else if(current->mm == NULL)
                 panic("Segfault with no mm");
         err = handle_page_fault(address, ip, is_write, is_user, &si.si_code);
diff --git a/arch/um/kernel/tt/ksyms.c b/arch/um/kernel/tt/ksyms.c
index 92ec85d67c7c..84a9385a8fef 100644
--- a/arch/um/kernel/tt/ksyms.c
+++ b/arch/um/kernel/tt/ksyms.c
@@ -12,6 +12,7 @@ EXPORT_SYMBOL(__do_copy_to_user);
 EXPORT_SYMBOL(__do_strncpy_from_user);
 EXPORT_SYMBOL(__do_strnlen_user); 
 EXPORT_SYMBOL(__do_clear_user);
+EXPORT_SYMBOL(clear_user_tt);
 
 EXPORT_SYMBOL(tracing_pid);
 EXPORT_SYMBOL(honeypot);
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 76eadb309189..dd5355500bdc 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -73,6 +73,8 @@ SECTIONS
 
   .got           : { *(.got.plt) *(.got) }
   .dynamic       : { *(.dynamic) }
+  .tdata          : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+  .tbss           : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
   /* We want the small data sections together, so single-instruction offsets
      can access them all, and initialized data all before uninitialized, so
      we can shorten the on-disk segment size.  */
diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
index fcd67c3414e4..4351e5605506 100644
--- a/arch/um/sys-i386/Makefile
+++ b/arch/um/sys-i386/Makefile
@@ -9,11 +9,11 @@ USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o
 
 SYMLINKS = bitops.c semaphore.c highmem.c module.c
 
+include arch/um/scripts/Makefile.rules
+
 bitops.c-dir = lib
 semaphore.c-dir = kernel
 highmem.c-dir = mm
 module.c-dir = kernel
 
 subdir- := util
-
-include arch/um/scripts/Makefile.rules
diff --git a/arch/um/sys-i386/delay.c b/arch/um/sys-i386/delay.c
index e9892eef51ce..2c11b9770e8b 100644
--- a/arch/um/sys-i386/delay.c
+++ b/arch/um/sys-i386/delay.c
@@ -1,5 +1,7 @@
-#include "linux/delay.h"
-#include "asm/param.h"
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <asm/param.h>
 
 void __delay(unsigned long time)
 {
@@ -20,13 +22,19 @@ void __udelay(unsigned long usecs)
         int i, n;
 
         n = (loops_per_jiffy * HZ * usecs) / MILLION;
-        for(i=0;i<n;i++) ;
+        for(i=0;i<n;i++)
+                cpu_relax();
 }
 
+EXPORT_SYMBOL(__udelay);
+
 void __const_udelay(unsigned long usecs)
 {
         int i, n;
 
         n = (loops_per_jiffy * HZ * usecs) / MILLION;
-        for(i=0;i<n;i++) ;
+        for(i=0;i<n;i++)
+                cpu_relax();
 }
+
+EXPORT_SYMBOL(__const_udelay);
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
index 3d7da911cc8c..608466ad6b22 100644
--- a/arch/um/sys-x86_64/Makefile
+++ b/arch/um/sys-x86_64/Makefile
@@ -14,11 +14,11 @@ obj-$(CONFIG_MODULES) += module.o um_module.o
 
 USER_OBJS := ptrace_user.o sigcontext.o
 
-include arch/um/scripts/Makefile.rules
-
 SYMLINKS = bitops.c csum-copy.S csum-partial.c csum-wrappers.c memcpy.S \
         semaphore.c thunk.S module.c
 
+include arch/um/scripts/Makefile.rules
+
 bitops.c-dir = lib
 csum-copy.S-dir = lib
 csum-partial.c-dir = lib
@@ -28,6 +28,4 @@ semaphore.c-dir = kernel
 thunk.S-dir = lib
 module.c-dir = kernel
 
-CFLAGS_csum-partial.o := -Dcsum_partial=arch_csum_partial
-
 subdir- := util
diff --git a/arch/um/sys-x86_64/delay.c b/arch/um/sys-x86_64/delay.c
index 651332aeec22..137f4446b439 100644
--- a/arch/um/sys-x86_64/delay.c
+++ b/arch/um/sys-x86_64/delay.c
@@ -5,40 +5,37 @@
  * Licensed under the GPL
  */
 
-#include "linux/delay.h"
-#include "asm/processor.h"
-#include "asm/param.h"
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <asm/processor.h>
+#include <asm/param.h>
 
 void __delay(unsigned long loops)
 {
         unsigned long i;
 
-        for(i = 0; i < loops; i++) ;
+        for(i = 0; i < loops; i++)
+                cpu_relax();
 }
 
 void __udelay(unsigned long usecs)
 {
-        int i, n;
+        unsigned long i, n;
 
         n = (loops_per_jiffy * HZ * usecs) / MILLION;
-        for(i=0;i<n;i++) ;
+        for(i=0;i<n;i++)
+                cpu_relax();
 }
 
+EXPORT_SYMBOL(__udelay);
+
 void __const_udelay(unsigned long usecs)
 {
-        int i, n;
+        unsigned long i, n;
 
         n = (loops_per_jiffy * HZ * usecs) / MILLION;
-        for(i=0;i<n;i++) ;
+        for(i=0;i<n;i++)
+                cpu_relax();
 }
 
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only.  This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
+EXPORT_SYMBOL(__const_udelay);
diff --git a/arch/um/sys-x86_64/ksyms.c b/arch/um/sys-x86_64/ksyms.c
index a27f0ee6a4f6..859273808203 100644
--- a/arch/um/sys-x86_64/ksyms.c
+++ b/arch/um/sys-x86_64/ksyms.c
@@ -16,5 +16,4 @@ EXPORT_SYMBOL(__up_wakeup);
 EXPORT_SYMBOL(__memcpy);
 
 /* Networking helper routines. */
-/*EXPORT_SYMBOL(csum_partial_copy_from);
-EXPORT_SYMBOL(csum_partial_copy_to);*/
+EXPORT_SYMBOL(ip_compute_csum);
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
index b593bb256f2c..74eee5c7c6dd 100644
--- a/arch/um/sys-x86_64/ptrace.c
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -5,10 +5,11 @@
  */
 
 #define __FRAME_OFFSETS
-#include "asm/ptrace.h"
-#include "linux/sched.h"
-#include "linux/errno.h"
-#include "asm/elf.h"
+#include <asm/ptrace.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include <asm/elf.h>
 
 /* XXX x86_64 */
 unsigned long not_ss;
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index dd9914642b8e..d4a59657fb99 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -15,6 +15,7 @@
 #include "asm/unistd.h"
 #include "asm/prctl.h" /* XXX This should get the constants from libc */
 #include "choose-mode.h"
+#include "kern.h"
 
 asmlinkage long sys_uname64(struct new_utsname __user * name)
 {
diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c
index 5e14792e4838..513d17ceafd4 100644
--- a/arch/um/sys-x86_64/user-offsets.c
+++ b/arch/um/sys-x86_64/user-offsets.c
@@ -3,6 +3,14 @@
 #include <signal.h>
 #define __FRAME_OFFSETS
 #include <asm/ptrace.h>
+#include <asm/types.h>
+/* For some reason, x86_64 defines u64 and u32 only in <pci/types.h>, which I
+ * refuse to include here, even though they're used throughout the headers.
+ * These are used in asm/user.h, and that include can't be avoided because of
+ * the sizeof(struct user_regs_struct) below.
+ */
+typedef __u64 u64;
+typedef __u32 u32;
 #include <asm/user.h>
 
 #define DEFINE(sym, val) \
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index ac7684324954..80e9b498c443 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -42,6 +42,8 @@
 
 int sis_apic_bug; /* not actually supported, dummy for compile */
 
+static int no_timer_check;
+
 static DEFINE_SPINLOCK(ioapic_lock);
 
 /*
@@ -1601,7 +1603,7 @@ static inline void check_timer(void)
                  * Ok, does IRQ0 through the IOAPIC work?
                  */
                 unmask_IO_APIC_irq(0);
-                if (timer_irq_works()) {
+                if (!no_timer_check && timer_irq_works()) {
                         nmi_watchdog_default();
                         if (nmi_watchdog == NMI_IO_APIC) {
                                 disable_8259A_irq(0);
@@ -1671,6 +1673,13 @@ static inline void check_timer(void)
         panic("IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter\n");
 }
 
+static int __init notimercheck(char *s)
+{
+        no_timer_check = 1;
+        return 1;
+}
+__setup("no_timer_check", notimercheck);
+
 /*
  *
  * IRQ's that are handled by the PIC in the MPS IOAPIC case.
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index 60dc9b98951d..525f6a128a27 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -380,7 +380,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
                         break;
 
                 switch (addr) { 
-                case 0 ... sizeof(struct user_regs_struct):
+                case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
                         tmp = getreg(child, addr);
                         break;
                 case offsetof(struct user, u_debugreg[0]):
@@ -425,7 +425,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
                         break;
 
                 switch (addr) { 
-                case 0 ... sizeof(struct user_regs_struct): 
+                case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
                         ret = putreg(child, addr, data);
                         break;
                 /* Disallows to set a breakpoint into the vsyscall */
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index b9fd0252c279..99f038ede23c 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -719,7 +719,6 @@ static void __init display_cacheinfo(struct cpuinfo_x86 *c)
         }
 }
 
-#ifdef CONFIG_SMP
 /*
  * On a AMD dual core setup the lower bits of the APIC id distingush the cores.
  * Assumes number of cores is a power of two.
@@ -729,16 +728,24 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
 #ifdef CONFIG_SMP
         int cpu = smp_processor_id();
         int node = 0;
+        unsigned bits;
         if (c->x86_num_cores == 1)
                 return;
-        /* Fix up the APIC ID following the AMD specification. */
-        cpu_core_id[cpu] >>= hweight32(c->x86_num_cores - 1);
+
+        bits = 0;
+        while ((1 << bits) < c->x86_num_cores)
+                bits++;
+
+        /* Low order bits define the core id (index of core in socket) */
+        cpu_core_id[cpu] = phys_proc_id[cpu] & ((1 << bits)-1);
+        /* Convert the APIC ID into the socket ID */
+        phys_proc_id[cpu] >>= bits;
 
 #ifdef CONFIG_NUMA
         /* When an ACPI SRAT table is available use the mappings from SRAT
            instead. */
         if (acpi_numa <= 0) {
-                node = cpu_core_id[cpu];
+                node = phys_proc_id[cpu];
                 if (!node_online(node))
                         node = first_node(node_online_map);
                 cpu_to_node[cpu] = node;
@@ -746,18 +753,11 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
                 node = cpu_to_node[cpu];
         }
 #endif
-        /* For now: - better than BAD_APIC_ID at least*/
-        phys_proc_id[cpu] = cpu_core_id[cpu];
 
         printk(KERN_INFO "CPU %d(%d) -> Node %d -> Core %d\n",
                         cpu, c->x86_num_cores, node, cpu_core_id[cpu]);
 #endif
 }
-#else
-static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
-{
-}
-#endif
 
 static int __init init_amd(struct cpuinfo_x86 *c)
 {
@@ -963,8 +963,7 @@ void __init early_identify_cpu(struct cpuinfo_x86 *c)
         }
 
 #ifdef CONFIG_SMP
-        phys_proc_id[smp_processor_id()] =
-        cpu_core_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
+        phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
 #endif
 }
 
diff --git a/arch/x86_64/kernel/signal.c b/arch/x86_64/kernel/signal.c
index d439ced150c6..3fdcdba0fec5 100644
--- a/arch/x86_64/kernel/signal.c
+++ b/arch/x86_64/kernel/signal.c
@@ -452,7 +452,9 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
                         regs->rip -= 2;
                 }
                 if (regs->rax == (unsigned long)-ERESTART_RESTARTBLOCK) {
-                        regs->rax = __NR_restart_syscall;
+                        regs->rax = test_thread_flag(TIF_IA32) ?
+                                        __NR_ia32_restart_syscall :
+                                        __NR_restart_syscall;
                         regs->rip -= 2;
                 }
         }
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 5abdee1e16a5..f1ec0f345941 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -94,6 +94,7 @@ int smp_threads_ready;
 
 cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
 cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
+EXPORT_SYMBOL(cpu_core_map);
 
 /*
  * Trampoline 80x86 program as an array.
diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
index c6fb0cb69992..58aac23760ef 100644
--- a/arch/x86_64/mm/ioremap.c
+++ b/arch/x86_64/mm/ioremap.c
@@ -133,7 +133,7 @@ ioremap_change_attr(unsigned long phys_addr, unsigned long size,
                                         unsigned long flags)
 {
         int err = 0;
-        if (flags && phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT)) {
+        if (phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT)) {
                 unsigned long npages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
                 unsigned long vaddr = (unsigned long) __va(phys_addr);
 
@@ -214,7 +214,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
                 remove_vm_area((void *)(PAGE_MASK & (unsigned long) addr));
                 return NULL;
         }
-        if (ioremap_change_attr(phys_addr, size, flags) < 0) {
+        if (flags && ioremap_change_attr(phys_addr, size, flags) < 0) {
                 area->flags &= 0xffffff;
                 vunmap(addr);
                 return NULL;
@@ -251,7 +251,7 @@ void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
 
 void iounmap(volatile void __iomem *addr)
 {
-        struct vm_struct *p, **pprev;
+        struct vm_struct *p;
 
         if (addr <= high_memory) 
                 return; 
@@ -260,24 +260,11 @@ void iounmap(volatile void __iomem *addr)
                 return;
 
         write_lock(&vmlist_lock);
-        for (p = vmlist, pprev = &vmlist; p != NULL; pprev = &p->next, p = *pprev)
-                if (p->addr == (void *)(PAGE_MASK & (unsigned long)addr))
-                        break;
-        if (!p) { 
-                printk("__iounmap: bad address %p\n", addr);
-                goto out_unlock;
-        }
-        *pprev = p->next;
-        unmap_vm_area(p);
-        if ((p->flags >> 20) &&
-                p->phys_addr + p->size - 1 < virt_to_phys(high_memory)) {
-                /* p->size includes the guard page, but cpa doesn't like that */
-                change_page_attr_addr((unsigned long)__va(p->phys_addr),
-                                 p->size >> PAGE_SHIFT,
-                                 PAGE_KERNEL);
-                global_flush_tlb();
-        } 
-out_unlock:
+        p = __remove_vm_area((void *)((unsigned long)addr & PAGE_MASK));
+        if (!p)
+                printk("iounmap: bad address %p\n", addr);
+        else if (p->flags >> 20)
+                ioremap_change_attr(p->phys_addr, p->size, 0);
         write_unlock(&vmlist_lock);
         kfree(p); 
 }
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index b9a6b7ad64f3..bc56770bcc90 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2021,7 +2021,13 @@ static int pkt_open(struct inode *inode, struct file *file)
         BUG_ON(pd->refcnt < 0);
 
         pd->refcnt++;
-        if (pd->refcnt == 1) {
+        if (pd->refcnt > 1) {
+                if ((file->f_mode & FMODE_WRITE) &&
+                    !test_bit(PACKET_WRITABLE, &pd->flags)) {
+                        ret = -EBUSY;
+                        goto out_dec;
+                }
+        } else {
                 if (pkt_open_dev(pd, file->f_mode & FMODE_WRITE)) {
                         ret = -EIO;
                         goto out_dec;
diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c
index 49d67f5384a2..4bb9af736fba 100644
--- a/drivers/char/ipmi/ipmi_devintf.c
+++ b/drivers/char/ipmi/ipmi_devintf.c
@@ -44,6 +44,7 @@
 #include <linux/ipmi.h>
 #include <asm/semaphore.h>
 #include <linux/init.h>
+#include <linux/device.h>
 
 #define IPMI_DEVINTF_VERSION "v33"
 
@@ -519,15 +520,21 @@ MODULE_PARM_DESC(ipmi_major, "Sets the major number of the IPMI device.  By"
                  " interface.  Other values will set the major device number"
                  " to that value.");
 
+static struct class *ipmi_class;
+
 static void ipmi_new_smi(int if_num)
 {
-        devfs_mk_cdev(MKDEV(ipmi_major, if_num),
-                      S_IFCHR | S_IRUSR | S_IWUSR,
+        dev_t dev = MKDEV(ipmi_major, if_num);
+
+        devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR,
                       "ipmidev/%d", if_num);
+
+        class_simple_device_add(ipmi_class, dev, NULL, "ipmi%d", if_num);
 }
 
 static void ipmi_smi_gone(int if_num)
 {
+        class_simple_device_remove(ipmi_class, MKDEV(ipmi_major, if_num));
         devfs_remove("ipmidev/%d", if_num);
 }
 
@@ -548,8 +555,15 @@ static __init int init_ipmi_devintf(void)
         printk(KERN_INFO "ipmi device interface version "
                IPMI_DEVINTF_VERSION "\n");
 
+        ipmi_class = class_simple_create(THIS_MODULE, "ipmi");
+        if (IS_ERR(ipmi_class)) {
+                printk(KERN_ERR "ipmi: can't register device class\n");
+                return PTR_ERR(ipmi_class);
+        }
+
         rv = register_chrdev(ipmi_major, DEVICE_NAME, &ipmi_fops);
         if (rv < 0) {
+                class_simple_destroy(ipmi_class);
                 printk(KERN_ERR "ipmi: can't get major %d\n", ipmi_major);
                 return rv;
         }
@@ -563,6 +577,7 @@ static __init int init_ipmi_devintf(void)
         rv = ipmi_smi_watcher_register(&smi_watcher);
         if (rv) {
                 unregister_chrdev(ipmi_major, DEVICE_NAME);
+                class_simple_destroy(ipmi_class);
                 printk(KERN_WARNING "ipmi: can't register smi watcher\n");
                 return rv;
         }
@@ -573,6 +588,7 @@ module_init(init_ipmi_devintf);
 
 static __exit void cleanup_ipmi(void)
 {
+        class_simple_destroy(ipmi_class);
         ipmi_smi_watcher_unregister(&smi_watcher);
         devfs_remove(DEVICE_NAME);
         unregister_chrdev(ipmi_major, DEVICE_NAME);
diff --git a/drivers/i2c/busses/i2c-keywest.c b/drivers/i2c/busses/i2c-keywest.c
index dd0d4c463146..867d443e7133 100644
--- a/drivers/i2c/busses/i2c-keywest.c
+++ b/drivers/i2c/busses/i2c-keywest.c
@@ -516,6 +516,11 @@ create_iface(struct device_node *np, struct device *dev)
         u32 *psteps, *prate;
         int rc;
 
+        if (np->n_intrs < 1 || np->n_addrs < 1) {
+                printk(KERN_ERR "%s: Missing interrupt or address !\n",
+                       np->full_name);
+                return -ENODEV;
+        }
         if (pmac_low_i2c_lock(np))
                 return -ENODEV;
 
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/mmc_block.c
index b5b4a7b11903..d4eee99c2bf6 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/mmc_block.c
@@ -383,7 +383,10 @@ static int mmc_blk_probe(struct mmc_card *card)
         struct mmc_blk_data *md;
         int err;
 
-        if (card->csd.cmdclass & ~0x1ff)
+        /*
+         * Check that the card supports the command class(es) we need.
+         */
+        if (!(card->csd.cmdclass & CCC_BLOCK_READ))
                 return -ENODEV;
 
         if (card->csd.read_blkbits < 9) {
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index f79b02e80e75..4d2bdbdd34e8 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -420,7 +420,8 @@ static void tg3_enable_ints(struct tg3 *tp)
 {
         tw32(TG3PCI_MISC_HOST_CTRL,
              (tp->misc_host_ctrl & ~MISC_HOST_CTRL_MASK_PCI_INT));
-        tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000000);
+        tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
+                     (tp->last_tag << 24));
         tr32(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW);
 
         tg3_cond_int(tp);
@@ -455,10 +456,16 @@ static void tg3_restart_ints(struct tg3 *tp)
 {
         tw32(TG3PCI_MISC_HOST_CTRL,
                 (tp->misc_host_ctrl & ~MISC_HOST_CTRL_MASK_PCI_INT));
-        tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000000);
+        tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
+                     tp->last_tag << 24);
         mmiowb();
 
-        if (tg3_has_work(tp))
+        /* When doing tagged status, this work check is unnecessary.
+         * The last_tag we write above tells the chip which piece of
+         * work we've completed.
+         */
+        if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) &&
+            tg3_has_work(tp))
                 tw32(HOSTCC_MODE, tp->coalesce_mode |
                      (HOSTCC_MODE_ENABLE | HOSTCC_MODE_NOW));
 }
@@ -2500,7 +2507,7 @@ static int tg3_setup_phy(struct tg3 *tp, int force_reset)
         if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
                 if (netif_carrier_ok(tp->dev)) {
                         tw32(HOSTCC_STAT_COAL_TICKS,
-                             DEFAULT_STAT_COAL_TICKS);
+                             tp->coal.stats_block_coalesce_usecs);
                 } else {
                         tw32(HOSTCC_STAT_COAL_TICKS, 0);
                 }
@@ -2886,7 +2893,6 @@ static int tg3_poll(struct net_device *netdev, int *budget)
          * All RX "locking" is done by ensuring outside
          * code synchronizes with dev->poll()
          */
-        done = 1;
         if (sblk->idx[0].rx_producer != tp->rx_rcb_ptr) {
                 int orig_budget = *budget;
                 int work_done;
@@ -2898,12 +2904,14 @@ static int tg3_poll(struct net_device *netdev, int *budget)
 
                 *budget -= work_done;
                 netdev->quota -= work_done;
-
-                if (work_done >= orig_budget)
-                        done = 0;
         }
 
+        if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)
+                tp->last_tag = sblk->status_tag;
+        rmb();
+
         /* if no more work, tell net stack and NIC we're done */
+        done = !tg3_has_work(tp);
         if (done) {
                 spin_lock_irqsave(&tp->lock, flags);
                 __netif_rx_complete(netdev);
@@ -2928,22 +2936,21 @@ static irqreturn_t tg3_msi(int irq, void *dev_id, struct pt_regs *regs)
         spin_lock_irqsave(&tp->lock, flags);
 
         /*
-         * writing any value to intr-mbox-0 clears PCI INTA# and
+         * Writing any value to intr-mbox-0 clears PCI INTA# and
          * chip-internal interrupt pending events.
-         * writing non-zero to intr-mbox-0 additional tells the
+         * Writing non-zero to intr-mbox-0 additional tells the
          * NIC to stop sending us irqs, engaging "in-intr-handler"
          * event coalescing.
          */
         tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0x00000001);
+        tp->last_tag = sblk->status_tag;
         sblk->status &= ~SD_STATUS_UPDATED;
-
         if (likely(tg3_has_work(tp)))
                 netif_rx_schedule(dev);         /* schedule NAPI poll */
         else {
-                /* no work, re-enable interrupts
-                 */
+                /* No work, re-enable interrupts.  */
                 tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
-                             0x00000000);
+                             tp->last_tag << 24);
         }
 
         spin_unlock_irqrestore(&tp->lock, flags);
@@ -2969,21 +2976,62 @@ static irqreturn_t tg3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
         if ((sblk->status & SD_STATUS_UPDATED) ||
             !(tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
                 /*
-                 * writing any value to intr-mbox-0 clears PCI INTA# and
+                 * Writing any value to intr-mbox-0 clears PCI INTA# and
                  * chip-internal interrupt pending events.
-                 * writing non-zero to intr-mbox-0 additional tells the
+                 * Writing non-zero to intr-mbox-0 additional tells the
                  * NIC to stop sending us irqs, engaging "in-intr-handler"
                  * event coalescing.
                  */
                 tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
                              0x00000001);
+                sblk->status &= ~SD_STATUS_UPDATED;
+                if (likely(tg3_has_work(tp)))
+                        netif_rx_schedule(dev);         /* schedule NAPI poll */
+                else {
+                        /* No work, shared interrupt perhaps?  re-enable
+                         * interrupts, and flush that PCI write
+                         */
+                        tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
+                                0x00000000);
+                        tr32(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW);
+                }
+        } else {        /* shared interrupt */
+                handled = 0;
+        }
+
+        spin_unlock_irqrestore(&tp->lock, flags);
+
+        return IRQ_RETVAL(handled);
+}
+
+static irqreturn_t tg3_interrupt_tagged(int irq, void *dev_id, struct pt_regs *regs)
+{
+        struct net_device *dev = dev_id;
+        struct tg3 *tp = netdev_priv(dev);
+        struct tg3_hw_status *sblk = tp->hw_status;
+        unsigned long flags;
+        unsigned int handled = 1;
+
+        spin_lock_irqsave(&tp->lock, flags);
+
+        /* In INTx mode, it is possible for the interrupt to arrive at
+         * the CPU before the status block posted prior to the interrupt.
+         * Reading the PCI State register will confirm whether the
+         * interrupt is ours and will flush the status block.
+         */
+        if ((sblk->status & SD_STATUS_UPDATED) ||
+            !(tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
                 /*
-                 * Flush PCI write.  This also guarantees that our
-                 * status block has been flushed to host memory.
+                 * writing any value to intr-mbox-0 clears PCI INTA# and
+                 * chip-internal interrupt pending events.
+                 * writing non-zero to intr-mbox-0 additional tells the
+                 * NIC to stop sending us irqs, engaging "in-intr-handler"
+                 * event coalescing.
                  */
-                tr32(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW);
+                tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
+                             0x00000001);
+                tp->last_tag = sblk->status_tag;
                 sblk->status &= ~SD_STATUS_UPDATED;
-
                 if (likely(tg3_has_work(tp)))
                         netif_rx_schedule(dev);         /* schedule NAPI poll */
                 else {
@@ -2991,7 +3039,7 @@ static irqreturn_t tg3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
                          * interrupts, and flush that PCI write
                          */
                         tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW,
-                                0x00000000);
+                                     tp->last_tag << 24);
                         tr32(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW);
                 }
         } else {        /* shared interrupt */
@@ -5044,6 +5092,27 @@ static void tg3_set_bdinfo(struct tg3 *tp, u32 bdinfo_addr,
 }
 
 static void __tg3_set_rx_mode(struct net_device *);
+static void tg3_set_coalesce(struct tg3 *tp, struct ethtool_coalesce *ec)
+{
+        tw32(HOSTCC_RXCOL_TICKS, ec->rx_coalesce_usecs);
+        tw32(HOSTCC_TXCOL_TICKS, ec->tx_coalesce_usecs);
+        tw32(HOSTCC_RXMAX_FRAMES, ec->rx_max_coalesced_frames);
+        tw32(HOSTCC_TXMAX_FRAMES, ec->tx_max_coalesced_frames);
+        if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
+                tw32(HOSTCC_RXCOAL_TICK_INT, ec->rx_coalesce_usecs_irq);
+                tw32(HOSTCC_TXCOAL_TICK_INT, ec->tx_coalesce_usecs_irq);
+        }
+        tw32(HOSTCC_RXCOAL_MAXF_INT, ec->rx_max_coalesced_frames_irq);
+        tw32(HOSTCC_TXCOAL_MAXF_INT, ec->tx_max_coalesced_frames_irq);
+        if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
+                u32 val = ec->stats_block_coalesce_usecs;
+
+                if (!netif_carrier_ok(tp->dev))
+                        val = 0;
+
+                tw32(HOSTCC_STAT_COAL_TICKS, val);
+        }
+}
 
 /* tp->lock is held. */
 static int tg3_reset_hw(struct tg3 *tp)
@@ -5366,16 +5435,7 @@ static int tg3_reset_hw(struct tg3 *tp)
                 udelay(10);
         }
 
-        tw32(HOSTCC_RXCOL_TICKS, 0);
-        tw32(HOSTCC_TXCOL_TICKS, LOW_TXCOL_TICKS);
-        tw32(HOSTCC_RXMAX_FRAMES, 1);
-        tw32(HOSTCC_TXMAX_FRAMES, LOW_RXMAX_FRAMES);
-        if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
-                tw32(HOSTCC_RXCOAL_TICK_INT, 0);
-                tw32(HOSTCC_TXCOAL_TICK_INT, 0);
-        }
-        tw32(HOSTCC_RXCOAL_MAXF_INT, 1);
-        tw32(HOSTCC_TXCOAL_MAXF_INT, 0);
+        tg3_set_coalesce(tp, &tp->coal);
 
         /* set status block DMA address */
         tw32(HOSTCC_STATUS_BLK_HOST_ADDR + TG3_64BIT_REG_HIGH,
@@ -5388,8 +5448,6 @@ static int tg3_reset_hw(struct tg3 *tp)
                  * the tg3_periodic_fetch_stats call there, and
                  * tg3_get_stats to see how this works for 5705/5750 chips.
                  */
-                tw32(HOSTCC_STAT_COAL_TICKS,
-                     DEFAULT_STAT_COAL_TICKS);
                 tw32(HOSTCC_STATS_BLK_HOST_ADDR + TG3_64BIT_REG_HIGH,
                      ((u64) tp->stats_mapping >> 32));
                 tw32(HOSTCC_STATS_BLK_HOST_ADDR + TG3_64BIT_REG_LOW,
@@ -5445,7 +5503,8 @@ static int tg3_reset_hw(struct tg3 *tp)
         udelay(100);
 
         tw32_mailbox(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW, 0);
-        tr32(MAILBOX_INTERRUPT_0);
+        tr32(MAILBOX_INTERRUPT_0 + TG3_64BIT_REG_LOW);
+        tp->last_tag = 0;
 
         if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS)) {
                 tw32_f(DMAC_MODE, DMAC_MODE_ENABLE);
@@ -5723,31 +5782,33 @@ static void tg3_timer(unsigned long __opaque)
         spin_lock_irqsave(&tp->lock, flags);
         spin_lock(&tp->tx_lock);
 
-        /* All of this garbage is because when using non-tagged
-         * IRQ status the mailbox/status_block protocol the chip
-         * uses with the cpu is race prone.
-         */
-        if (tp->hw_status->status & SD_STATUS_UPDATED) {
-                tw32(GRC_LOCAL_CTRL,
-                     tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
-        } else {
-                tw32(HOSTCC_MODE, tp->coalesce_mode |
-                     (HOSTCC_MODE_ENABLE | HOSTCC_MODE_NOW));
-        }
+        if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)) {
+                /* All of this garbage is because when using non-tagged
+                 * IRQ status the mailbox/status_block protocol the chip
+                 * uses with the cpu is race prone.
+                 */
+                if (tp->hw_status->status & SD_STATUS_UPDATED) {
+                        tw32(GRC_LOCAL_CTRL,
+                             tp->grc_local_ctrl | GRC_LCLCTRL_SETINT);
+                } else {
+                        tw32(HOSTCC_MODE, tp->coalesce_mode |
+                             (HOSTCC_MODE_ENABLE | HOSTCC_MODE_NOW));
+                }
 
-        if (!(tr32(WDMAC_MODE) & WDMAC_MODE_ENABLE)) {
-                tp->tg3_flags2 |= TG3_FLG2_RESTART_TIMER;
-                spin_unlock(&tp->tx_lock);
-                spin_unlock_irqrestore(&tp->lock, flags);
-                schedule_work(&tp->reset_task);
-                return;
+                if (!(tr32(WDMAC_MODE) & WDMAC_MODE_ENABLE)) {
+                        tp->tg3_flags2 |= TG3_FLG2_RESTART_TIMER;
+                        spin_unlock(&tp->tx_lock);
+                        spin_unlock_irqrestore(&tp->lock, flags);
+                        schedule_work(&tp->reset_task);
+                        return;
+                }
         }
 
-        if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS)
-                tg3_periodic_fetch_stats(tp);
-
         /* This part only runs once per second. */
         if (!--tp->timer_counter) {
+                if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS)
+                        tg3_periodic_fetch_stats(tp);
+
                 if (tp->tg3_flags & TG3_FLAG_USE_LINKCHG_REG) {
                         u32 mac_stat;
                         int phy_event;
@@ -5846,9 +5907,13 @@ static int tg3_test_interrupt(struct tg3 *tp)
         if (tp->tg3_flags2 & TG3_FLG2_USING_MSI)
                 err = request_irq(tp->pdev->irq, tg3_msi,
                                   SA_SAMPLE_RANDOM, dev->name, dev);
-        else
-                err = request_irq(tp->pdev->irq, tg3_interrupt,
+        else {
+                irqreturn_t (*fn)(int, void *, struct pt_regs *)=tg3_interrupt;
+                if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)
+                        fn = tg3_interrupt_tagged;
+                err = request_irq(tp->pdev->irq, fn,
                                   SA_SHIRQ | SA_SAMPLE_RANDOM, dev->name, dev);
+        }
 
         if (err)
                 return err;
@@ -5900,9 +5965,14 @@ static int tg3_test_msi(struct tg3 *tp)
 
         tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
 
-        err = request_irq(tp->pdev->irq, tg3_interrupt,
-                          SA_SHIRQ | SA_SAMPLE_RANDOM, dev->name, dev);
+        {
+                irqreturn_t (*fn)(int, void *, struct pt_regs *)=tg3_interrupt;
+                if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)
+                        fn = tg3_interrupt_tagged;
 
+                err = request_irq(tp->pdev->irq, fn,
+                                  SA_SHIRQ | SA_SAMPLE_RANDOM, dev->name, dev);
+        }
         if (err)
                 return err;
 
@@ -5948,7 +6018,13 @@ static int tg3_open(struct net_device *dev)
         if ((tp->tg3_flags2 & TG3_FLG2_5750_PLUS) &&
             (GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5750_AX) &&
             (GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5750_BX)) {
-                if (pci_enable_msi(tp->pdev) == 0) {
+                /* All MSI supporting chips should support tagged
+                 * status.  Assert that this is the case.
+                 */
+                if (!(tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)) {
+                        printk(KERN_WARNING PFX "%s: MSI without TAGGED? "
+                               "Not using MSI.\n", tp->dev->name);
+                } else if (pci_enable_msi(tp->pdev) == 0) {
                         u32 msi_mode;
 
                         msi_mode = tr32(MSGINT_MODE);
@@ -5959,9 +6035,14 @@ static int tg3_open(struct net_device *dev)
         if (tp->tg3_flags2 & TG3_FLG2_USING_MSI)
                 err = request_irq(tp->pdev->irq, tg3_msi,
                                   SA_SAMPLE_RANDOM, dev->name, dev);
-        else
-                err = request_irq(tp->pdev->irq, tg3_interrupt,
+        else {
+                irqreturn_t (*fn)(int, void *, struct pt_regs *)=tg3_interrupt;
+                if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)
+                        fn = tg3_interrupt_tagged;
+
+                err = request_irq(tp->pdev->irq, fn,
                                   SA_SHIRQ | SA_SAMPLE_RANDOM, dev->name, dev);
+        }
 
         if (err) {
                 if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
@@ -5980,9 +6061,16 @@ static int tg3_open(struct net_device *dev)
                 tg3_halt(tp, 1);
                 tg3_free_rings(tp);
         } else {
-                tp->timer_offset = HZ / 10;
-                tp->timer_counter = tp->timer_multiplier = 10;
-                tp->asf_counter = tp->asf_multiplier = (10 * 120);
+                if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS)
+                        tp->timer_offset = HZ;
+                else
+                        tp->timer_offset = HZ / 10;
+
+                BUG_ON(tp->timer_offset > HZ);
+                tp->timer_counter = tp->timer_multiplier =
+                        (HZ / tp->timer_offset);
+                tp->asf_counter = tp->asf_multiplier =
+                        ((HZ / tp->timer_offset) * 120);
 
                 init_timer(&tp->timer);
                 tp->timer.expires = jiffies + tp->timer_offset;
@@ -6005,6 +6093,7 @@ static int tg3_open(struct net_device *dev)
 
         if (tp->tg3_flags2 & TG3_FLG2_USING_MSI) {
                 err = tg3_test_msi(tp);
+
                 if (err) {
                         spin_lock_irq(&tp->lock);
                         spin_lock(&tp->tx_lock);
@@ -7203,6 +7292,14 @@ static void tg3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
 }
 #endif
 
+static int tg3_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec)
+{
+        struct tg3 *tp = netdev_priv(dev);
+
+        memcpy(ec, &tp->coal, sizeof(*ec));
+        return 0;
+}
+
 static struct ethtool_ops tg3_ethtool_ops = {
         .get_settings           = tg3_get_settings,
         .set_settings           = tg3_set_settings,
@@ -7235,6 +7332,7 @@ static struct ethtool_ops tg3_ethtool_ops = {
         .get_strings            = tg3_get_strings,
         .get_stats_count        = tg3_get_stats_count,
         .get_ethtool_stats      = tg3_get_ethtool_stats,
+        .get_coalesce           = tg3_get_coalesce,
 };
 
 static void __devinit tg3_get_eeprom_size(struct tg3 *tp)
@@ -8422,15 +8520,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
         if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS)
                 tp->tg3_flags2 |= TG3_FLG2_PHY_BER_BUG;
 
-        /* Only 5701 and later support tagged irq status mode.
-         * Also, 5788 chips cannot use tagged irq status.
-         *
-         * However, since we are using NAPI avoid tagged irq status
-         * because the interrupt condition is more difficult to
-         * fully clear in that mode.
-         */
         tp->coalesce_mode = 0;
-
         if (GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5700_AX &&
             GET_CHIP_REV(tp->pci_chip_rev_id) != CHIPREV_5700_BX)
                 tp->coalesce_mode |= HOSTCC_MODE_32BYTE;
@@ -8494,6 +8584,18 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
              grc_misc_cfg == GRC_MISC_CFG_BOARD_ID_5788M))
                 tp->tg3_flags2 |= TG3_FLG2_IS_5788;
 
+        if (!(tp->tg3_flags2 & TG3_FLG2_IS_5788) &&
+            (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700))
+                tp->tg3_flags |= TG3_FLAG_TAGGED_STATUS;
+        if (tp->tg3_flags & TG3_FLAG_TAGGED_STATUS) {
+                tp->coalesce_mode |= (HOSTCC_MODE_CLRTICK_RXBD |
+                                      HOSTCC_MODE_CLRTICK_TXBD);
+
+                tp->misc_host_ctrl |= MISC_HOST_CTRL_TAGGED_STATUS;
+                pci_write_config_dword(tp->pdev, TG3PCI_MISC_HOST_CTRL,
+                                       tp->misc_host_ctrl);
+        }
+
         /* these are limited to 10/100 only */
         if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703 &&
              (grc_misc_cfg == 0x8000 || grc_misc_cfg == 0x4000)) ||
@@ -8671,6 +8773,146 @@ static int __devinit tg3_get_device_address(struct tg3 *tp)
         return 0;
 }
 
+#define BOUNDARY_SINGLE_CACHELINE       1
+#define BOUNDARY_MULTI_CACHELINE        2
+
+static u32 __devinit tg3_calc_dma_bndry(struct tg3 *tp, u32 val)
+{
+        int cacheline_size;
+        u8 byte;
+        int goal;
+
+        pci_read_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE, &byte);
+        if (byte == 0)
+                cacheline_size = 1024;
+        else
+                cacheline_size = (int) byte * 4;
+
+        /* On 5703 and later chips, the boundary bits have no
+         * effect.
+         */
+        if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5700 &&
+            GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701 &&
+            !(tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS))
+                goto out;
+
+#if defined(CONFIG_PPC64) || defined(CONFIG_IA64) || defined(CONFIG_PARISC)
+        goal = BOUNDARY_MULTI_CACHELINE;
+#else
+#if defined(CONFIG_SPARC64) || defined(CONFIG_ALPHA)
+        goal = BOUNDARY_SINGLE_CACHELINE;
+#else
+        goal = 0;
+#endif
+#endif
+
+        if (!goal)
+                goto out;
+
+        /* PCI controllers on most RISC systems tend to disconnect
+         * when a device tries to burst across a cache-line boundary.
+         * Therefore, letting tg3 do so just wastes PCI bandwidth.
+         *
+         * Unfortunately, for PCI-E there are only limited
+         * write-side controls for this, and thus for reads
+         * we will still get the disconnects.  We'll also waste
+         * these PCI cycles for both read and write for chips
+         * other than 5700 and 5701 which do not implement the
+         * boundary bits.
+         */
+        if ((tp->tg3_flags & TG3_FLAG_PCIX_MODE) &&
+            !(tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS)) {
+                switch (cacheline_size) {
+                case 16:
+                case 32:
+                case 64:
+                case 128:
+                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
+                                val |= (DMA_RWCTRL_READ_BNDRY_128_PCIX |
+                                        DMA_RWCTRL_WRITE_BNDRY_128_PCIX);
+                        } else {
+                                val |= (DMA_RWCTRL_READ_BNDRY_384_PCIX |
+                                        DMA_RWCTRL_WRITE_BNDRY_384_PCIX);
+                        }
+                        break;
+
+                case 256:
+                        val |= (DMA_RWCTRL_READ_BNDRY_256_PCIX |
+                                DMA_RWCTRL_WRITE_BNDRY_256_PCIX);
+                        break;
+
+                default:
+                        val |= (DMA_RWCTRL_READ_BNDRY_384_PCIX |
+                                DMA_RWCTRL_WRITE_BNDRY_384_PCIX);
+                        break;
+                };
+        } else if (tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) {
+                switch (cacheline_size) {
+                case 16:
+                case 32:
+                case 64:
+                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
+                                val &= ~DMA_RWCTRL_WRITE_BNDRY_DISAB_PCIE;
+                                val |= DMA_RWCTRL_WRITE_BNDRY_64_PCIE;
+                                break;
+                        }
+                        /* fallthrough */
+                case 128:
+                default:
+                        val &= ~DMA_RWCTRL_WRITE_BNDRY_DISAB_PCIE;
+                        val |= DMA_RWCTRL_WRITE_BNDRY_128_PCIE;
+                        break;
+                };
+        } else {
+                switch (cacheline_size) {
+                case 16:
+                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
+                                val |= (DMA_RWCTRL_READ_BNDRY_16 |
+                                        DMA_RWCTRL_WRITE_BNDRY_16);
+                                break;
+                        }
+                        /* fallthrough */
+                case 32:
+                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
+                                val |= (DMA_RWCTRL_READ_BNDRY_32 |
+                                        DMA_RWCTRL_WRITE_BNDRY_32);
+                                break;
+                        }
+                        /* fallthrough */
+                case 64:
+                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
+                                val |= (DMA_RWCTRL_READ_BNDRY_64 |
+                                        DMA_RWCTRL_WRITE_BNDRY_64);
+                                break;
+                        }
+                        /* fallthrough */
+                case 128:
+                        if (goal == BOUNDARY_SINGLE_CACHELINE) {
+                                val |= (DMA_RWCTRL_READ_BNDRY_128 |
+                                        DMA_RWCTRL_WRITE_BNDRY_128);
+                                break;
+                        }
+                        /* fallthrough */
+                case 256:
+                        val |= (DMA_RWCTRL_READ_BNDRY_256 |
+                                DMA_RWCTRL_WRITE_BNDRY_256);
+                        break;
+                case 512:
+                        val |= (DMA_RWCTRL_READ_BNDRY_512 |
+                                DMA_RWCTRL_WRITE_BNDRY_512);
+                        break;
+                case 1024:
+                default:
+                        val |= (DMA_RWCTRL_READ_BNDRY_1024 |
+                                DMA_RWCTRL_WRITE_BNDRY_1024);
+                        break;
+                };
+        }
+
+out:
+        return val;
+}
+
 static int __devinit tg3_do_test_dma(struct tg3 *tp, u32 *buf, dma_addr_t buf_dma, int size, int to_device)
 {
         struct tg3_internal_buffer_desc test_desc;
@@ -8757,7 +8999,7 @@ static int __devinit tg3_do_test_dma(struct tg3 *tp, u32 *buf, dma_addr_t buf_dm
 static int __devinit tg3_test_dma(struct tg3 *tp)
 {
         dma_addr_t buf_dma;
-        u32 *buf;
+        u32 *buf, saved_dma_rwctrl;
         int ret;
 
         buf = pci_alloc_consistent(tp->pdev, TEST_BUFFER_SIZE, &buf_dma);
@@ -8769,46 +9011,7 @@ static int __devinit tg3_test_dma(struct tg3 *tp)
         tp->dma_rwctrl = ((0x7 << DMA_RWCTRL_PCI_WRITE_CMD_SHIFT) |
                           (0x6 << DMA_RWCTRL_PCI_READ_CMD_SHIFT));
 
-#ifndef CONFIG_X86
-        {
-                u8 byte;
-                int cacheline_size;
-                pci_read_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE, &byte);
-
-                if (byte == 0)
-                        cacheline_size = 1024;
-                else
-                        cacheline_size = (int) byte * 4;
-
-                switch (cacheline_size) {
-                case 16:
-                case 32:
-                case 64:
-                case 128:
-                        if ((tp->tg3_flags & TG3_FLAG_PCIX_MODE) &&
-                            !(tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS)) {
-                                tp->dma_rwctrl |=
-                                        DMA_RWCTRL_WRITE_BNDRY_384_PCIX;
-                                break;
-                        } else if (tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) {
-                                tp->dma_rwctrl &=
-                                        ~(DMA_RWCTRL_PCI_WRITE_CMD);
-                                tp->dma_rwctrl |=
-                                        DMA_RWCTRL_WRITE_BNDRY_128_PCIE;
-                                break;
-                        }
-                        /* fallthrough */
-                case 256:
-                        if (!(tp->tg3_flags & TG3_FLAG_PCIX_MODE) &&
-                            !(tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS))
-                                tp->dma_rwctrl |=
-                                        DMA_RWCTRL_WRITE_BNDRY_256;
-                        else if (!(tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS))
-                                tp->dma_rwctrl |=
-                                        DMA_RWCTRL_WRITE_BNDRY_256_PCIX;
-                };
-        }
-#endif
+        tp->dma_rwctrl = tg3_calc_dma_bndry(tp, tp->dma_rwctrl);
 
         if (tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) {
                 /* DMA read watermark not used on PCIE */
@@ -8827,7 +9030,7 @@ static int __devinit tg3_test_dma(struct tg3 *tp)
                         if (ccval == 0x6 || ccval == 0x7)
                                 tp->dma_rwctrl |= DMA_RWCTRL_ONE_DMA;
 
-                        /* Set bit 23 to renable PCIX hw bug fix */
+                        /* Set bit 23 to enable PCIX hw bug fix */
                         tp->dma_rwctrl |= 0x009f0000;
                 } else {
                         tp->dma_rwctrl |= 0x001b000f;
@@ -8868,6 +9071,13 @@ static int __devinit tg3_test_dma(struct tg3 *tp)
             GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5701)
                 goto out;
 
+        /* It is best to perform DMA test with maximum write burst size
+         * to expose the 5700/5701 write DMA bug.
+         */
+        saved_dma_rwctrl = tp->dma_rwctrl;
+        tp->dma_rwctrl &= ~DMA_RWCTRL_WRITE_BNDRY_MASK;
+        tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
+
         while (1) {
                 u32 *p = buf, i;
 
@@ -8906,8 +9116,9 @@ static int __devinit tg3_test_dma(struct tg3 *tp)
                         if (p[i] == i)
                                 continue;
 
-                        if ((tp->dma_rwctrl & DMA_RWCTRL_WRITE_BNDRY_MASK) ==
-                            DMA_RWCTRL_WRITE_BNDRY_DISAB) {
+                        if ((tp->dma_rwctrl & DMA_RWCTRL_WRITE_BNDRY_MASK) !=
+                            DMA_RWCTRL_WRITE_BNDRY_16) {
+                                tp->dma_rwctrl &= ~DMA_RWCTRL_WRITE_BNDRY_MASK;
                                 tp->dma_rwctrl |= DMA_RWCTRL_WRITE_BNDRY_16;
                                 tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
                                 break;
@@ -8924,6 +9135,14 @@ static int __devinit tg3_test_dma(struct tg3 *tp)
                         break;
                 }
         }
+        if ((tp->dma_rwctrl & DMA_RWCTRL_WRITE_BNDRY_MASK) !=
+            DMA_RWCTRL_WRITE_BNDRY_16) {
+                /* DMA test passed without adjusting DMA boundary,
+                 * just restore the calculated DMA boundary
+                 */
+                tp->dma_rwctrl = saved_dma_rwctrl;
+                tw32(TG3PCI_DMA_RW_CTRL, tp->dma_rwctrl);
+        }
 
 out:
         pci_free_consistent(tp->pdev, TEST_BUFFER_SIZE, buf, buf_dma);
@@ -9011,6 +9230,31 @@ static struct pci_dev * __devinit tg3_find_5704_peer(struct tg3 *tp)
         return peer;
 }
 
+static void __devinit tg3_init_coal(struct tg3 *tp)
+{
+        struct ethtool_coalesce *ec = &tp->coal;
+
+        memset(ec, 0, sizeof(*ec));
+        ec->cmd = ETHTOOL_GCOALESCE;
+        ec->rx_coalesce_usecs = LOW_RXCOL_TICKS;
+        ec->tx_coalesce_usecs = LOW_TXCOL_TICKS;
+        ec->rx_max_coalesced_frames = LOW_RXMAX_FRAMES;
+        ec->tx_max_coalesced_frames = LOW_TXMAX_FRAMES;
+        ec->rx_coalesce_usecs_irq = DEFAULT_RXCOAL_TICK_INT;
+        ec->tx_coalesce_usecs_irq = DEFAULT_TXCOAL_TICK_INT;
+        ec->rx_max_coalesced_frames_irq = DEFAULT_RXCOAL_MAXF_INT;
+        ec->tx_max_coalesced_frames_irq = DEFAULT_TXCOAL_MAXF_INT;
+        ec->stats_block_coalesce_usecs = DEFAULT_STAT_COAL_TICKS;
+
+        if (tp->coalesce_mode & (HOSTCC_MODE_CLRTICK_RXBD |
+                                 HOSTCC_MODE_CLRTICK_TXBD)) {
+                ec->rx_coalesce_usecs = LOW_RXCOL_TICKS_CLRTCKS;
+                ec->rx_coalesce_usecs_irq = DEFAULT_RXCOAL_TICK_INT_CLRTCKS;
+                ec->tx_coalesce_usecs = LOW_TXCOL_TICKS_CLRTCKS;
+                ec->tx_coalesce_usecs_irq = DEFAULT_TXCOAL_TICK_INT_CLRTCKS;
+        }
+}
+
 static int __devinit tg3_init_one(struct pci_dev *pdev,
                                   const struct pci_device_id *ent)
 {
@@ -9256,6 +9500,8 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
         /* flow control autonegotiation is default behavior */
         tp->tg3_flags |= TG3_FLAG_PAUSE_AUTONEG;
 
+        tg3_init_coal(tp);
+
         err = register_netdev(dev);
         if (err) {
                 printk(KERN_ERR PFX "Cannot register net device, "
@@ -9298,6 +9544,8 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
                (tp->tg3_flags & TG3_FLAG_SPLIT_MODE) != 0,
                (tp->tg3_flags2 & TG3_FLG2_NO_ETH_WIRE_SPEED) == 0,
                (tp->tg3_flags2 & TG3_FLG2_TSO_CAPABLE) != 0);
+        printk(KERN_INFO "%s: dma_rwctrl[%08x]\n",
+               dev->name, tp->dma_rwctrl);
 
         return 0;
 
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 8de6f21037ba..993f84c93dc4 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -876,10 +876,12 @@
 #define  HOSTCC_STATUS_ERROR_ATTN        0x00000004
 #define HOSTCC_RXCOL_TICKS              0x00003c08
 #define  LOW_RXCOL_TICKS                 0x00000032
+#define  LOW_RXCOL_TICKS_CLRTCKS         0x00000014
 #define  DEFAULT_RXCOL_TICKS             0x00000048
 #define  HIGH_RXCOL_TICKS                0x00000096
 #define HOSTCC_TXCOL_TICKS              0x00003c0c
 #define  LOW_TXCOL_TICKS                 0x00000096
+#define  LOW_TXCOL_TICKS_CLRTCKS         0x00000048
 #define  DEFAULT_TXCOL_TICKS             0x0000012c
 #define  HIGH_TXCOL_TICKS                0x00000145
 #define HOSTCC_RXMAX_FRAMES             0x00003c10
@@ -892,8 +894,10 @@
 #define  HIGH_TXMAX_FRAMES               0x00000052
 #define HOSTCC_RXCOAL_TICK_INT          0x00003c18
 #define  DEFAULT_RXCOAL_TICK_INT         0x00000019
+#define  DEFAULT_RXCOAL_TICK_INT_CLRTCKS 0x00000014
 #define HOSTCC_TXCOAL_TICK_INT          0x00003c1c
 #define  DEFAULT_TXCOAL_TICK_INT         0x00000019
+#define  DEFAULT_TXCOAL_TICK_INT_CLRTCKS 0x00000014
 #define HOSTCC_RXCOAL_MAXF_INT          0x00003c20
 #define  DEFAULT_RXCOAL_MAXF_INT         0x00000005
 #define HOSTCC_TXCOAL_MAXF_INT          0x00003c24
@@ -2023,6 +2027,7 @@ struct tg3 {
 
         struct tg3_hw_status            *hw_status;
         dma_addr_t                      status_mapping;
+        u32                             last_tag;
 
         u32                             msg_enable;
 
@@ -2068,6 +2073,7 @@ struct tg3 {
 
         u32                             rx_offset;
         u32                             tg3_flags;
+#define TG3_FLAG_TAGGED_STATUS          0x00000001
 #define TG3_FLAG_TXD_MBOX_HWBUG         0x00000002
 #define TG3_FLAG_RX_CHECKSUMS           0x00000004
 #define TG3_FLAG_USE_LINKCHG_REG        0x00000008
@@ -2225,7 +2231,7 @@ struct tg3 {
 
 #define SST_25VF0X0_PAGE_SIZE           4098
 
-
+        struct ethtool_coalesce         coal;
 };
 
 #endif /* !(_T3_H) */
diff --git a/drivers/sbus/char/aurora.c b/drivers/sbus/char/aurora.c
index e5fa1703856b..650d5e924f47 100644
--- a/drivers/sbus/char/aurora.c
+++ b/drivers/sbus/char/aurora.c
@@ -81,10 +81,6 @@ unsigned char irqs[4] = {
 int irqhit=0;
 #endif
 
-#ifndef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
-
 static struct tty_driver *aurora_driver;
 static struct Aurora_board aurora_board[AURORA_NBOARD] = {
         {0,},
@@ -594,7 +590,7 @@ static void aurora_transmit(struct Aurora_board const * bp, int chip)
                                             &bp->r[chip]->r[CD180_TDR]);
                                 port->COR2 &= ~COR2_ETC;
                         }
-                        count = MIN(port->break_length, 0xff);
+                        count = min(port->break_length, 0xff);
                         sbus_writeb(CD180_C_ESC,
                                     &bp->r[chip]->r[CD180_TDR]);
                         sbus_writeb(CD180_C_DELAY,
@@ -1575,7 +1571,7 @@ static int aurora_write(struct tty_struct * tty,
         save_flags(flags);
         while (1) {
                 cli();
-                c = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
+                c = min(count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
                                    SERIAL_XMIT_SIZE - port->xmit_head));
                 if (c <= 0) {
                         restore_flags(flags);
diff --git a/drivers/scsi/aic7xxx/aic7770_osm.c b/drivers/scsi/aic7xxx/aic7770_osm.c
index c2b47f2bdffd..682ca0b32b44 100644
--- a/drivers/scsi/aic7xxx/aic7770_osm.c
+++ b/drivers/scsi/aic7xxx/aic7770_osm.c
@@ -41,7 +41,6 @@
 
 #include "aic7xxx_osm.h"
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
 #include <linux/device.h>
 #include <linux/eisa.h>
 
@@ -62,13 +61,6 @@ static struct eisa_driver aic7770_driver = {
 };
 
 typedef  struct device *aic7770_dev_t;
-#else
-#define MINSLOT                 1
-#define NUMSLOTS                16
-#define IDOFFSET                0x80
-
-typedef void *aic7770_dev_t;
-#endif
 
 static int aic7770_linux_config(struct aic7770_identity *entry,
                                 aic7770_dev_t dev, u_int eisaBase);
@@ -76,7 +68,6 @@ static int aic7770_linux_config(struct aic7770_identity *entry,
 int
 ahc_linux_eisa_init(void)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
         struct eisa_device_id *eid;
         struct aic7770_identity *id;
         int i;
@@ -110,44 +101,6 @@ ahc_linux_eisa_init(void)
         eid->sig[0] = 0;
 
         return eisa_driver_register(&aic7770_driver);
-#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
-        struct aic7770_identity *entry;
-        u_int  slot;
-        u_int  eisaBase;
-        u_int  i;
-        int ret = -ENODEV;
-
-        if (aic7xxx_probe_eisa_vl == 0)
-                return ret;
-
-        eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
-        for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
-                uint32_t eisa_id;
-                size_t   id_size;
-
-                if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
-                        continue;
-
-                eisa_id = 0;
-                id_size = sizeof(eisa_id);
-                for (i = 0; i < 4; i++) {
-                        /* VLcards require priming*/
-                        outb(0x80 + i, eisaBase + IDOFFSET);
-                        eisa_id |= inb(eisaBase + IDOFFSET + i)
-                                   << ((id_size-i-1) * 8);
-                }
-                release_region(eisaBase, AHC_EISA_IOSIZE);
-                if (eisa_id & 0x80000000)
-                        continue;  /* no EISA card in slot */
-
-                entry = aic7770_find_device(eisa_id);
-                if (entry != NULL) {
-                        aic7770_linux_config(entry, NULL, eisaBase);
-                        ret = 0;
-                }
-        }
-        return ret;
-#endif
 }
 
 void
@@ -187,11 +140,10 @@ aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
                 ahc_free(ahc);
                 return (error);
         }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
+
         dev->driver_data = (void *)ahc;
         if (aic7xxx_detect_complete)
                 error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
-#endif
         return (error);
 }
 
@@ -225,7 +177,6 @@ aic7770_map_int(struct ahc_softc *ahc, u_int irq)
         return (-error);
 }
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
 static int
 aic7770_eisa_dev_probe(struct device *dev)
 {
@@ -261,4 +212,3 @@ aic7770_eisa_dev_remove(struct device *dev)
 
         return (0);
 }
-#endif
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index d978e4a3e973..f90efa265ba2 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -134,11 +134,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
 #include "aiclib.c"
 
 #include <linux/init.h>         /* __setup */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-#include "sd.h"                 /* For geometry detection */
-#endif
-
 #include <linux/mm.h>           /* For fetching system memory size */
 #include <linux/blkdev.h>               /* For block_size() */
 #include <linux/delay.h>        /* For ssleep/msleep */
@@ -148,11 +143,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
  */
 spinlock_t ahc_list_spinlock;
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/* For dynamic sglist size calculation. */
-u_int ahc_linux_nseg;
-#endif
-
 /*
  * Set this to the delay in seconds after SCSI bus reset.
  * Note, we honor this only for the initial bus reset.
@@ -436,15 +426,12 @@ static void ahc_linux_handle_scsi_status(struct ahc_softc *,
                                          struct ahc_linux_device *,
                                          struct scb *);
 static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc,
-                                         Scsi_Cmnd *cmd);
+                                         struct scsi_cmnd *cmd);
 static void ahc_linux_sem_timeout(u_long arg);
 static void ahc_linux_freeze_simq(struct ahc_softc *ahc);
 static void ahc_linux_release_simq(u_long arg);
-static void ahc_linux_dev_timed_unfreeze(u_long arg);
-static int  ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag);
+static int  ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
 static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc);
-static void ahc_linux_size_nseg(void);
-static void ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc);
 static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc,
                                      struct ahc_devinfo *devinfo);
 static void ahc_linux_device_queue_depth(struct ahc_softc *ahc,
@@ -458,54 +445,27 @@ static struct ahc_linux_device*	ahc_linux_alloc_device(struct ahc_softc*,
                                                        u_int);
 static void                     ahc_linux_free_device(struct ahc_softc*,
                                                       struct ahc_linux_device*);
-static void ahc_linux_run_device_queue(struct ahc_softc*,
-                                       struct ahc_linux_device*);
+static int ahc_linux_run_command(struct ahc_softc*,
+                                 struct ahc_linux_device *,
+                                 struct scsi_cmnd *);
 static void ahc_linux_setup_tag_info_global(char *p);
 static aic_option_callback_t ahc_linux_setup_tag_info;
 static int  aic7xxx_setup(char *s);
 static int  ahc_linux_next_unit(void);
-static void ahc_runq_tasklet(unsigned long data);
-static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc);
 
 /********************************* Inlines ************************************/
-static __inline void ahc_schedule_runq(struct ahc_softc *ahc);
 static __inline struct ahc_linux_device*
                      ahc_linux_get_device(struct ahc_softc *ahc, u_int channel,
-                                          u_int target, u_int lun, int alloc);
-static __inline void ahc_schedule_completeq(struct ahc_softc *ahc);
-static __inline void ahc_linux_check_device_queue(struct ahc_softc *ahc,
-                                                  struct ahc_linux_device *dev);
-static __inline struct ahc_linux_device *
-                     ahc_linux_next_device_to_run(struct ahc_softc *ahc);
-static __inline void ahc_linux_run_device_queues(struct ahc_softc *ahc);
+                                          u_int target, u_int lun);
 static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*);
 
 static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
                                       struct ahc_dma_seg *sg,
                                       dma_addr_t addr, bus_size_t len);
 
-static __inline void
-ahc_schedule_completeq(struct ahc_softc *ahc)
-{
-        if ((ahc->platform_data->flags & AHC_RUN_CMPLT_Q_TIMER) == 0) {
-                ahc->platform_data->flags |= AHC_RUN_CMPLT_Q_TIMER;
-                ahc->platform_data->completeq_timer.expires = jiffies;
-                add_timer(&ahc->platform_data->completeq_timer);
-        }
-}
-
-/*
- * Must be called with our lock held.
- */
-static __inline void
-ahc_schedule_runq(struct ahc_softc *ahc)
-{
-        tasklet_schedule(&ahc->platform_data->runq_tasklet);
-}
-
 static __inline struct ahc_linux_device*
 ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
-                     u_int lun, int alloc)
+                     u_int lun)
 {
         struct ahc_linux_target *targ;
         struct ahc_linux_device *dev;
@@ -515,102 +475,15 @@ ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
         if (channel != 0)
                 target_offset += 8;
         targ = ahc->platform_data->targets[target_offset];
-        if (targ == NULL) {
-                if (alloc != 0) {
-                        targ = ahc_linux_alloc_target(ahc, channel, target);
-                        if (targ == NULL)
-                                return (NULL);
-                } else
-                        return (NULL);
-        }
+        BUG_ON(targ == NULL);
         dev = targ->devices[lun];
-        if (dev == NULL && alloc != 0)
-                dev = ahc_linux_alloc_device(ahc, targ, lun);
-        return (dev);
-}
-
-#define AHC_LINUX_MAX_RETURNED_ERRORS 4
-static struct ahc_cmd *
-ahc_linux_run_complete_queue(struct ahc_softc *ahc)
-{
-        struct  ahc_cmd *acmd;
-        u_long  done_flags;
-        int     with_errors;
-
-        with_errors = 0;
-        ahc_done_lock(ahc, &done_flags);
-        while ((acmd = TAILQ_FIRST(&ahc->platform_data->completeq)) != NULL) {
-                Scsi_Cmnd *cmd;
-
-                if (with_errors > AHC_LINUX_MAX_RETURNED_ERRORS) {
-                        /*
-                         * Linux uses stack recursion to requeue
-                         * commands that need to be retried.  Avoid
-                         * blowing out the stack by "spoon feeding"
-                         * commands that completed with error back
-                         * the operating system in case they are going
-                         * to be retried. "ick"
-                         */
-                        ahc_schedule_completeq(ahc);
-                        break;
-                }
-                TAILQ_REMOVE(&ahc->platform_data->completeq,
-                             acmd, acmd_links.tqe);
-                cmd = &acmd_scsi_cmd(acmd);
-                cmd->host_scribble = NULL;
-                if (ahc_cmd_get_transaction_status(cmd) != DID_OK
-                 || (cmd->result & 0xFF) != SCSI_STATUS_OK)
-                        with_errors++;
-
-                cmd->scsi_done(cmd);
-        }
-        ahc_done_unlock(ahc, &done_flags);
-        return (acmd);
-}
-
-static __inline void
-ahc_linux_check_device_queue(struct ahc_softc *ahc,
-                             struct ahc_linux_device *dev)
-{
-        if ((dev->flags & AHC_DEV_FREEZE_TIL_EMPTY) != 0
-         && dev->active == 0) {
-                dev->flags &= ~AHC_DEV_FREEZE_TIL_EMPTY;
-                dev->qfrozen--;
-        }
-
-        if (TAILQ_FIRST(&dev->busyq) == NULL
-         || dev->openings == 0 || dev->qfrozen != 0)
-                return;
-
-        ahc_linux_run_device_queue(ahc, dev);
-}
-
-static __inline struct ahc_linux_device *
-ahc_linux_next_device_to_run(struct ahc_softc *ahc)
-{
-        
-        if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0
-            || (ahc->platform_data->qfrozen != 0))
-                return (NULL);
-        return (TAILQ_FIRST(&ahc->platform_data->device_runq));
-}
-
-static __inline void
-ahc_linux_run_device_queues(struct ahc_softc *ahc)
-{
-        struct ahc_linux_device *dev;
-
-        while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
-                TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
-                dev->flags &= ~AHC_DEV_ON_RUN_LIST;
-                ahc_linux_check_device_queue(ahc, dev);
-        }
+        return dev;
 }
 
 static __inline void
 ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb)
 {
-        Scsi_Cmnd *cmd;
+        struct scsi_cmnd *cmd;
 
         cmd = scb->io_ctx;
         ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE);
@@ -650,109 +523,15 @@ ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
         return (consumed);
 }
 
-/************************  Host template entry points *************************/
-static int         ahc_linux_detect(Scsi_Host_Template *);
-static int         ahc_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
-static const char *ahc_linux_info(struct Scsi_Host *);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-static int         ahc_linux_slave_alloc(Scsi_Device *);
-static int         ahc_linux_slave_configure(Scsi_Device *);
-static void        ahc_linux_slave_destroy(Scsi_Device *);
-#if defined(__i386__)
-static int         ahc_linux_biosparam(struct scsi_device*,
-                                       struct block_device*,
-                                       sector_t, int[]);
-#endif
-#else
-static int         ahc_linux_release(struct Scsi_Host *);
-static void        ahc_linux_select_queue_depth(struct Scsi_Host *host,
-                                                Scsi_Device *scsi_devs);
-#if defined(__i386__)
-static int         ahc_linux_biosparam(Disk *, kdev_t, int[]);
-#endif
-#endif
-static int         ahc_linux_bus_reset(Scsi_Cmnd *);
-static int         ahc_linux_dev_reset(Scsi_Cmnd *);
-static int         ahc_linux_abort(Scsi_Cmnd *);
-
-/*
- * Calculate a safe value for AHC_NSEG (as expressed through ahc_linux_nseg).
- *
- * In pre-2.5.X...
- * The midlayer allocates an S/G array dynamically when a command is issued
- * using SCSI malloc.  This array, which is in an OS dependent format that
- * must later be copied to our private S/G list, is sized to house just the
- * number of segments needed for the current transfer.  Since the code that
- * sizes the SCSI malloc pool does not take into consideration fragmentation
- * of the pool, executing transactions numbering just a fraction of our
- * concurrent transaction limit with list lengths aproaching AHC_NSEG will
- * quickly depleat the SCSI malloc pool of usable space.  Unfortunately, the
- * mid-layer does not properly handle this scsi malloc failures for the S/G
- * array and the result can be a lockup of the I/O subsystem.  We try to size
- * our S/G list so that it satisfies our drivers allocation requirements in
- * addition to avoiding fragmentation of the SCSI malloc pool.
- */
-static void
-ahc_linux_size_nseg(void)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-        u_int cur_size;
-        u_int best_size;
-
-        /*
-         * The SCSI allocator rounds to the nearest 512 bytes
-         * an cannot allocate across a page boundary.  Our algorithm
-         * is to start at 1K of scsi malloc space per-command and
-         * loop through all factors of the PAGE_SIZE and pick the best.
-         */
-        best_size = 0;
-        for (cur_size = 1024; cur_size <= PAGE_SIZE; cur_size *= 2) {
-                u_int nseg;
-
-                nseg = cur_size / sizeof(struct scatterlist);
-                if (nseg < AHC_LINUX_MIN_NSEG)
-                        continue;
-
-                if (best_size == 0) {
-                        best_size = cur_size;
-                        ahc_linux_nseg = nseg;
-                } else {
-                        u_int best_rem;
-                        u_int cur_rem;
-
-                        /*
-                         * Compare the traits of the current "best_size"
-                         * with the current size to determine if the
-                         * current size is a better size.
-                         */
-                        best_rem = best_size % sizeof(struct scatterlist);
-                        cur_rem = cur_size % sizeof(struct scatterlist);
-                        if (cur_rem < best_rem) {
-                                best_size = cur_size;
-                                ahc_linux_nseg = nseg;
-                        }
-                }
-        }
-#endif
-}
-
 /*
  * Try to detect an Adaptec 7XXX controller.
  */
 static int
-ahc_linux_detect(Scsi_Host_Template *template)
+ahc_linux_detect(struct scsi_host_template *template)
 {
         struct  ahc_softc *ahc;
         int     found = 0;
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-        /*
-         * It is a bug that the upper layer takes
-         * this lock just prior to calling us.
-         */
-        spin_unlock_irq(&io_request_lock);
-#endif
-
         /*
          * Sanity checking of Linux SCSI data structures so
          * that some of our hacks^H^H^H^H^Hassumptions aren't
@@ -764,7 +543,6 @@ ahc_linux_detect(Scsi_Host_Template *template)
                 printf("ahc_linux_detect: Unable to attach\n");
                 return (0);
         }
-        ahc_linux_size_nseg();
         /*
          * If we've been passed any parameters, process them now.
          */
@@ -793,48 +571,11 @@ ahc_linux_detect(Scsi_Host_Template *template)
                         found++;
         }
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-        spin_lock_irq(&io_request_lock);
-#endif
         aic7xxx_detect_complete++;
 
         return (found);
 }
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/*
- * Free the passed in Scsi_Host memory structures prior to unloading the
- * module.
- */
-int
-ahc_linux_release(struct Scsi_Host * host)
-{
-        struct ahc_softc *ahc;
-        u_long l;
-
-        ahc_list_lock(&l);
-        if (host != NULL) {
-
-                /*
-                 * We should be able to just perform
-                 * the free directly, but check our
-                 * list for extra sanity.
-                 */
-                ahc = ahc_find_softc(*(struct ahc_softc **)host->hostdata);
-                if (ahc != NULL) {
-                        u_long s;
-
-                        ahc_lock(ahc, &s);
-                        ahc_intr_enable(ahc, FALSE);
-                        ahc_unlock(ahc, &s);
-                        ahc_free(ahc);
-                }
-        }
-        ahc_list_unlock(&l);
-        return (0);
-}
-#endif
-
 /*
  * Return a string describing the driver.
  */
@@ -867,11 +608,10 @@ ahc_linux_info(struct Scsi_Host *host)
  * Queue an SCB to the controller.
  */
 static int
-ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
+ahc_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
 {
         struct   ahc_softc *ahc;
         struct   ahc_linux_device *dev;
-        u_long   flags;
 
         ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
 
@@ -880,205 +620,149 @@ ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
          */
         cmd->scsi_done = scsi_done;
 
-        ahc_midlayer_entrypoint_lock(ahc, &flags);
-
         /*
          * Close the race of a command that was in the process of
          * being queued to us just as our simq was frozen.  Let
          * DV commands through so long as we are only frozen to
          * perform DV.
          */
-        if (ahc->platform_data->qfrozen != 0) {
+        if (ahc->platform_data->qfrozen != 0)
+                return SCSI_MLQUEUE_HOST_BUSY;
 
-                ahc_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
-                ahc_linux_queue_cmd_complete(ahc, cmd);
-                ahc_schedule_completeq(ahc);
-                ahc_midlayer_entrypoint_unlock(ahc, &flags);
-                return (0);
-        }
         dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
-                                   cmd->device->lun, /*alloc*/TRUE);
-        if (dev == NULL) {
-                ahc_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL);
-                ahc_linux_queue_cmd_complete(ahc, cmd);
-                ahc_schedule_completeq(ahc);
-                ahc_midlayer_entrypoint_unlock(ahc, &flags);
-                printf("%s: aic7xxx_linux_queue - Unable to allocate device!\n",
-                       ahc_name(ahc));
-                return (0);
-        }
+                                   cmd->device->lun);
+        BUG_ON(dev == NULL);
+
         cmd->result = CAM_REQ_INPROG << 16;
-        TAILQ_INSERT_TAIL(&dev->busyq, (struct ahc_cmd *)cmd, acmd_links.tqe);
-        if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
-                TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
-                dev->flags |= AHC_DEV_ON_RUN_LIST;
-                ahc_linux_run_device_queues(ahc);
-        }
-        ahc_midlayer_entrypoint_unlock(ahc, &flags);
-        return (0);
+
+        return ahc_linux_run_command(ahc, dev, cmd);
 }
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
 static int
-ahc_linux_slave_alloc(Scsi_Device *device)
+ahc_linux_slave_alloc(struct scsi_device *device)
 {
         struct  ahc_softc *ahc;
+        struct ahc_linux_target *targ;
+        struct scsi_target *starget = device->sdev_target;
+        struct ahc_linux_device *dev;
+        unsigned int target_offset;
+        unsigned long flags;
+        int retval = -ENOMEM;
+
+        target_offset = starget->id;
+        if (starget->channel != 0)
+                target_offset += 8;
 
         ahc = *((struct ahc_softc **)device->host->hostdata);
         if (bootverbose)
                 printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id);
-        return (0);
+        ahc_lock(ahc, &flags);
+        targ = ahc->platform_data->targets[target_offset];
+        if (targ == NULL) {
+                targ = ahc_linux_alloc_target(ahc, starget->channel, starget->id);
+                struct seeprom_config *sc = ahc->seep_config;
+                if (targ == NULL)
+                        goto out;
+
+                if (sc) {
+                        unsigned short scsirate;
+                        struct ahc_devinfo devinfo;
+                        struct ahc_initiator_tinfo *tinfo;
+                        struct ahc_tmode_tstate *tstate;
+                        char channel = starget->channel + 'A';
+                        unsigned int our_id = ahc->our_id;
+
+                        if (starget->channel)
+                                our_id = ahc->our_id_b;
+
+                        if ((ahc->features & AHC_ULTRA2) != 0) {
+                                scsirate = sc->device_flags[target_offset] & CFXFER;
+                        } else {
+                                scsirate = (sc->device_flags[target_offset] & CFXFER) << 4;
+                                if (sc->device_flags[target_offset] & CFSYNCH)
+                                        scsirate |= SOFS;
+                        }
+                        if (sc->device_flags[target_offset] & CFWIDEB) {
+                                scsirate |= WIDEXFER;
+                                spi_max_width(starget) = 1;
+                        } else
+                                spi_max_width(starget) = 0;
+                        spi_min_period(starget) = 
+                                ahc_find_period(ahc, scsirate, AHC_SYNCRATE_DT);
+                        tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id,
+                                                    targ->target, &tstate);
+                        ahc_compile_devinfo(&devinfo, our_id, targ->target,
+                                            CAM_LUN_WILDCARD, channel,
+                                            ROLE_INITIATOR);
+                        ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0,
+                                         AHC_TRANS_GOAL, /*paused*/FALSE);
+                        ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
+                                      AHC_TRANS_GOAL, /*paused*/FALSE);
+                }
+                        
+        }
+        dev = targ->devices[device->lun];
+        if (dev == NULL) {
+                dev = ahc_linux_alloc_device(ahc, targ, device->lun);
+                if (dev == NULL)
+                        goto out;
+        }
+        retval = 0;
+
+ out:
+        ahc_unlock(ahc, &flags);
+        return retval;
 }
 
 static int
-ahc_linux_slave_configure(Scsi_Device *device)
+ahc_linux_slave_configure(struct scsi_device *device)
 {
         struct  ahc_softc *ahc;
         struct  ahc_linux_device *dev;
-        u_long  flags;
 
         ahc = *((struct ahc_softc **)device->host->hostdata);
+
         if (bootverbose)
                 printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id);
-        ahc_midlayer_entrypoint_lock(ahc, &flags);
-        /*
-         * Since Linux has attached to the device, configure
-         * it so we don't free and allocate the device
-         * structure on every command.
-         */
-        dev = ahc_linux_get_device(ahc, device->channel,
-                                   device->id, device->lun,
-                                   /*alloc*/TRUE);
-        if (dev != NULL) {
-                dev->flags &= ~AHC_DEV_UNCONFIGURED;
-                dev->scsi_device = device;
-                ahc_linux_device_queue_depth(ahc, dev);
-        }
-        ahc_midlayer_entrypoint_unlock(ahc, &flags);
+
+        dev = ahc_linux_get_device(ahc, device->channel, device->id,
+                                   device->lun);
+        dev->scsi_device = device;
+        ahc_linux_device_queue_depth(ahc, dev);
 
         /* Initial Domain Validation */
         if (!spi_initial_dv(device->sdev_target))
                 spi_dv_device(device);
 
-        return (0);
+        return 0;
 }
 
 static void
-ahc_linux_slave_destroy(Scsi_Device *device)
+ahc_linux_slave_destroy(struct scsi_device *device)
 {
         struct  ahc_softc *ahc;
         struct  ahc_linux_device *dev;
-        u_long  flags;
 
         ahc = *((struct ahc_softc **)device->host->hostdata);
         if (bootverbose)
                 printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id);
-        ahc_midlayer_entrypoint_lock(ahc, &flags);
         dev = ahc_linux_get_device(ahc, device->channel,
-                                   device->id, device->lun,
-                                           /*alloc*/FALSE);
-        /*
-         * Filter out "silly" deletions of real devices by only
-         * deleting devices that have had slave_configure()
-         * called on them.  All other devices that have not
-         * been configured will automatically be deleted by
-         * the refcounting process.
-         */
-        if (dev != NULL
-         && (dev->flags & AHC_DEV_SLAVE_CONFIGURED) != 0) {
-                dev->flags |= AHC_DEV_UNCONFIGURED;
-                if (TAILQ_EMPTY(&dev->busyq)
-                 && dev->active == 0
-                 && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
-                        ahc_linux_free_device(ahc, dev);
-        }
-        ahc_midlayer_entrypoint_unlock(ahc, &flags);
-}
-#else
-/*
- * Sets the queue depth for each SCSI device hanging
- * off the input host adapter.
- */
-static void
-ahc_linux_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs)
-{
-        Scsi_Device *device;
-        Scsi_Device *ldev;
-        struct  ahc_softc *ahc;
-        u_long  flags;
+                                   device->id, device->lun);
 
-        ahc = *((struct ahc_softc **)host->hostdata);
-        ahc_lock(ahc, &flags);
-        for (device = scsi_devs; device != NULL; device = device->next) {
+        BUG_ON(dev->active);
 
-                /*
-                 * Watch out for duplicate devices.  This works around
-                 * some quirks in how the SCSI scanning code does its
-                 * device management.
-                 */
-                for (ldev = scsi_devs; ldev != device; ldev = ldev->next) {
-                        if (ldev->host == device->host
-                         && ldev->channel == device->channel
-                         && ldev->id == device->id
-                         && ldev->lun == device->lun)
-                                break;
-                }
-                /* Skip duplicate. */
-                if (ldev != device)
-                        continue;
-
-                if (device->host == host) {
-                        struct   ahc_linux_device *dev;
-
-                        /*
-                         * Since Linux has attached to the device, configure
-                         * it so we don't free and allocate the device
-                         * structure on every command.
-                         */
-                        dev = ahc_linux_get_device(ahc, device->channel,
-                                                   device->id, device->lun,
-                                                   /*alloc*/TRUE);
-                        if (dev != NULL) {
-                                dev->flags &= ~AHC_DEV_UNCONFIGURED;
-                                dev->scsi_device = device;
-                                ahc_linux_device_queue_depth(ahc, dev);
-                                device->queue_depth = dev->openings
-                                                    + dev->active;
-                                if ((dev->flags & (AHC_DEV_Q_BASIC
-                                                | AHC_DEV_Q_TAGGED)) == 0) {
-                                        /*
-                                         * We allow the OS to queue 2 untagged
-                                         * transactions to us at any time even
-                                         * though we can only execute them
-                                         * serially on the controller/device.
-                                         * This should remove some latency.
-                                         */
-                                        device->queue_depth = 2;
-                                }
-                        }
-                }
-        }
-        ahc_unlock(ahc, &flags);
+        ahc_linux_free_device(ahc, dev);
 }
-#endif
 
 #if defined(__i386__)
 /*
  * Return the disk geometry for the given SCSI device.
  */
 static int
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
 ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
                     sector_t capacity, int geom[])
 {
         uint8_t *bh;
-#else
-ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
-{
-        struct  scsi_device *sdev = disk->device;
-        u_long  capacity = disk->capacity;
-        struct  buffer_head *bh;
-#endif
         int      heads;
         int      sectors;
         int      cylinders;
@@ -1090,22 +774,11 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
         ahc = *((struct ahc_softc **)sdev->host->hostdata);
         channel = sdev->channel;
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
         bh = scsi_bios_ptable(bdev);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,17)
-        bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, block_size(dev));
-#else
-        bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, 1024);
-#endif
-
         if (bh) {
                 ret = scsi_partsize(bh, capacity,
                                     &geom[2], &geom[0], &geom[1]);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
                 kfree(bh);
-#else
-                brelse(bh);
-#endif
                 if (ret != -1)
                         return (ret);
         }
@@ -1135,7 +808,7 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
  * Abort the current SCSI command(s).
  */
 static int
-ahc_linux_abort(Scsi_Cmnd *cmd)
+ahc_linux_abort(struct scsi_cmnd *cmd)
 {
         int error;
 
@@ -1149,7 +822,7 @@ ahc_linux_abort(Scsi_Cmnd *cmd)
  * Attempt to send a target reset message to the device that timed out.
  */
 static int
-ahc_linux_dev_reset(Scsi_Cmnd *cmd)
+ahc_linux_dev_reset(struct scsi_cmnd *cmd)
 {
         int error;
 
@@ -1163,18 +836,14 @@ ahc_linux_dev_reset(Scsi_Cmnd *cmd)
  * Reset the SCSI bus.
  */
 static int
-ahc_linux_bus_reset(Scsi_Cmnd *cmd)
+ahc_linux_bus_reset(struct scsi_cmnd *cmd)
 {
         struct ahc_softc *ahc;
-        u_long s;
         int    found;
 
         ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
-        ahc_midlayer_entrypoint_lock(ahc, &s);
         found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
                                   /*initiate reset*/TRUE);
-        ahc_linux_run_complete_queue(ahc);
-        ahc_midlayer_entrypoint_unlock(ahc, &s);
 
         if (bootverbose)
                 printf("%s: SCSI bus reset delivered. "
@@ -1183,7 +852,7 @@ ahc_linux_bus_reset(Scsi_Cmnd *cmd)
         return SUCCESS;
 }
 
-Scsi_Host_Template aic7xxx_driver_template = {
+struct scsi_host_template aic7xxx_driver_template = {
         .module                 = THIS_MODULE,
         .name                   = "aic7xxx",
         .proc_info              = ahc_linux_proc_info,
@@ -1206,33 +875,6 @@ Scsi_Host_Template aic7xxx_driver_template = {
 
 /**************************** Tasklet Handler *********************************/
 
-/*
- * In 2.4.X and above, this routine is called from a tasklet,
- * so we must re-acquire our lock prior to executing this code.
- * In all prior kernels, ahc_schedule_runq() calls this routine
- * directly and ahc_schedule_runq() is called with our lock held.
- */
-static void
-ahc_runq_tasklet(unsigned long data)
-{
-        struct ahc_softc* ahc;
-        struct ahc_linux_device *dev;
-        u_long flags;
-
-        ahc = (struct ahc_softc *)data;
-        ahc_lock(ahc, &flags);
-        while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
-        
-                TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
-                dev->flags &= ~AHC_DEV_ON_RUN_LIST;
-                ahc_linux_check_device_queue(ahc, dev);
-                /* Yeild to our interrupt handler */
-                ahc_unlock(ahc, &flags);
-                ahc_lock(ahc, &flags);
-        }
-        ahc_unlock(ahc, &flags);
-}
-
 /******************************** Macros **************************************/
 #define BUILD_SCSIID(ahc, cmd)                                              \
         ((((cmd)->device->id << TID_SHIFT) & TID)                           \
@@ -1278,37 +920,11 @@ int
 ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
                  int flags, bus_dmamap_t *mapp)
 {
-        bus_dmamap_t map;
-
-        map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT);
-        if (map == NULL)
-                return (ENOMEM);
-        /*
-         * Although we can dma data above 4GB, our
-         * "consistent" memory is below 4GB for
-         * space efficiency reasons (only need a 4byte
-         * address).  For this reason, we have to reset
-         * our dma mask when doing allocations.
-         */
-        if (ahc->dev_softc != NULL)
-                if (pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) {
-                        printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
-                        kfree(map);
-                        return (ENODEV);
-                }
         *vaddr = pci_alloc_consistent(ahc->dev_softc,
-                                      dmat->maxsize, &map->bus_addr);
-        if (ahc->dev_softc != NULL)
-                if (pci_set_dma_mask(ahc->dev_softc,
-                                     ahc->platform_data->hw_dma_mask)) {
-                        printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
-                        kfree(map);
-                        return (ENODEV);
-                }
+                                      dmat->maxsize, mapp);
         if (*vaddr == NULL)
-                return (ENOMEM);
-        *mapp = map;
-        return(0);
+                return ENOMEM;
+        return 0;
 }
 
 void
@@ -1316,7 +932,7 @@ ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
                 void* vaddr, bus_dmamap_t map)
 {
         pci_free_consistent(ahc->dev_softc, dmat->maxsize,
-                            vaddr, map->bus_addr);
+                            vaddr, map);
 }
 
 int
@@ -1330,7 +946,7 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
          */
         bus_dma_segment_t stack_sg;
 
-        stack_sg.ds_addr = map->bus_addr;
+        stack_sg.ds_addr = map;
         stack_sg.ds_len = dmat->maxsize;
         cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
         return (0);
@@ -1339,12 +955,6 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
 void
 ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
 {
-        /*
-         * The map may is NULL in our < 2.3.X implementation.
-         * Now it's 2.6.5, but just in case...
-         */
-        BUG_ON(map == NULL);
-        free(map, M_DEVBUF);
 }
 
 int
@@ -1550,7 +1160,7 @@ __setup("aic7xxx=", aic7xxx_setup);
 uint32_t aic7xxx_verbose;
 
 int
-ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
+ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *template)
 {
         char     buf[80];
         struct   Scsi_Host *host;
@@ -1564,11 +1174,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
 
         *((struct ahc_softc **)host->hostdata) = ahc;
         ahc_lock(ahc, &s);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
         scsi_assign_lock(host, &ahc->platform_data->spin_lock);
-#elif AHC_SCSI_HAS_HOST_LOCK != 0
-        host->lock = &ahc->platform_data->spin_lock;
-#endif
         ahc->platform_data->host = host;
         host->can_queue = AHC_MAX_QUEUE;
         host->cmd_per_lun = 2;
@@ -1587,19 +1193,14 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
                 ahc_set_name(ahc, new_name);
         }
         host->unique_id = ahc->unit;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-        scsi_set_pci_device(host, ahc->dev_softc);
-#endif
         ahc_linux_initialize_scsi_bus(ahc);
         ahc_intr_enable(ahc, TRUE);
         ahc_unlock(ahc, &s);
 
         host->transportt = ahc_linux_transport_template;
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
         scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */
         scsi_scan_host(host);
-#endif
         return (0);
 }
 
@@ -1717,19 +1318,9 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
         if (ahc->platform_data == NULL)
                 return (ENOMEM);
         memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data));
-        TAILQ_INIT(&ahc->platform_data->completeq);
-        TAILQ_INIT(&ahc->platform_data->device_runq);
         ahc->platform_data->irq = AHC_LINUX_NOIRQ;
-        ahc->platform_data->hw_dma_mask = 0xFFFFFFFF;
         ahc_lockinit(ahc);
-        ahc_done_lockinit(ahc);
-        init_timer(&ahc->platform_data->completeq_timer);
-        ahc->platform_data->completeq_timer.data = (u_long)ahc;
-        ahc->platform_data->completeq_timer.function =
-            (ahc_linux_callback_t *)ahc_linux_thread_run_complete_queue;
         init_MUTEX_LOCKED(&ahc->platform_data->eh_sem);
-        tasklet_init(&ahc->platform_data->runq_tasklet, ahc_runq_tasklet,
-                     (unsigned long)ahc);
         ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
         ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
         if (aic7xxx_pci_parity == 0)
@@ -1746,12 +1337,8 @@ ahc_platform_free(struct ahc_softc *ahc)
         int i, j;
 
         if (ahc->platform_data != NULL) {
-                del_timer_sync(&ahc->platform_data->completeq_timer);
-                tasklet_kill(&ahc->platform_data->runq_tasklet);
                 if (ahc->platform_data->host != NULL) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
                         scsi_remove_host(ahc->platform_data->host);
-#endif
                         scsi_host_put(ahc->platform_data->host);
                 }
 
@@ -1787,16 +1374,7 @@ ahc_platform_free(struct ahc_softc *ahc)
                         release_mem_region(ahc->platform_data->mem_busaddr,
                                            0x1000);
                 }
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-                /*
-                 * In 2.4 we detach from the scsi midlayer before the PCI
-                 * layer invokes our remove callback.  No per-instance
-                 * detach is provided, so we must reach inside the PCI
-                 * subsystem's internals and detach our driver manually.
-                 */
-                if (ahc->dev_softc != NULL)
-                        ahc->dev_softc->driver = NULL;
-#endif
+
                 free(ahc->platform_data, M_DEVBUF);
         }
 }
@@ -1820,7 +1398,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
 
         dev = ahc_linux_get_device(ahc, devinfo->channel - 'A',
                                    devinfo->target,
-                                   devinfo->lun, /*alloc*/FALSE);
+                                   devinfo->lun);
         if (dev == NULL)
                 return;
         was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED);
@@ -1873,7 +1451,6 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
                 dev->maxtags = 0;
                 dev->openings =  1 - dev->active;
         }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
         if (dev->scsi_device != NULL) {
                 switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) {
                 case AHC_DEV_Q_BASIC:
@@ -1899,90 +1476,13 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
                         break;
                 }
         }
-#endif
 }
 
 int
 ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel,
                         int lun, u_int tag, role_t role, uint32_t status)
 {
-        int chan;
-        int maxchan;
-        int targ;
-        int maxtarg;
-        int clun;
-        int maxlun;
-        int count;
-
-        if (tag != SCB_LIST_NULL)
-                return (0);
-
-        chan = 0;
-        if (channel != ALL_CHANNELS) {
-                chan = channel - 'A';
-                maxchan = chan + 1;
-        } else {
-                maxchan = (ahc->features & AHC_TWIN) ? 2 : 1;
-        }
-        targ = 0;
-        if (target != CAM_TARGET_WILDCARD) {
-                targ = target;
-                maxtarg = targ + 1;
-        } else {
-                maxtarg = (ahc->features & AHC_WIDE) ? 16 : 8;
-        }
-        clun = 0;
-        if (lun != CAM_LUN_WILDCARD) {
-                clun = lun;
-                maxlun = clun + 1;
-        } else {
-                maxlun = AHC_NUM_LUNS;
-        }
-
-        count = 0;
-        for (; chan < maxchan; chan++) {
-
-                for (; targ < maxtarg; targ++) {
-
-                        for (; clun < maxlun; clun++) {
-                                struct ahc_linux_device *dev;
-                                struct ahc_busyq *busyq;
-                                struct ahc_cmd *acmd;
-
-                                dev = ahc_linux_get_device(ahc, chan,
-                                                           targ, clun,
-                                                           /*alloc*/FALSE);
-                                if (dev == NULL)
-                                        continue;
-
-                                busyq = &dev->busyq;
-                                while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
-                                        Scsi_Cmnd *cmd;
-
-                                        cmd = &acmd_scsi_cmd(acmd);
-                                        TAILQ_REMOVE(busyq, acmd,
-                                                     acmd_links.tqe);
-                                        count++;
-                                        cmd->result = status << 16;
-                                        ahc_linux_queue_cmd_complete(ahc, cmd);
-                                }
-                        }
-                }
-        }
-
-        return (count);
-}
-
-static void
-ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc)
-{
-        u_long flags;
-
-        ahc_lock(ahc, &flags);
-        del_timer(&ahc->platform_data->completeq_timer);
-        ahc->platform_data->flags &= ~AHC_RUN_CMPLT_Q_TIMER;
-        ahc_linux_run_complete_queue(ahc);
-        ahc_unlock(ahc, &flags);
+        return 0;
 }
 
 static u_int
@@ -2045,213 +1545,200 @@ ahc_linux_device_queue_depth(struct ahc_softc *ahc,
         }
 }
 
-static void
-ahc_linux_run_device_queue(struct ahc_softc *ahc, struct ahc_linux_device *dev)
+static int
+ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
+                      struct scsi_cmnd *cmd)
 {
-        struct   ahc_cmd *acmd;
-        struct   scsi_cmnd *cmd;
         struct   scb *scb;
         struct   hardware_scb *hscb;
         struct   ahc_initiator_tinfo *tinfo;
         struct   ahc_tmode_tstate *tstate;
         uint16_t mask;
+        struct scb_tailq *untagged_q = NULL;
 
-        if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0)
-                panic("running device on run list");
+        /*
+         * Schedule us to run later.  The only reason we are not
+         * running is because the whole controller Q is frozen.
+         */
+        if (ahc->platform_data->qfrozen != 0)
+                return SCSI_MLQUEUE_HOST_BUSY;
 
-        while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL
-            && dev->openings > 0 && dev->qfrozen == 0) {
+        /*
+         * We only allow one untagged transaction
+         * per target in the initiator role unless
+         * we are storing a full busy target *lun*
+         * table in SCB space.
+         */
+        if (!blk_rq_tagged(cmd->request)
+            && (ahc->features & AHC_SCB_BTT) == 0) {
+                int target_offset;
 
-                /*
-                 * Schedule us to run later.  The only reason we are not
-                 * running is because the whole controller Q is frozen.
-                 */
-                if (ahc->platform_data->qfrozen != 0) {
-                        TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
-                                          dev, links);
-                        dev->flags |= AHC_DEV_ON_RUN_LIST;
-                        return;
-                }
-                /*
-                 * Get an scb to use.
-                 */
-                if ((scb = ahc_get_scb(ahc)) == NULL) {
-                        TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
-                                         dev, links);
-                        dev->flags |= AHC_DEV_ON_RUN_LIST;
-                        ahc->flags |= AHC_RESOURCE_SHORTAGE;
-                        return;
-                }
-                TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe);
-                cmd = &acmd_scsi_cmd(acmd);
-                scb->io_ctx = cmd;
-                scb->platform_data->dev = dev;
-                hscb = scb->hscb;
-                cmd->host_scribble = (char *)scb;
+                target_offset = cmd->device->id + cmd->device->channel * 8;
+                untagged_q = &(ahc->untagged_queues[target_offset]);
+                if (!TAILQ_EMPTY(untagged_q))
+                        /* if we're already executing an untagged command
+                         * we're busy to another */
+                        return SCSI_MLQUEUE_DEVICE_BUSY;
+        }
 
-                /*
-                 * Fill out basics of the HSCB.
-                 */
-                hscb->control = 0;
-                hscb->scsiid = BUILD_SCSIID(ahc, cmd);
-                hscb->lun = cmd->device->lun;
-                mask = SCB_GET_TARGET_MASK(ahc, scb);
-                tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
-                                            SCB_GET_OUR_ID(scb),
-                                            SCB_GET_TARGET(ahc, scb), &tstate);
-                hscb->scsirate = tinfo->scsirate;
-                hscb->scsioffset = tinfo->curr.offset;
-                if ((tstate->ultraenb & mask) != 0)
-                        hscb->control |= ULTRAENB;
-
-                if ((ahc->user_discenable & mask) != 0)
-                        hscb->control |= DISCENB;
-
-                if ((tstate->auto_negotiate & mask) != 0) {
-                        scb->flags |= SCB_AUTO_NEGOTIATE;
-                        scb->hscb->control |= MK_MESSAGE;
-                }
+        /*
+         * Get an scb to use.
+         */
+        if ((scb = ahc_get_scb(ahc)) == NULL) {
+                        ahc->flags |= AHC_RESOURCE_SHORTAGE;
+                        return SCSI_MLQUEUE_HOST_BUSY;
+        }
 
-                if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-                        int     msg_bytes;
-                        uint8_t tag_msgs[2];
+        scb->io_ctx = cmd;
+        scb->platform_data->dev = dev;
+        hscb = scb->hscb;
+        cmd->host_scribble = (char *)scb;
 
-                        msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
-                        if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
-                                hscb->control |= tag_msgs[0];
-                                if (tag_msgs[0] == MSG_ORDERED_TASK)
-                                        dev->commands_since_idle_or_otag = 0;
-                        } else
-#endif
-                        if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
-                         && (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
-                                hscb->control |= MSG_ORDERED_TASK;
+        /*
+         * Fill out basics of the HSCB.
+         */
+        hscb->control = 0;
+        hscb->scsiid = BUILD_SCSIID(ahc, cmd);
+        hscb->lun = cmd->device->lun;
+        mask = SCB_GET_TARGET_MASK(ahc, scb);
+        tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
+                                    SCB_GET_OUR_ID(scb),
+                                    SCB_GET_TARGET(ahc, scb), &tstate);
+        hscb->scsirate = tinfo->scsirate;
+        hscb->scsioffset = tinfo->curr.offset;
+        if ((tstate->ultraenb & mask) != 0)
+                hscb->control |= ULTRAENB;
+        
+        if ((ahc->user_discenable & mask) != 0)
+                hscb->control |= DISCENB;
+        
+        if ((tstate->auto_negotiate & mask) != 0) {
+                scb->flags |= SCB_AUTO_NEGOTIATE;
+                scb->hscb->control |= MK_MESSAGE;
+        }
+
+        if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
+                int     msg_bytes;
+                uint8_t tag_msgs[2];
+                
+                msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
+                if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
+                        hscb->control |= tag_msgs[0];
+                        if (tag_msgs[0] == MSG_ORDERED_TASK)
                                 dev->commands_since_idle_or_otag = 0;
-                        } else {
-                                hscb->control |= MSG_SIMPLE_TASK;
-                        }
-                }
-
-                hscb->cdb_len = cmd->cmd_len;
-                if (hscb->cdb_len <= 12) {
-                        memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
+                } else if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
+                                && (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
+                        hscb->control |= MSG_ORDERED_TASK;
+                        dev->commands_since_idle_or_otag = 0;
                 } else {
-                        memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
-                        scb->flags |= SCB_CDB32_PTR;
+                        hscb->control |= MSG_SIMPLE_TASK;
                 }
+        }
 
-                scb->platform_data->xfer_len = 0;
-                ahc_set_residual(scb, 0);
-                ahc_set_sense_residual(scb, 0);
-                scb->sg_count = 0;
-                if (cmd->use_sg != 0) {
-                        struct  ahc_dma_seg *sg;
-                        struct  scatterlist *cur_seg;
-                        struct  scatterlist *end_seg;
-                        int     nseg;
-
-                        cur_seg = (struct scatterlist *)cmd->request_buffer;
-                        nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
-                            cmd->sc_data_direction);
-                        end_seg = cur_seg + nseg;
-                        /* Copy the segments into the SG list. */
-                        sg = scb->sg_list;
-                        /*
-                         * The sg_count may be larger than nseg if
-                         * a transfer crosses a 32bit page.
-                         */ 
-                        while (cur_seg < end_seg) {
-                                dma_addr_t addr;
-                                bus_size_t len;
-                                int consumed;
-
-                                addr = sg_dma_address(cur_seg);
-                                len = sg_dma_len(cur_seg);
-                                consumed = ahc_linux_map_seg(ahc, scb,
-                                                             sg, addr, len);
-                                sg += consumed;
-                                scb->sg_count += consumed;
-                                cur_seg++;
-                        }
-                        sg--;
-                        sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
-
-                        /*
-                         * Reset the sg list pointer.
-                         */
-                        scb->hscb->sgptr =
-                            ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
+        hscb->cdb_len = cmd->cmd_len;
+        if (hscb->cdb_len <= 12) {
+                memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
+        } else {
+                memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
+                scb->flags |= SCB_CDB32_PTR;
+        }
 
-                        /*
-                         * Copy the first SG into the "current"
-                         * data pointer area.
-                         */
-                        scb->hscb->dataptr = scb->sg_list->addr;
-                        scb->hscb->datacnt = scb->sg_list->len;
-                } else if (cmd->request_bufflen != 0) {
-                        struct   ahc_dma_seg *sg;
+        scb->platform_data->xfer_len = 0;
+        ahc_set_residual(scb, 0);
+        ahc_set_sense_residual(scb, 0);
+        scb->sg_count = 0;
+        if (cmd->use_sg != 0) {
+                struct  ahc_dma_seg *sg;
+                struct  scatterlist *cur_seg;
+                struct  scatterlist *end_seg;
+                int     nseg;
+
+                cur_seg = (struct scatterlist *)cmd->request_buffer;
+                nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
+                                  cmd->sc_data_direction);
+                end_seg = cur_seg + nseg;
+                /* Copy the segments into the SG list. */
+                sg = scb->sg_list;
+                /*
+                 * The sg_count may be larger than nseg if
+                 * a transfer crosses a 32bit page.
+                 */ 
+                while (cur_seg < end_seg) {
                         dma_addr_t addr;
-
-                        sg = scb->sg_list;
-                        addr = pci_map_single(ahc->dev_softc,
-                               cmd->request_buffer,
-                               cmd->request_bufflen,
-                               cmd->sc_data_direction);
-                        scb->platform_data->buf_busaddr = addr;
-                        scb->sg_count = ahc_linux_map_seg(ahc, scb,
-                                                          sg, addr,
-                                                          cmd->request_bufflen);
-                        sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
-
-                        /*
-                         * Reset the sg list pointer.
-                         */
-                        scb->hscb->sgptr =
-                            ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
-
-                        /*
-                         * Copy the first SG into the "current"
-                         * data pointer area.
-                         */
-                        scb->hscb->dataptr = sg->addr;
-                        scb->hscb->datacnt = sg->len;
-                } else {
-                        scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
-                        scb->hscb->dataptr = 0;
-                        scb->hscb->datacnt = 0;
-                        scb->sg_count = 0;
+                        bus_size_t len;
+                        int consumed;
+
+                        addr = sg_dma_address(cur_seg);
+                        len = sg_dma_len(cur_seg);
+                        consumed = ahc_linux_map_seg(ahc, scb,
+                                                     sg, addr, len);
+                        sg += consumed;
+                        scb->sg_count += consumed;
+                        cur_seg++;
                 }
+                sg--;
+                sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
 
-                ahc_sync_sglist(ahc, scb, BUS_DMASYNC_PREWRITE);
-                LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
-                dev->openings--;
-                dev->active++;
-                dev->commands_issued++;
-                if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
-                        dev->commands_since_idle_or_otag++;
+                /*
+                 * Reset the sg list pointer.
+                 */
+                scb->hscb->sgptr =
+                        ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
+                
+                /*
+                 * Copy the first SG into the "current"
+                 * data pointer area.
+                 */
+                scb->hscb->dataptr = scb->sg_list->addr;
+                scb->hscb->datacnt = scb->sg_list->len;
+        } else if (cmd->request_bufflen != 0) {
+                struct   ahc_dma_seg *sg;
+                dma_addr_t addr;
+
+                sg = scb->sg_list;
+                addr = pci_map_single(ahc->dev_softc,
+                                      cmd->request_buffer,
+                                      cmd->request_bufflen,
+                                      cmd->sc_data_direction);
+                scb->platform_data->buf_busaddr = addr;
+                scb->sg_count = ahc_linux_map_seg(ahc, scb,
+                                                  sg, addr,
+                                                  cmd->request_bufflen);
+                sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
 
                 /*
-                 * We only allow one untagged transaction
-                 * per target in the initiator role unless
-                 * we are storing a full busy target *lun*
-                 * table in SCB space.
+                 * Reset the sg list pointer.
                  */
-                if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
-                 && (ahc->features & AHC_SCB_BTT) == 0) {
-                        struct scb_tailq *untagged_q;
-                        int target_offset;
-
-                        target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
-                        untagged_q = &(ahc->untagged_queues[target_offset]);
-                        TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
-                        scb->flags |= SCB_UNTAGGEDQ;
-                        if (TAILQ_FIRST(untagged_q) != scb)
-                                continue;
-                }
-                scb->flags |= SCB_ACTIVE;
-                ahc_queue_scb(ahc, scb);
+                scb->hscb->sgptr =
+                        ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
+
+                /*
+                 * Copy the first SG into the "current"
+                 * data pointer area.
+                 */
+                scb->hscb->dataptr = sg->addr;
+                scb->hscb->datacnt = sg->len;
+        } else {
+                scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
+                scb->hscb->dataptr = 0;
+                scb->hscb->datacnt = 0;
+                scb->sg_count = 0;
         }
+
+        LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
+        dev->openings--;
+        dev->active++;
+        dev->commands_issued++;
+        if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
+                dev->commands_since_idle_or_otag++;
+        
+        scb->flags |= SCB_ACTIVE;
+        if (untagged_q) {
+                TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
+                scb->flags |= SCB_UNTAGGEDQ;
+        }
+        ahc_queue_scb(ahc, scb);
+        return 0;
 }
 
 /*
@@ -2267,9 +1754,6 @@ ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
         ahc = (struct ahc_softc *) dev_id;
         ahc_lock(ahc, &flags); 
         ours = ahc_intr(ahc);
-        if (ahc_linux_next_device_to_run(ahc) != NULL)
-                ahc_schedule_runq(ahc);
-        ahc_linux_run_complete_queue(ahc);
         ahc_unlock(ahc, &flags);
         return IRQ_RETVAL(ours);
 }
@@ -2278,8 +1762,6 @@ void
 ahc_platform_flushwork(struct ahc_softc *ahc)
 {
 
-        while (ahc_linux_run_complete_queue(ahc) != NULL)
-                ;
 }
 
 static struct ahc_linux_target*
@@ -2348,9 +1830,6 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
         if (dev == NULL)
                 return (NULL);
         memset(dev, 0, sizeof(*dev));
-        init_timer(&dev->timer);
-        TAILQ_INIT(&dev->busyq);
-        dev->flags = AHC_DEV_UNCONFIGURED;
         dev->lun = lun;
         dev->target = targ;
 
@@ -2373,7 +1852,7 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
 }
 
 static void
-__ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
+ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
 {
         struct ahc_linux_target *targ;
 
@@ -2385,13 +1864,6 @@ __ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
                 ahc_linux_free_target(ahc, targ);
 }
 
-static void
-ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
-{
-        del_timer_sync(&dev->timer);
-        __ahc_linux_free_device(ahc, dev);
-}
-
 void
 ahc_send_async(struct ahc_softc *ahc, char channel,
                u_int target, u_int lun, ac_code code, void *arg)
@@ -2463,28 +1935,9 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
         }
         case AC_SENT_BDR:
         {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
                 WARN_ON(lun != CAM_LUN_WILDCARD);
                 scsi_report_device_reset(ahc->platform_data->host,
                                          channel - 'A', target);
-#else
-                Scsi_Device *scsi_dev;
-
-                /*
-                 * Find the SCSI device associated with this
-                 * request and indicate that a UA is expected.
-                 */
-                for (scsi_dev = ahc->platform_data->host->host_queue;
-                     scsi_dev != NULL; scsi_dev = scsi_dev->next) {
-                        if (channel - 'A' == scsi_dev->channel
-                         && target == scsi_dev->id
-                         && (lun == CAM_LUN_WILDCARD
-                          || lun == scsi_dev->lun)) {
-                                scsi_dev->was_reset = 1;
-                                scsi_dev->expecting_cc_ua = 1;
-                        }
-                }
-#endif
                 break;
         }
         case AC_BUS_RESET:
@@ -2504,7 +1957,7 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
 void
 ahc_done(struct ahc_softc *ahc, struct scb *scb)
 {
-        Scsi_Cmnd *cmd;
+        struct scsi_cmnd *cmd;
         struct     ahc_linux_device *dev;
 
         LIST_REMOVE(scb, pending_links);
@@ -2515,7 +1968,7 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
                 untagged_q = &(ahc->untagged_queues[target_offset]);
                 TAILQ_REMOVE(untagged_q, scb, links.tqe);
-                ahc_run_untagged_queue(ahc, untagged_q);
+                BUG_ON(!TAILQ_EMPTY(untagged_q));
         }
 
         if ((scb->flags & SCB_ACTIVE) == 0) {
@@ -2583,8 +2036,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
                 }
         } else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
                 ahc_linux_handle_scsi_status(ahc, dev, scb);
-        } else if (ahc_get_transaction_status(scb) == CAM_SEL_TIMEOUT) {
-                dev->flags |= AHC_DEV_UNCONFIGURED;
         }
 
         if (dev->openings == 1
@@ -2606,16 +2057,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
         if (dev->active == 0)
                 dev->commands_since_idle_or_otag = 0;
 
-        if (TAILQ_EMPTY(&dev->busyq)) {
-                if ((dev->flags & AHC_DEV_UNCONFIGURED) != 0
-                 && dev->active == 0
-                 && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
-                        ahc_linux_free_device(ahc, dev);
-        } else if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
-                TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
-                dev->flags |= AHC_DEV_ON_RUN_LIST;
-        }
-
         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
                 printf("Recovery SCB completes\n");
                 if (ahc_get_transaction_status(scb) == CAM_BDR_SENT
@@ -2659,7 +2100,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
         case SCSI_STATUS_CHECK_COND:
         case SCSI_STATUS_CMD_TERMINATED:
         {
-                Scsi_Cmnd *cmd;
+                struct scsi_cmnd *cmd;
 
                 /*
                  * Copy sense information to the OS's cmd
@@ -2754,52 +2195,15 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
                 ahc_platform_set_tags(ahc, &devinfo,
                              (dev->flags & AHC_DEV_Q_BASIC)
                            ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
-                /* FALLTHROUGH */
-        }
-        case SCSI_STATUS_BUSY:
-        {
-                /*
-                 * Set a short timer to defer sending commands for
-                 * a bit since Linux will not delay in this case.
-                 */
-                if ((dev->flags & AHC_DEV_TIMER_ACTIVE) != 0) {
-                        printf("%s:%c:%d: Device Timer still active during "
-                               "busy processing\n", ahc_name(ahc),
-                                dev->target->channel, dev->target->target);
-                        break;
-                }
-                dev->flags |= AHC_DEV_TIMER_ACTIVE;
-                dev->qfrozen++;
-                init_timer(&dev->timer);
-                dev->timer.data = (u_long)dev;
-                dev->timer.expires = jiffies + (HZ/2);
-                dev->timer.function = ahc_linux_dev_timed_unfreeze;
-                add_timer(&dev->timer);
                 break;
         }
         }
 }
 
 static void
-ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
+ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
 {
         /*
-         * Typically, the complete queue has very few entries
-         * queued to it before the queue is emptied by
-         * ahc_linux_run_complete_queue, so sorting the entries
-         * by generation number should be inexpensive.
-         * We perform the sort so that commands that complete
-         * with an error are retuned in the order origionally
-         * queued to the controller so that any subsequent retries
-         * are performed in order.  The underlying ahc routines do
-         * not guarantee the order that aborted commands will be
-         * returned to us.
-         */
-        struct ahc_completeq *completeq;
-        struct ahc_cmd *list_cmd;
-        struct ahc_cmd *acmd;
-
-        /*
          * Map CAM error codes into Linux Error codes.  We
          * avoid the conversion so that the DV code has the
          * full error information available when making
@@ -2852,26 +2256,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
                         new_status = DID_ERROR;
                         break;
                 case CAM_REQUEUE_REQ:
-                        /*
-                         * If we want the request requeued, make sure there
-                         * are sufficent retries.  In the old scsi error code,
-                         * we used to be able to specify a result code that
-                         * bypassed the retry count.  Now we must use this
-                         * hack.  We also "fake" a check condition with
-                         * a sense code of ABORTED COMMAND.  This seems to
-                         * evoke a retry even if this command is being sent
-                         * via the eh thread.  Ick!  Ick!  Ick!
-                         */
-                        if (cmd->retries > 0)
-                                cmd->retries--;
-                        new_status = DID_OK;
-                        ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
-                        cmd->result |= (DRIVER_SENSE << 24);
-                        memset(cmd->sense_buffer, 0,
-                               sizeof(cmd->sense_buffer));
-                        cmd->sense_buffer[0] = SSD_ERRCODE_VALID
-                                             | SSD_CURRENT_ERROR;
-                        cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
+                        new_status = DID_REQUEUE;
                         break;
                 default:
                         /* We should never get here */
@@ -2882,17 +2267,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
                 ahc_cmd_set_transaction_status(cmd, new_status);
         }
 
-        completeq = &ahc->platform_data->completeq;
-        list_cmd = TAILQ_FIRST(completeq);
-        acmd = (struct ahc_cmd *)cmd;
-        while (list_cmd != NULL
-            && acmd_scsi_cmd(list_cmd).serial_number
-             < acmd_scsi_cmd(acmd).serial_number)
-                list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
-        if (list_cmd != NULL)
-                TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
-        else
-                TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
+        cmd->scsi_done(cmd);
 }
 
 static void
@@ -2940,7 +2315,6 @@ ahc_linux_release_simq(u_long arg)
                 ahc->platform_data->qfrozen--;
         if (ahc->platform_data->qfrozen == 0)
                 unblock_reqs = 1;
-        ahc_schedule_runq(ahc);
         ahc_unlock(ahc, &s);
         /*
          * There is still a race here.  The mid-layer
@@ -2952,37 +2326,12 @@ ahc_linux_release_simq(u_long arg)
                 scsi_unblock_requests(ahc->platform_data->host);
 }
 
-static void
-ahc_linux_dev_timed_unfreeze(u_long arg)
-{
-        struct ahc_linux_device *dev;
-        struct ahc_softc *ahc;
-        u_long s;
-
-        dev = (struct ahc_linux_device *)arg;
-        ahc = dev->target->ahc;
-        ahc_lock(ahc, &s);
-        dev->flags &= ~AHC_DEV_TIMER_ACTIVE;
-        if (dev->qfrozen > 0)
-                dev->qfrozen--;
-        if (dev->qfrozen == 0
-         && (dev->flags & AHC_DEV_ON_RUN_LIST) == 0)
-                ahc_linux_run_device_queue(ahc, dev);
-        if (TAILQ_EMPTY(&dev->busyq)
-         && dev->active == 0)
-                __ahc_linux_free_device(ahc, dev);
-        ahc_unlock(ahc, &s);
-}
-
 static int
-ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
+ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
 {
         struct ahc_softc *ahc;
-        struct ahc_cmd *acmd;
-        struct ahc_cmd *list_acmd;
         struct ahc_linux_device *dev;
         struct scb *pending_scb;
-        u_long s;
         u_int  saved_scbptr;
         u_int  active_scb_index;
         u_int  last_phase;
@@ -2998,7 +2347,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
         paused = FALSE;
         wait = FALSE;
         ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
-        acmd = (struct ahc_cmd *)cmd;
 
         printf("%s:%d:%d:%d: Attempting to queue a%s message\n",
                ahc_name(ahc), cmd->device->channel,
@@ -3011,22 +2359,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
         printf("\n");
 
         /*
-         * In all versions of Linux, we have to work around
-         * a major flaw in how the mid-layer is locked down
-         * if we are to sleep successfully in our error handler
-         * while allowing our interrupt handler to run.  Since
-         * the midlayer acquires either the io_request_lock or
-         * our lock prior to calling us, we must use the
-         * spin_unlock_irq() method for unlocking our lock.
-         * This will force interrupts to be enabled on the
-         * current CPU.  Since the EH thread should not have
-         * been running with CPU interrupts disabled other than
-         * by acquiring either the io_request_lock or our own
-         * lock, this *should* be safe.
-         */
-        ahc_midlayer_entrypoint_lock(ahc, &s);
-
-        /*
          * First determine if we currently own this command.
          * Start by searching the device queue.  If not found
          * there, check the pending_scb list.  If not found
@@ -3034,7 +2366,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
          * command, return success.
          */
         dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
-                                   cmd->device->lun, /*alloc*/FALSE);
+                                   cmd->device->lun);
 
         if (dev == NULL) {
                 /*
@@ -3048,24 +2380,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
                 goto no_cmd;
         }
 
-        TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) {
-                if (list_acmd == acmd)
-                        break;
-        }
-
-        if (list_acmd != NULL) {
-                printf("%s:%d:%d:%d: Command found on device queue\n",
-                       ahc_name(ahc), cmd->device->channel, cmd->device->id,
-                       cmd->device->lun);
-                if (flag == SCB_ABORT) {
-                        TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe);
-                        cmd->result = DID_ABORT << 16;
-                        ahc_linux_queue_cmd_complete(ahc, cmd);
-                        retval = SUCCESS;
-                        goto done;
-                }
-        }
-
         if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0
          && ahc_search_untagged_queues(ahc, cmd, cmd->device->id,
                                        cmd->device->channel + 'A',
@@ -3299,53 +2613,42 @@ done:
                 }
                 spin_lock_irq(&ahc->platform_data->spin_lock);
         }
-        ahc_schedule_runq(ahc);
-        ahc_linux_run_complete_queue(ahc);
-        ahc_midlayer_entrypoint_unlock(ahc, &s);
         return (retval);
 }
 
 void
 ahc_platform_dump_card_state(struct ahc_softc *ahc)
 {
-        struct ahc_linux_device *dev;
-        int channel;
-        int maxchannel;
-        int target;
-        int maxtarget;
-        int lun;
-        int i;
-
-        maxchannel = (ahc->features & AHC_TWIN) ? 1 : 0;
-        maxtarget = (ahc->features & AHC_WIDE) ? 15 : 7;
-        for (channel = 0; channel <= maxchannel; channel++) {
+}
 
-                for (target = 0; target <=maxtarget; target++) {
+static void ahc_linux_exit(void);
 
-                        for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
-                                struct ahc_cmd *acmd;
+static void ahc_linux_get_width(struct scsi_target *starget)
+{
+        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+        struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
+        struct ahc_tmode_tstate *tstate;
+        struct ahc_initiator_tinfo *tinfo 
+                = ahc_fetch_transinfo(ahc,
+                                      starget->channel + 'A',
+                                      shost->this_id, starget->id, &tstate);
+        spi_width(starget) = tinfo->curr.width;
+}
 
-                                dev = ahc_linux_get_device(ahc, channel, target,
-                                                           lun, /*alloc*/FALSE);
-                                if (dev == NULL)
-                                        continue;
+static void ahc_linux_set_width(struct scsi_target *starget, int width)
+{
+        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+        struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
+        struct ahc_devinfo devinfo;
+        unsigned long flags;
 
-                                printf("DevQ(%d:%d:%d): ",
-                                       channel, target, lun);
-                                i = 0;
-                                TAILQ_FOREACH(acmd, &dev->busyq,
-                                              acmd_links.tqe) {
-                                        if (i++ > AHC_SCB_MAX)
-                                                break;
-                                }
-                                printf("%d waiting\n", i);
-                        }
-                }
-        }
+        ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+                            starget->channel + 'A', ROLE_INITIATOR);
+        ahc_lock(ahc, &flags);
+        ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
+        ahc_unlock(ahc, &flags);
 }
 
-static void ahc_linux_exit(void);
-
 static void ahc_linux_get_period(struct scsi_target *starget)
 {
         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3376,8 +2679,21 @@ static void ahc_linux_set_period(struct scsi_target *starget, int period)
         if (offset == 0)
                 offset = MAX_OFFSET;
 
+        if (period < 9)
+                period = 9;     /* 12.5ns is our minimum */
+        if (period == 9)
+                ppr_options |= MSG_EXT_PPR_DT_REQ;
+
         ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
                             starget->channel + 'A', ROLE_INITIATOR);
+
+        /* all PPR requests apart from QAS require wide transfers */
+        if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
+                ahc_linux_get_width(starget);
+                if (spi_width(starget) == 0)
+                        ppr_options &= MSG_EXT_PPR_QAS_REQ;
+        }
+
         syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
         ahc_lock(ahc, &flags);
         ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset,
@@ -3425,32 +2741,6 @@ static void ahc_linux_set_offset(struct scsi_target *starget, int offset)
         ahc_unlock(ahc, &flags);
 }
 
-static void ahc_linux_get_width(struct scsi_target *starget)
-{
-        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
-        struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
-        struct ahc_tmode_tstate *tstate;
-        struct ahc_initiator_tinfo *tinfo 
-                = ahc_fetch_transinfo(ahc,
-                                      starget->channel + 'A',
-                                      shost->this_id, starget->id, &tstate);
-        spi_width(starget) = tinfo->curr.width;
-}
-
-static void ahc_linux_set_width(struct scsi_target *starget, int width)
-{
-        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
-        struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
-        struct ahc_devinfo devinfo;
-        unsigned long flags;
-
-        ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
-                            starget->channel + 'A', ROLE_INITIATOR);
-        ahc_lock(ahc, &flags);
-        ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
-        ahc_unlock(ahc, &flags);
-}
-
 static void ahc_linux_get_dt(struct scsi_target *starget)
 {
         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3479,10 +2769,15 @@ static void ahc_linux_set_dt(struct scsi_target *starget, int dt)
         unsigned long flags;
         struct ahc_syncrate *syncrate;
 
+        if (dt) {
+                period = 9;     /* 12.5ns is the only period valid for DT */
+                ppr_options |= MSG_EXT_PPR_DT_REQ;
+        } else if (period == 9)
+                period = 10;    /* if resetting DT, period must be >= 25ns */
+
         ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
                             starget->channel + 'A', ROLE_INITIATOR);
-        syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
-                                     dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
+        syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,AHC_SYNCRATE_DT);
         ahc_lock(ahc, &flags);
         ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
                          ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3514,7 +2809,6 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
         unsigned int ppr_options = tinfo->curr.ppr_options
                 & ~MSG_EXT_PPR_QAS_REQ;
         unsigned int period = tinfo->curr.period;
-        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
         unsigned long flags;
         struct ahc_syncrate *syncrate;
 
@@ -3523,8 +2817,7 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
 
         ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
                             starget->channel + 'A', ROLE_INITIATOR);
-        syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
-                                     dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
+        syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
         ahc_lock(ahc, &flags);
         ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
                          ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3556,7 +2849,6 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
         unsigned int ppr_options = tinfo->curr.ppr_options
                 & ~MSG_EXT_PPR_IU_REQ;
         unsigned int period = tinfo->curr.period;
-        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
         unsigned long flags;
         struct ahc_syncrate *syncrate;
 
@@ -3565,8 +2857,7 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
 
         ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
                             starget->channel + 'A', ROLE_INITIATOR);
-        syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
-                                     dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
+        syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
         ahc_lock(ahc, &flags);
         ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
                          ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3599,7 +2890,6 @@ static struct spi_function_template ahc_linux_transport_functions = {
 static int __init
 ahc_linux_init(void)
 {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
         ahc_linux_transport_template = spi_attach_transport(&ahc_linux_transport_functions);
         if (!ahc_linux_transport_template)
                 return -ENODEV;
@@ -3608,29 +2898,11 @@ ahc_linux_init(void)
         spi_release_transport(ahc_linux_transport_template);
         ahc_linux_exit();
         return -ENODEV;
-#else
-        scsi_register_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
-        if (aic7xxx_driver_template.present == 0) {
-                scsi_unregister_module(MODULE_SCSI_HA,
-                                       &aic7xxx_driver_template);
-                return (-ENODEV);
-        }
-
-        return (0);
-#endif
 }
 
 static void
 ahc_linux_exit(void)
 {
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-        /*
-         * In 2.4 we have to unregister from the PCI core _after_
-         * unregistering from the scsi midlayer to avoid dangling
-         * references.
-         */
-        scsi_unregister_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
-#endif
         ahc_linux_pci_exit();
         ahc_linux_eisa_exit();
         spi_release_transport(ahc_linux_transport_template);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.h b/drivers/scsi/aic7xxx/aic7xxx_osm.h
index ed9027bd8a40..30c200d5bcd5 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.h
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.h
@@ -59,6 +59,7 @@
 #ifndef _AIC7XXX_LINUX_H_
 #define _AIC7XXX_LINUX_H_
 
+#include <linux/config.h>
 #include <linux/types.h>
 #include <linux/blkdev.h>
 #include <linux/delay.h>
@@ -66,18 +67,21 @@
 #include <linux/pci.h>
 #include <linux/smp_lock.h>
 #include <linux/version.h>
+#include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <asm/byteorder.h>
 #include <asm/io.h>
 
-#include <linux/interrupt.h> /* For tasklet support. */
-#include <linux/config.h>
-#include <linux/slab.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_tcq.h>
 
 /* Core SCSI definitions */
 #define AIC_LIB_PREFIX ahc
-#include "scsi.h"
-#include <scsi/scsi_host.h>
 
 /* Name space conflict with BSD queue macros */
 #ifdef LIST_HEAD
@@ -106,7 +110,7 @@
 /************************* Forward Declarations *******************************/
 struct ahc_softc;
 typedef struct pci_dev *ahc_dev_softc_t;
-typedef Scsi_Cmnd      *ahc_io_ctx_t;
+typedef struct scsi_cmnd      *ahc_io_ctx_t;
 
 /******************************* Byte Order ***********************************/
 #define ahc_htobe16(x)  cpu_to_be16(x)
@@ -144,7 +148,7 @@ typedef Scsi_Cmnd      *ahc_io_ctx_t;
 extern u_int aic7xxx_no_probe;
 extern u_int aic7xxx_allow_memio;
 extern int aic7xxx_detect_complete;
-extern Scsi_Host_Template aic7xxx_driver_template;
+extern struct scsi_host_template aic7xxx_driver_template;
 
 /***************************** Bus Space/DMA **********************************/
 
@@ -174,11 +178,7 @@ struct ahc_linux_dma_tag
 };
 typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
 
-struct ahc_linux_dmamap
-{
-        dma_addr_t      bus_addr;
-};
-typedef struct ahc_linux_dmamap* bus_dmamap_t;
+typedef dma_addr_t bus_dmamap_t;
 
 typedef int bus_dma_filter_t(void*, dma_addr_t);
 typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
@@ -281,12 +281,6 @@ ahc_scb_timer_reset(struct scb *scb, u_int usec)
 /***************************** SMP support ************************************/
 #include <linux/spinlock.h>
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK))
-#define AHC_SCSI_HAS_HOST_LOCK 1
-#else
-#define AHC_SCSI_HAS_HOST_LOCK 0
-#endif
-
 #define AIC7XXX_DRIVER_VERSION "6.2.36"
 
 /**************************** Front End Queues ********************************/
@@ -328,20 +322,15 @@ struct ahc_cmd {
  */
 TAILQ_HEAD(ahc_busyq, ahc_cmd);
 typedef enum {
-        AHC_DEV_UNCONFIGURED     = 0x01,
         AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
-        AHC_DEV_TIMER_ACTIVE     = 0x04, /* Our timer is active */
-        AHC_DEV_ON_RUN_LIST      = 0x08, /* Queued to be run later */
         AHC_DEV_Q_BASIC          = 0x10, /* Allow basic device queuing */
         AHC_DEV_Q_TAGGED         = 0x20, /* Allow full SCSI2 command queueing */
         AHC_DEV_PERIODIC_OTAG    = 0x40, /* Send OTAG to prevent starvation */
-        AHC_DEV_SLAVE_CONFIGURED = 0x80  /* slave_configure() has been called */
 } ahc_linux_dev_flags;
 
 struct ahc_linux_target;
 struct ahc_linux_device {
         TAILQ_ENTRY(ahc_linux_device) links;
-        struct          ahc_busyq busyq;
 
         /*
          * The number of transactions currently
@@ -382,11 +371,6 @@ struct ahc_linux_device {
         ahc_linux_dev_flags     flags;
 
         /*
-         * Per device timer.
-         */
-        struct timer_list       timer;
-
-        /*
          * The high limit for the tags variable.
          */
         u_int                   maxtags;
@@ -419,7 +403,7 @@ struct ahc_linux_device {
 #define AHC_OTAG_THRESH 500
 
         int                     lun;
-        Scsi_Device            *scsi_device;
+        struct scsi_device       *scsi_device;
         struct                  ahc_linux_target *target;
 };
 
@@ -439,32 +423,16 @@ struct ahc_linux_target {
  * manner and are allocated below 4GB, the number of S/G segments is
  * unrestricted.
  */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/*
- * We dynamically adjust the number of segments in pre-2.5 kernels to
- * avoid fragmentation issues in the SCSI mid-layer's private memory
- * allocator.  See aic7xxx_osm.c ahc_linux_size_nseg() for details.
- */
-extern u_int ahc_linux_nseg;
-#define AHC_NSEG ahc_linux_nseg
-#define AHC_LINUX_MIN_NSEG 64
-#else
 #define AHC_NSEG 128
-#endif
 
 /*
  * Per-SCB OSM storage.
  */
-typedef enum {
-        AHC_UP_EH_SEMAPHORE = 0x1
-} ahc_linux_scb_flags;
-
 struct scb_platform_data {
         struct ahc_linux_device *dev;
         dma_addr_t               buf_busaddr;
         uint32_t                 xfer_len;
         uint32_t                 sense_resid;   /* Auto-Sense residual */
-        ahc_linux_scb_flags      flags;
 };
 
 /*
@@ -473,39 +441,24 @@ struct scb_platform_data {
  * alignment restrictions of the various platforms supported by
  * this driver.
  */
-typedef enum {
-        AHC_RUN_CMPLT_Q_TIMER    = 0x10
-} ahc_linux_softc_flags;
-
-TAILQ_HEAD(ahc_completeq, ahc_cmd);
-
 struct ahc_platform_data {
         /*
          * Fields accessed from interrupt context.
          */
         struct ahc_linux_target *targets[AHC_NUM_TARGETS]; 
-        TAILQ_HEAD(, ahc_linux_device) device_runq;
-        struct ahc_completeq     completeq;
 
         spinlock_t               spin_lock;
-        struct tasklet_struct    runq_tasklet;
         u_int                    qfrozen;
-        pid_t                    dv_pid;
-        struct timer_list        completeq_timer;
         struct timer_list        reset_timer;
         struct semaphore         eh_sem;
-        struct semaphore         dv_sem;
-        struct semaphore         dv_cmd_sem;    /* XXX This needs to be in
-                                                 * the target struct
-                                                 */
-        struct scsi_device      *dv_scsi_dev;
         struct Scsi_Host        *host;          /* pointer to scsi host */
 #define AHC_LINUX_NOIRQ ((uint32_t)~0)
         uint32_t                 irq;           /* IRQ for this adapter */
         uint32_t                 bios_address;
         uint32_t                 mem_busaddr;   /* Mem Base Addr */
-        uint64_t                 hw_dma_mask;
-        ahc_linux_softc_flags    flags;
+
+#define AHC_UP_EH_SEMAPHORE      0x1
+        uint32_t                 flags;
 };
 
 /************************** OS Utility Wrappers *******************************/
@@ -594,7 +547,7 @@ ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
 
 /**************************** Initialization **********************************/
 int             ahc_linux_register_host(struct ahc_softc *,
-                                        Scsi_Host_Template *);
+                                        struct scsi_host_template *);
 
 uint64_t        ahc_linux_get_memsize(void);
 
@@ -615,17 +568,6 @@ static __inline void ahc_lockinit(struct ahc_softc *);
 static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags);
 static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags);
 
-/* Lock acquisition and release of the above lock in midlayer entry points. */
-static __inline void ahc_midlayer_entrypoint_lock(struct ahc_softc *,
-                                                  unsigned long *flags);
-static __inline void ahc_midlayer_entrypoint_unlock(struct ahc_softc *,
-                                                    unsigned long *flags);
-
-/* Lock held during command compeletion to the upper layer */
-static __inline void ahc_done_lockinit(struct ahc_softc *);
-static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags);
-static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags);
-
 /* Lock held during ahc_list manipulation and ahc softc frees */
 extern spinlock_t ahc_list_spinlock;
 static __inline void ahc_list_lockinit(void);
@@ -651,57 +593,6 @@ ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
 }
 
 static __inline void
-ahc_midlayer_entrypoint_lock(struct ahc_softc *ahc, unsigned long *flags)
-{
-        /*
-         * In 2.5.X and some 2.4.X versions, the midlayer takes our
-         * lock just before calling us, so we avoid locking again.
-         * For other kernel versions, the io_request_lock is taken
-         * just before our entry point is called.  In this case, we
-         * trade the io_request_lock for our per-softc lock.
-         */
-#if AHC_SCSI_HAS_HOST_LOCK == 0
-        spin_unlock(&io_request_lock);
-        spin_lock(&ahc->platform_data->spin_lock);
-#endif
-}
-
-static __inline void
-ahc_midlayer_entrypoint_unlock(struct ahc_softc *ahc, unsigned long *flags)
-{
-#if AHC_SCSI_HAS_HOST_LOCK == 0
-        spin_unlock(&ahc->platform_data->spin_lock);
-        spin_lock(&io_request_lock);
-#endif
-}
-
-static __inline void
-ahc_done_lockinit(struct ahc_softc *ahc)
-{
-        /*
-         * In 2.5.X, our own lock is held during completions.
-         * In previous versions, the io_request_lock is used.
-         * In either case, we can't initialize this lock again.
-         */
-}
-
-static __inline void
-ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
-{
-#if AHC_SCSI_HAS_HOST_LOCK == 0
-        spin_lock_irqsave(&io_request_lock, *flags);
-#endif
-}
-
-static __inline void
-ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
-{
-#if AHC_SCSI_HAS_HOST_LOCK == 0
-        spin_unlock_irqrestore(&io_request_lock, *flags);
-#endif
-}
-
-static __inline void
 ahc_list_lockinit(void)
 {
         spin_lock_init(&ahc_list_spinlock);
@@ -767,12 +658,6 @@ typedef enum
 } ahc_power_state;
 
 /**************************** VL/EISA Routines ********************************/
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \
-  && (defined(__i386__) || defined(__alpha__)) \
-  && (!defined(CONFIG_EISA)))
-#define CONFIG_EISA
-#endif
-
 #ifdef CONFIG_EISA
 extern uint32_t aic7xxx_probe_eisa_vl;
 int                      ahc_linux_eisa_init(void);
@@ -888,22 +773,18 @@ ahc_flush_device_writes(struct ahc_softc *ahc)
 }
 
 /**************************** Proc FS Support *********************************/
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-int     ahc_linux_proc_info(char *, char **, off_t, int, int, int);
-#else
 int     ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
                             off_t, int, int);
-#endif
 
 /*************************** Domain Validation ********************************/
 /*********************** Transaction Access Wrappers *************************/
-static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t);
+static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
 static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
-static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t);
+static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
 static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
-static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd);
+static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
 static __inline uint32_t ahc_get_transaction_status(struct scb *);
-static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd);
+static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
 static __inline uint32_t ahc_get_scsi_status(struct scb *);
 static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
 static __inline u_long ahc_get_transfer_length(struct scb *);
@@ -922,7 +803,7 @@ static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
 static __inline void ahc_freeze_scb(struct scb *scb);
 
 static __inline
-void ahc_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status)
+void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
 {
         cmd->result &= ~(CAM_STATUS_MASK << 16);
         cmd->result |= status << 16;
@@ -935,7 +816,7 @@ void ahc_set_transaction_status(struct scb *scb, uint32_t status)
 }
 
 static __inline
-void ahc_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status)
+void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
 {
         cmd->result &= ~0xFFFF;
         cmd->result |= status;
@@ -948,7 +829,7 @@ void ahc_set_scsi_status(struct scb *scb, uint32_t status)
 }
 
 static __inline
-uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd)
+uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
 {
         return ((cmd->result >> 16) & CAM_STATUS_MASK);
 }
@@ -960,7 +841,7 @@ uint32_t ahc_get_transaction_status(struct scb *scb)
 }
 
 static __inline
-uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd)
+uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
 {
         return (cmd->result & 0xFFFF);
 }
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index 6f6674aa31ef..2a0ebce83e7a 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -221,13 +221,11 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
          && ahc_linux_get_memsize() > 0x80000000
          && pci_set_dma_mask(pdev, mask_39bit) == 0) {
                 ahc->flags |= AHC_39BIT_ADDRESSING;
-                ahc->platform_data->hw_dma_mask = mask_39bit;
         } else {
                 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
                         printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
                         return (-ENODEV);
                 }
-                ahc->platform_data->hw_dma_mask = DMA_32BIT_MASK;
         }
         ahc->dev_softc = pci;
         error = ahc_pci_config(ahc, entry);
@@ -236,15 +234,8 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                 return (-error);
         }
         pci_set_drvdata(pdev, ahc);
-        if (aic7xxx_detect_complete) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
+        if (aic7xxx_detect_complete)
                 ahc_linux_register_host(ahc, &aic7xxx_driver_template);
-#else
-                printf("aic7xxx: ignoring PCI device found after "
-                       "initialization\n");
-                return (-ENODEV);
-#endif
-        }
         return (0);
 }
 
diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 85e80eecc9d0..5fece859fbd9 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -289,13 +289,8 @@ done:
  * Return information to handle /proc support for the driver.
  */
 int
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-ahc_linux_proc_info(char *buffer, char **start, off_t offset,
-                    int length, int hostno, int inout)
-#else
 ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
                     off_t offset, int length, int inout)
-#endif
 {
         struct  ahc_softc *ahc;
         struct  info_str info;
@@ -307,15 +302,7 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
 
         retval = -EINVAL;
         ahc_list_lock(&s);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-        TAILQ_FOREACH(ahc, &ahc_tailq, links) {
-                if (ahc->platform_data->host->host_no == hostno)
-                        break;
-        }
-#else
         ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
-#endif
-
         if (ahc == NULL)
                 goto done;
 
diff --git a/drivers/scsi/aic7xxx/aiclib.c b/drivers/scsi/aic7xxx/aiclib.c
index 79bfd9efd8ed..7c5a6db0e672 100644
--- a/drivers/scsi/aic7xxx/aiclib.c
+++ b/drivers/scsi/aic7xxx/aiclib.c
@@ -35,7 +35,6 @@
 #include <linux/version.h>
 
 /* Core SCSI definitions */
-#include "scsi.h"
 #include <scsi/scsi_host.h>
 #include "aiclib.h"
 #include "cam.h"
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index 28966d05435c..67c6cc40ce16 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -35,7 +35,7 @@
 
 #define SPI_PRINTK(x, l, f, a...)       dev_printk(l, &(x)->dev, f , ##a)
 
-#define SPI_NUM_ATTRS 10        /* increase this if you add attributes */
+#define SPI_NUM_ATTRS 13        /* increase this if you add attributes */
 #define SPI_OTHER_ATTRS 1       /* Increase this if you add "always
                                  * on" attributes */
 #define SPI_HOST_ATTRS  1
@@ -219,8 +219,11 @@ static int spi_setup_transport_attrs(struct device *dev)
         struct scsi_target *starget = to_scsi_target(dev);
 
         spi_period(starget) = -1;       /* illegal value */
+        spi_min_period(starget) = 0;
         spi_offset(starget) = 0;        /* async */
+        spi_max_offset(starget) = 255;
         spi_width(starget) = 0; /* narrow */
+        spi_max_width(starget) = 1;
         spi_iu(starget) = 0;    /* no IU */
         spi_dt(starget) = 0;    /* ST */
         spi_qas(starget) = 0;
@@ -235,6 +238,34 @@ static int spi_setup_transport_attrs(struct device *dev)
         return 0;
 }
 
+#define spi_transport_show_simple(field, format_string)                 \
+                                                                        \
+static ssize_t                                                          \
+show_spi_transport_##field(struct class_device *cdev, char *buf)        \
+{                                                                       \
+        struct scsi_target *starget = transport_class_to_starget(cdev); \
+        struct spi_transport_attrs *tp;                                 \
+                                                                        \
+        tp = (struct spi_transport_attrs *)&starget->starget_data;      \
+        return snprintf(buf, 20, format_string, tp->field);             \
+}
+
+#define spi_transport_store_simple(field, format_string)                \
+                                                                        \
+static ssize_t                                                          \
+store_spi_transport_##field(struct class_device *cdev, const char *buf, \
+                            size_t count)                               \
+{                                                                       \
+        int val;                                                        \
+        struct scsi_target *starget = transport_class_to_starget(cdev); \
+        struct spi_transport_attrs *tp;                                 \
+                                                                        \
+        tp = (struct spi_transport_attrs *)&starget->starget_data;      \
+        val = simple_strtoul(buf, NULL, 0);                             \
+        tp->field = val;                                                \
+        return count;                                                   \
+}
+
 #define spi_transport_show_function(field, format_string)               \
                                                                         \
 static ssize_t                                                          \
@@ -261,6 +292,25 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
         struct spi_internal *i = to_spi_internal(shost->transportt);    \
                                                                         \
         val = simple_strtoul(buf, NULL, 0);                             \
+        i->f->set_##field(starget, val);                        \
+        return count;                                                   \
+}
+
+#define spi_transport_store_max(field, format_string)                   \
+static ssize_t                                                          \
+store_spi_transport_##field(struct class_device *cdev, const char *buf, \
+                            size_t count)                               \
+{                                                                       \
+        int val;                                                        \
+        struct scsi_target *starget = transport_class_to_starget(cdev); \
+        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);    \
+        struct spi_internal *i = to_spi_internal(shost->transportt);    \
+        struct spi_transport_attrs *tp                                  \
+                = (struct spi_transport_attrs *)&starget->starget_data; \
+                                                                        \
+        val = simple_strtoul(buf, NULL, 0);                             \
+        if (val > tp->max_##field)                                      \
+                val = tp->max_##field;                                  \
         i->f->set_##field(starget, val);                                \
         return count;                                                   \
 }
@@ -272,9 +322,24 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR,			\
                          show_spi_transport_##field,                    \
                          store_spi_transport_##field);
 
+#define spi_transport_simple_attr(field, format_string)                 \
+        spi_transport_show_simple(field, format_string)                 \
+        spi_transport_store_simple(field, format_string)                \
+static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR,                      \
+                         show_spi_transport_##field,                    \
+                         store_spi_transport_##field);
+
+#define spi_transport_max_attr(field, format_string)                    \
+        spi_transport_show_function(field, format_string)               \
+        spi_transport_store_max(field, format_string)                   \
+        spi_transport_simple_attr(max_##field, format_string)           \
+static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR,                      \
+                         show_spi_transport_##field,                    \
+                         store_spi_transport_##field);
+
 /* The Parallel SCSI Tranport Attributes: */
-spi_transport_rd_attr(offset, "%d\n");
-spi_transport_rd_attr(width, "%d\n");
+spi_transport_max_attr(offset, "%d\n");
+spi_transport_max_attr(width, "%d\n");
 spi_transport_rd_attr(iu, "%d\n");
 spi_transport_rd_attr(dt, "%d\n");
 spi_transport_rd_attr(qas, "%d\n");
@@ -300,26 +365,18 @@ static CLASS_DEVICE_ATTR(revalidate, S_IWUSR, NULL, store_spi_revalidate);
 
 /* Translate the period into ns according to the current spec
  * for SDTR/PPR messages */
-static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
-
+static ssize_t
+show_spi_transport_period_helper(struct class_device *cdev, char *buf,
+                                 int period)
 {
-        struct scsi_target *starget = transport_class_to_starget(cdev);
-        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
-        struct spi_transport_attrs *tp;
         int len, picosec;
-        struct spi_internal *i = to_spi_internal(shost->transportt);
-
-        tp = (struct spi_transport_attrs *)&starget->starget_data;
-
-        if (i->f->get_period)
-                i->f->get_period(starget);
 
-        if (tp->period < 0 || tp->period > 0xff) {
+        if (period < 0 || period > 0xff) {
                 picosec = -1;
-        } else if (tp->period <= SPI_STATIC_PPR) {
-                picosec = ppr_to_ps[tp->period];
+        } else if (period <= SPI_STATIC_PPR) {
+                picosec = ppr_to_ps[period];
         } else {
-                picosec = tp->period * 4000;
+                picosec = period * 4000;
         }
 
         if (picosec == -1) {
@@ -334,12 +391,9 @@ static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
 }
 
 static ssize_t
-store_spi_transport_period(struct class_device *cdev, const char *buf,
-                            size_t count)
+store_spi_transport_period_helper(struct class_device *cdev, const char *buf,
+                                  size_t count, int *periodp)
 {
-        struct scsi_target *starget = transport_class_to_starget(cdev);
-        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
-        struct spi_internal *i = to_spi_internal(shost->transportt);
         int j, picosec, period = -1;
         char *endp;
 
@@ -368,15 +422,79 @@ store_spi_transport_period(struct class_device *cdev, const char *buf,
         if (period > 0xff)
                 period = 0xff;
 
-        i->f->set_period(starget, period);
+        *periodp = period;
 
         return count;
 }
 
+static ssize_t
+show_spi_transport_period(struct class_device *cdev, char *buf)
+{
+        struct scsi_target *starget = transport_class_to_starget(cdev);
+        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+        struct spi_internal *i = to_spi_internal(shost->transportt);
+        struct spi_transport_attrs *tp =
+                (struct spi_transport_attrs *)&starget->starget_data;
+
+        if (i->f->get_period)
+                i->f->get_period(starget);
+
+        return show_spi_transport_period_helper(cdev, buf, tp->period);
+}
+
+static ssize_t
+store_spi_transport_period(struct class_device *cdev, const char *buf,
+                            size_t count)
+{
+        struct scsi_target *starget = transport_class_to_starget(cdev);
+        struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+        struct spi_internal *i = to_spi_internal(shost->transportt);
+        struct spi_transport_attrs *tp =
+                (struct spi_transport_attrs *)&starget->starget_data;
+        int period, retval;
+
+        retval = store_spi_transport_period_helper(cdev, buf, count, &period);
+
+        if (period < tp->min_period)
+                period = tp->min_period;
+
+        i->f->set_period(starget, period);
+
+        return retval;
+}
+
 static CLASS_DEVICE_ATTR(period, S_IRUGO | S_IWUSR, 
                          show_spi_transport_period,
                          store_spi_transport_period);
 
+static ssize_t
+show_spi_transport_min_period(struct class_device *cdev, char *buf)
+{
+        struct scsi_target *starget = transport_class_to_starget(cdev);
+        struct spi_transport_attrs *tp =
+                (struct spi_transport_attrs *)&starget->starget_data;
+
+        return show_spi_transport_period_helper(cdev, buf, tp->min_period);
+}
+
+static ssize_t
+store_spi_transport_min_period(struct class_device *cdev, const char *buf,
+                            size_t count)
+{
+        struct scsi_target *starget = transport_class_to_starget(cdev);
+        struct spi_transport_attrs *tp =
+                (struct spi_transport_attrs *)&starget->starget_data;
+
+        return store_spi_transport_period_helper(cdev, buf, count,
+                                                 &tp->min_period);
+}
+
+
+static CLASS_DEVICE_ATTR(min_period, S_IRUGO | S_IWUSR, 
+                         show_spi_transport_min_period,
+                         store_spi_transport_min_period);
+
+
 static ssize_t show_spi_host_signalling(struct class_device *cdev, char *buf)
 {
         struct Scsi_Host *shost = transport_class_to_shost(cdev);
@@ -642,6 +760,7 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
 {
         struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt);
         struct scsi_device *sdev = sreq->sr_device;
+        struct scsi_target *starget = sdev->sdev_target;
         int len = sdev->inquiry_len;
         /* first set us up for narrow async */
         DV_SET(offset, 0);
@@ -655,9 +774,11 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
         }
 
         /* test width */
-        if (i->f->set_width && sdev->wdtr) {
+        if (i->f->set_width && spi_max_width(starget) && sdev->wdtr) {
                 i->f->set_width(sdev->sdev_target, 1);
 
+                printk("WIDTH IS %d\n", spi_max_width(starget));
+
                 if (spi_dv_device_compare_inquiry(sreq, buffer,
                                                    buffer + len,
                                                    DV_LOOPS)
@@ -684,8 +805,8 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
  retry:
 
         /* now set up to the maximum */
-        DV_SET(offset, 255);
-        DV_SET(period, 1);
+        DV_SET(offset, spi_max_offset(starget));
+        DV_SET(period, spi_min_period(starget));
 
         if (len == 0) {
                 SPI_PRINTK(sdev->sdev_target, KERN_INFO, "Domain Validation skipping write tests\n");
@@ -892,6 +1013,16 @@ EXPORT_SYMBOL(spi_display_xfer_agreement);
         if (i->f->show_##field)                                         \
                 count++
 
+#define SETUP_RELATED_ATTRIBUTE(field, rel_field)                       \
+        i->private_attrs[count] = class_device_attr_##field;            \
+        if (!i->f->set_##rel_field) {                                   \
+                i->private_attrs[count].attr.mode = S_IRUGO;            \
+                i->private_attrs[count].store = NULL;                   \
+        }                                                               \
+        i->attrs[count] = &i->private_attrs[count];                     \
+        if (i->f->show_##rel_field)                                     \
+                count++
+
 #define SETUP_HOST_ATTRIBUTE(field)                                     \
         i->private_host_attrs[count] = class_device_attr_##field;       \
         if (!i->f->set_##field) {                                       \
@@ -975,8 +1106,11 @@ spi_attach_transport(struct spi_function_template *ft)
         i->f = ft;
 
         SETUP_ATTRIBUTE(period);
+        SETUP_RELATED_ATTRIBUTE(min_period, period);
         SETUP_ATTRIBUTE(offset);
+        SETUP_RELATED_ATTRIBUTE(max_offset, offset);
         SETUP_ATTRIBUTE(width);
+        SETUP_RELATED_ATTRIBUTE(max_width, width);
         SETUP_ATTRIBUTE(iu);
         SETUP_ATTRIBUTE(dt);
         SETUP_ATTRIBUTE(qas);
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 3bbf0cc6e53f..30e8beb71430 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -682,8 +682,6 @@ static void autoconfig_16550a(struct uart_8250_port *up)
          * from EXCR1. Switch back to bank 0, change it in MCR. Then
          * switch back to bank 2, read it from EXCR1 again and check
          * it's changed. If so, set baud_base in EXCR2 to 921600. -- dwmw2
-         * On PowerPC we don't want to change baud_base, as we have
-         * a number of different divisors.  -- Tom Rini
          */
         serial_outp(up, UART_LCR, 0);
         status1 = serial_in(up, UART_MCR);
@@ -699,16 +697,25 @@ static void autoconfig_16550a(struct uart_8250_port *up)
                 serial_outp(up, UART_MCR, status1);
 
                 if ((status2 ^ status1) & UART_MCR_LOOP) {
-#ifndef CONFIG_PPC
+                        unsigned short quot;
+
                         serial_outp(up, UART_LCR, 0xE0);
+
+                        quot = serial_inp(up, UART_DLM) << 8;
+                        quot += serial_inp(up, UART_DLL);
+                        quot <<= 3;
+
                         status1 = serial_in(up, 0x04); /* EXCR1 */
                         status1 &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */
                         status1 |= 0x10;  /* 1.625 divisor for baud_base --> 921600 */
                         serial_outp(up, 0x04, status1);
+                        
+                        serial_outp(up, UART_DLL, quot & 0xff);
+                        serial_outp(up, UART_DLM, quot >> 8);
+
                         serial_outp(up, UART_LCR, 0);
-                        up->port.uartclk = 921600*16;
-#endif
 
+                        up->port.uartclk = 921600*16;
                         up->port.type = PORT_NS16550A;
                         up->capabilities |= UART_NATSEMI;
                         return;
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index 39b788d95e39..10e2990a40d4 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -61,6 +61,16 @@ struct uart_sunsab_port {
         unsigned char                   pvr_dtr_bit;    /* Which PVR bit is DTR */
         unsigned char                   pvr_dsr_bit;    /* Which PVR bit is DSR */
         int                             type;           /* SAB82532 version     */
+
+        /* Setting configuration bits while the transmitter is active
+         * can cause garbage characters to get emitted by the chip.
+         * Therefore, we cache such writes here and do the real register
+         * write the next time the transmitter becomes idle.
+         */
+        unsigned int                    cached_ebrg;
+        unsigned char                   cached_mode;
+        unsigned char                   cached_pvr;
+        unsigned char                   cached_dafo;
 };
 
 /*
@@ -236,6 +246,7 @@ receive_chars(struct uart_sunsab_port *up,
 }
 
 static void sunsab_stop_tx(struct uart_port *, unsigned int);
+static void sunsab_tx_idle(struct uart_sunsab_port *);
 
 static void transmit_chars(struct uart_sunsab_port *up,
                            union sab82532_irq_status *stat)
@@ -258,6 +269,7 @@ static void transmit_chars(struct uart_sunsab_port *up,
                 return;
 
         set_bit(SAB82532_XPR, &up->irqflags);
+        sunsab_tx_idle(up);
 
         if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
                 up->interrupt_mask1 |= SAB82532_IMR1_XPR;
@@ -397,21 +409,21 @@ static void sunsab_set_mctrl(struct uart_port *port, unsigned int mctrl)
         struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
 
         if (mctrl & TIOCM_RTS) {
-                writeb(readb(&up->regs->rw.mode) & ~SAB82532_MODE_FRTS,
-                       &up->regs->rw.mode);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-                       &up->regs->rw.mode);
+                up->cached_mode &= ~SAB82532_MODE_FRTS;
+                up->cached_mode |= SAB82532_MODE_RTS;
         } else {
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
-                       &up->regs->rw.mode);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-                       &up->regs->rw.mode);
+                up->cached_mode |= (SAB82532_MODE_FRTS |
+                                    SAB82532_MODE_RTS);
         }
         if (mctrl & TIOCM_DTR) {
-                writeb(readb(&up->regs->rw.pvr) & ~(up->pvr_dtr_bit), &up->regs->rw.pvr);
+                up->cached_pvr &= ~(up->pvr_dtr_bit);
         } else {
-                writeb(readb(&up->regs->rw.pvr) | up->pvr_dtr_bit, &up->regs->rw.pvr);
+                up->cached_pvr |= up->pvr_dtr_bit;
         }
+
+        set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+        if (test_bit(SAB82532_XPR, &up->irqflags))
+                sunsab_tx_idle(up);
 }
 
 /* port->lock is not held.  */
@@ -450,6 +462,25 @@ static void sunsab_stop_tx(struct uart_port *port, unsigned int tty_stop)
 }
 
 /* port->lock held by caller.  */
+static void sunsab_tx_idle(struct uart_sunsab_port *up)
+{
+        if (test_bit(SAB82532_REGS_PENDING, &up->irqflags)) {
+                u8 tmp;
+
+                clear_bit(SAB82532_REGS_PENDING, &up->irqflags);
+                writeb(up->cached_mode, &up->regs->rw.mode);
+                writeb(up->cached_pvr, &up->regs->rw.pvr);
+                writeb(up->cached_dafo, &up->regs->w.dafo);
+
+                writeb(up->cached_ebrg & 0xff, &up->regs->w.bgr);
+                tmp = readb(&up->regs->rw.ccr2);
+                tmp &= ~0xc0;
+                tmp |= (up->cached_ebrg >> 2) & 0xc0;
+                writeb(tmp, &up->regs->rw.ccr2);
+        }
+}
+
+/* port->lock held by caller.  */
 static void sunsab_start_tx(struct uart_port *port, unsigned int tty_start)
 {
         struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
@@ -517,12 +548,16 @@ static void sunsab_break_ctl(struct uart_port *port, int break_state)
 
         spin_lock_irqsave(&up->port.lock, flags);
 
-        val = readb(&up->regs->rw.dafo);
+        val = up->cached_dafo;
         if (break_state)
                 val |= SAB82532_DAFO_XBRK;
         else
                 val &= ~SAB82532_DAFO_XBRK;
-        writeb(val, &up->regs->rw.dafo);
+        up->cached_dafo = val;
+
+        set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+        if (test_bit(SAB82532_XPR, &up->irqflags))
+                sunsab_tx_idle(up);
 
         spin_unlock_irqrestore(&up->port.lock, flags);
 }
@@ -566,8 +601,9 @@ static int sunsab_startup(struct uart_port *port)
                SAB82532_CCR2_TOE, &up->regs->w.ccr2);
         writeb(0, &up->regs->w.ccr3);
         writeb(SAB82532_CCR4_MCK4 | SAB82532_CCR4_EBRG, &up->regs->w.ccr4);
-        writeb(SAB82532_MODE_RTS | SAB82532_MODE_FCTS |
-               SAB82532_MODE_RAC, &up->regs->w.mode);
+        up->cached_mode = (SAB82532_MODE_RTS | SAB82532_MODE_FCTS |
+                           SAB82532_MODE_RAC);
+        writeb(up->cached_mode, &up->regs->w.mode);
         writeb(SAB82532_RFC_DPS|SAB82532_RFC_RFTH_32, &up->regs->w.rfc);
         
         tmp = readb(&up->regs->rw.ccr0);
@@ -598,7 +634,6 @@ static void sunsab_shutdown(struct uart_port *port)
 {
         struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
         unsigned long flags;
-        unsigned char tmp;
 
         spin_lock_irqsave(&up->port.lock, flags);
 
@@ -609,14 +644,13 @@ static void sunsab_shutdown(struct uart_port *port)
         writeb(up->interrupt_mask1, &up->regs->w.imr1);
 
         /* Disable break condition */
-        tmp = readb(&up->regs->rw.dafo);
-        tmp &= ~SAB82532_DAFO_XBRK;
-        writeb(tmp, &up->regs->rw.dafo);
+        up->cached_dafo = readb(&up->regs->rw.dafo);
+        up->cached_dafo &= ~SAB82532_DAFO_XBRK;
+        writeb(up->cached_dafo, &up->regs->rw.dafo);
 
         /* Disable Receiver */  
-        tmp = readb(&up->regs->rw.mode);
-        tmp &= ~SAB82532_MODE_RAC;
-        writeb(tmp, &up->regs->rw.mode);
+        up->cached_mode &= ~SAB82532_MODE_RAC;
+        writeb(up->cached_mode, &up->regs->rw.mode);
 
         /*
          * XXX FIXME
@@ -685,7 +719,6 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
                                   unsigned int iflag, unsigned int baud,
                                   unsigned int quot)
 {
-        unsigned int ebrg;
         unsigned char dafo;
         int bits, n, m;
 
@@ -714,10 +747,11 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
         } else {
                 dafo |= SAB82532_DAFO_PAR_EVEN;
         }
+        up->cached_dafo = dafo;
 
         calc_ebrg(baud, &n, &m);
 
-        ebrg = n | (m << 6);
+        up->cached_ebrg = n | (m << 6);
 
         up->tec_timeout = (10 * 1000000) / baud;
         up->cec_timeout = up->tec_timeout >> 2;
@@ -770,16 +804,13 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
         uart_update_timeout(&up->port, cflag,
                             (up->port.uartclk / (16 * quot)));
 
-        /* Now bang the new settings into the chip.  */
-        sunsab_cec_wait(up);
-        sunsab_tec_wait(up);
-        writeb(dafo, &up->regs->w.dafo);
-        writeb(ebrg & 0xff, &up->regs->w.bgr);
-        writeb((readb(&up->regs->rw.ccr2) & ~0xc0) | ((ebrg >> 2) & 0xc0),
-               &up->regs->rw.ccr2);
-
-        writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RAC, &up->regs->rw.mode);
-
+        /* Now schedule a register update when the chip's
+         * transmitter is idle.
+         */
+        up->cached_mode |= SAB82532_MODE_RAC;
+        set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+        if (test_bit(SAB82532_XPR, &up->irqflags))
+                sunsab_tx_idle(up);
 }
 
 /* port->lock is not held.  */
@@ -1084,11 +1115,13 @@ static void __init sunsab_init_hw(void)
                         up->pvr_dsr_bit = (1 << 3);
                         up->pvr_dtr_bit = (1 << 2);
                 }
-                writeb((1 << 1) | (1 << 2) | (1 << 4), &up->regs->w.pvr);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
-                       &up->regs->rw.mode);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-                       &up->regs->rw.mode);
+                up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
+                writeb(up->cached_pvr, &up->regs->w.pvr);
+                up->cached_mode = readb(&up->regs->rw.mode);
+                up->cached_mode |= SAB82532_MODE_FRTS;
+                writeb(up->cached_mode, &up->regs->rw.mode);
+                up->cached_mode |= SAB82532_MODE_RTS;
+                writeb(up->cached_mode, &up->regs->rw.mode);
 
                 up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
                 up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
diff --git a/drivers/serial/sunsab.h b/drivers/serial/sunsab.h
index 686086fcbbf5..b78e1f7b8050 100644
--- a/drivers/serial/sunsab.h
+++ b/drivers/serial/sunsab.h
@@ -126,6 +126,7 @@ union sab82532_irq_status {
 /* irqflags bits */
 #define SAB82532_ALLS                   0x00000001
 #define SAB82532_XPR                    0x00000002
+#define SAB82532_REGS_PENDING           0x00000004
 
 /* RFIFO Status Byte */
 #define SAB82532_RSTAT_PE               0x80
diff --git a/fs/namei.c b/fs/namei.c
index defe6781e003..dd78f01b6de8 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1580,6 +1580,7 @@ enoent:
 fail:
         return dentry;
 }
+EXPORT_SYMBOL_GPL(lookup_create);
 
 int vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 {
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index da23ba75f3d5..c47f8fd31a2d 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -230,7 +230,6 @@ const struct reiserfs_key  MAX_KEY = {
         __constant_cpu_to_le32(0xffffffff)},}
 };
 
-const struct in_core_key  MAX_IN_CORE_KEY = {~0U, ~0U, ~0ULL>>4, 15};
 
 /* Get delimiting key of the buffer by looking for it in the buffers in the path, starting from the bottom
    of the path, and going upwards.  We must check the path's validity at each step.  If the key is not in
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 31e75125f48b..b35b87744983 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -164,7 +164,9 @@ static int finish_unfinished (struct super_block * s)
  
     /* compose key to look for "save" links */
     max_cpu_key.version = KEY_FORMAT_3_5;
-    max_cpu_key.on_disk_key = MAX_IN_CORE_KEY;
+    max_cpu_key.on_disk_key.k_dir_id = ~0U;
+    max_cpu_key.on_disk_key.k_objectid = ~0U;
+    set_cpu_key_k_offset (&max_cpu_key, ~0U);
     max_cpu_key.key_length = 3;
 
 #ifdef CONFIG_QUOTA
diff --git a/include/asm-ia64/ioctl32.h b/include/asm-ia64/ioctl32.h
deleted file mode 100644
index e69de29bb2d1..000000000000
--- a/include/asm-ia64/ioctl32.h
+++ /dev/null
diff --git a/include/asm-um/arch-signal-i386.h b/include/asm-um/arch-signal-i386.h
deleted file mode 100644
index e69de29bb2d1..000000000000
--- a/include/asm-um/arch-signal-i386.h
+++ /dev/null
diff --git a/include/asm-um/elf-i386.h b/include/asm-um/elf-i386.h
index b72e23519e00..9bab712dc5c0 100644
--- a/include/asm-um/elf-i386.h
+++ b/include/asm-um/elf-i386.h
@@ -5,7 +5,7 @@
 #ifndef __UM_ELF_I386_H
 #define __UM_ELF_I386_H
 
-#include "user.h"
+#include <asm/user.h>
 
 #define R_386_NONE      0
 #define R_386_32        1
diff --git a/include/asm-um/elf-x86_64.h b/include/asm-um/elf-x86_64.h
index 19309d001aa0..8a8246d03936 100644
--- a/include/asm-um/elf-x86_64.h
+++ b/include/asm-um/elf-x86_64.h
@@ -8,6 +8,27 @@
 
 #include <asm/user.h>
 
+/* x86-64 relocation types, taken from asm-x86_64/elf.h */
+#define R_X86_64_NONE           0       /* No reloc */
+#define R_X86_64_64             1       /* Direct 64 bit  */
+#define R_X86_64_PC32           2       /* PC relative 32 bit signed */
+#define R_X86_64_GOT32          3       /* 32 bit GOT entry */
+#define R_X86_64_PLT32          4       /* 32 bit PLT address */
+#define R_X86_64_COPY           5       /* Copy symbol at runtime */
+#define R_X86_64_GLOB_DAT       6       /* Create GOT entry */
+#define R_X86_64_JUMP_SLOT      7       /* Create PLT entry */
+#define R_X86_64_RELATIVE       8       /* Adjust by program base */
+#define R_X86_64_GOTPCREL       9       /* 32 bit signed pc relative
+                                           offset to GOT */
+#define R_X86_64_32             10      /* Direct 32 bit zero extended */
+#define R_X86_64_32S            11      /* Direct 32 bit sign extended */
+#define R_X86_64_16             12      /* Direct 16 bit zero extended */
+#define R_X86_64_PC16           13      /* 16 bit sign extended pc relative */
+#define R_X86_64_8              14      /* Direct 8 bit sign extended  */
+#define R_X86_64_PC8            15      /* 8 bit sign extended pc relative */
+
+#define R_X86_64_NUM            16
+
 typedef unsigned long elf_greg_t;
 
 #define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
@@ -44,7 +65,8 @@ typedef struct { } elf_fpregset_t;
 } while (0)
 
 #ifdef TIF_IA32 /* XXX */
-        clear_thread_flag(TIF_IA32); \
+#error XXX, indeed
+        clear_thread_flag(TIF_IA32);
 #endif
 
 #define USE_ELF_CORE_DUMP
diff --git a/include/asm-x86_64/ioctl32.h b/include/asm-x86_64/ioctl32.h
deleted file mode 100644
index e69de29bb2d1..000000000000
--- a/include/asm-x86_64/ioctl32.h
+++ /dev/null
diff --git a/include/linux/err.h b/include/linux/err.h
index 17c55df13615..ff71d2af5da3 100644
--- a/include/linux/err.h
+++ b/include/linux/err.h
@@ -13,6 +13,8 @@
  * This should be a per-architecture thing, to allow different
  * error and pointer decisions.
  */
+#define IS_ERR_VALUE(x) unlikely((x) > (unsigned long)-1000L)
+
 static inline void *ERR_PTR(long error)
 {
         return (void *) error;
@@ -25,7 +27,7 @@ static inline long PTR_ERR(const void *ptr)
 
 static inline long IS_ERR(const void *ptr)
 {
-        return unlikely((unsigned long)ptr > (unsigned long)-1000L);
+        return IS_ERR_VALUE((unsigned long)ptr);
 }
 
 #endif /* _LINUX_ERR_H */
diff --git a/include/linux/mmc/protocol.h b/include/linux/mmc/protocol.h
index 7b904c5102f6..896342817b97 100644
--- a/include/linux/mmc/protocol.h
+++ b/include/linux/mmc/protocol.h
@@ -195,6 +195,33 @@ struct _mmc_csd {
 #define MMC_VDD_35_36   0x00800000      /* VDD voltage 3.5 ~ 3.6 */
 #define MMC_CARD_BUSY   0x80000000      /* Card Power up status bit */
 
+/*
+ * Card Command Classes (CCC)
+ */
+#define CCC_BASIC               (1<<0)  /* (0) Basic protocol functions */
+                                        /* (CMD0,1,2,3,4,7,9,10,12,13,15) */
+#define CCC_STREAM_READ         (1<<1)  /* (1) Stream read commands */
+                                        /* (CMD11) */
+#define CCC_BLOCK_READ          (1<<2)  /* (2) Block read commands */
+                                        /* (CMD16,17,18) */
+#define CCC_STREAM_WRITE        (1<<3)  /* (3) Stream write commands */
+                                        /* (CMD20) */
+#define CCC_BLOCK_WRITE         (1<<4)  /* (4) Block write commands */
+                                        /* (CMD16,24,25,26,27) */
+#define CCC_ERASE               (1<<5)  /* (5) Ability to erase blocks */
+                                        /* (CMD32,33,34,35,36,37,38,39) */
+#define CCC_WRITE_PROT          (1<<6)  /* (6) Able to write protect blocks */
+                                        /* (CMD28,29,30) */
+#define CCC_LOCK_CARD           (1<<7)  /* (7) Able to lock down card */
+                                        /* (CMD16,CMD42) */
+#define CCC_APP_SPEC            (1<<8)  /* (8) Application specific */
+                                        /* (CMD55,56,57,ACMD*) */
+#define CCC_IO_MODE             (1<<9)  /* (9) I/O mode */
+                                        /* (CMD5,39,40,52,53) */
+#define CCC_SWITCH              (1<<10) /* (10) High speed switch */
+                                        /* (CMD6,34,35,36,37,50) */
+                                        /* (11) Reserved */
+                                        /* (CMD?) */
 
 /*
  * CSD field definitions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index e895f3eaf53a..d6ba068719b6 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -248,7 +248,7 @@ typedef struct {
 
 #define _spin_trylock_bh(lock)  ({preempt_disable(); local_bh_disable(); \
                                 _raw_spin_trylock(lock) ? \
-                                1 : ({preempt_enable(); local_bh_enable(); 0;});})
+                                1 : ({preempt_enable_no_resched(); local_bh_enable(); 0;});})
 
 #define _spin_lock(lock)        \
 do { \
@@ -383,7 +383,7 @@ do { \
 #define _spin_unlock_bh(lock) \
 do { \
         _raw_spin_unlock(lock); \
-        preempt_enable(); \
+        preempt_enable_no_resched(); \
         local_bh_enable(); \
         __release(lock); \
 } while (0)
@@ -391,7 +391,7 @@ do { \
 #define _write_unlock_bh(lock) \
 do { \
         _raw_write_unlock(lock); \
-        preempt_enable(); \
+        preempt_enable_no_resched(); \
         local_bh_enable(); \
         __release(lock); \
 } while (0)
@@ -423,8 +423,8 @@ do { \
 #define _read_unlock_bh(lock)   \
 do { \
         _raw_read_unlock(lock); \
+        preempt_enable_no_resched();    \
         local_bh_enable();      \
-        preempt_enable();       \
         __release(lock); \
 } while (0)
 
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 3a358c895188..6409d9cf5965 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -41,6 +41,7 @@ extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
 extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
                                         unsigned long start, unsigned long end);
 extern struct vm_struct *remove_vm_area(void *addr);
+extern struct vm_struct *__remove_vm_area(void *addr);
 extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
                         struct page ***pages);
 extern void unmap_vm_area(struct vm_struct *area);
diff --git a/include/net/act_generic.h b/include/net/act_generic.h
index 95b120781c14..c9daa7e52300 100644
--- a/include/net/act_generic.h
+++ b/include/net/act_generic.h
@@ -2,8 +2,8 @@
  * include/net/act_generic.h
  *
 */
-#ifndef ACT_GENERIC_H
-#define ACT_GENERIC_H
+#ifndef _NET_ACT_GENERIC_H
+#define _NET_ACT_GENERIC_H
 static inline int tcf_defact_release(struct tcf_defact *p, int bind)
 {
         int ret = 0;
diff --git a/include/scsi/scsi_transport_spi.h b/include/scsi/scsi_transport_spi.h
index 6dcf497bf46d..a30d6cd4c0e8 100644
--- a/include/scsi/scsi_transport_spi.h
+++ b/include/scsi/scsi_transport_spi.h
@@ -27,8 +27,11 @@ struct scsi_transport_template;
 
 struct spi_transport_attrs {
         int period;             /* value in the PPR/SDTR command */
+        int min_period;
         int offset;
+        int max_offset;
         unsigned int width:1;   /* 0 - narrow, 1 - wide */
+        unsigned int max_width:1;
         unsigned int iu:1;      /* Information Units enabled */
         unsigned int dt:1;      /* DT clocking enabled */
         unsigned int qas:1;     /* Quick Arbitration and Selection enabled */
@@ -63,8 +66,11 @@ struct spi_host_attrs {
 
 /* accessor functions */
 #define spi_period(x)   (((struct spi_transport_attrs *)&(x)->starget_data)->period)
+#define spi_min_period(x) (((struct spi_transport_attrs *)&(x)->starget_data)->min_period)
 #define spi_offset(x)   (((struct spi_transport_attrs *)&(x)->starget_data)->offset)
+#define spi_max_offset(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_offset)
 #define spi_width(x)    (((struct spi_transport_attrs *)&(x)->starget_data)->width)
+#define spi_max_width(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_width)
 #define spi_iu(x)       (((struct spi_transport_attrs *)&(x)->starget_data)->iu)
 #define spi_dt(x)       (((struct spi_transport_attrs *)&(x)->starget_data)->dt)
 #define spi_qas(x)      (((struct spi_transport_attrs *)&(x)->starget_data)->qas)
diff --git a/kernel/sched.c b/kernel/sched.c
index 0dc3158667a2..66b2ed784822 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4243,7 +4243,7 @@ static void move_task_off_dead_cpu(int dead_cpu, struct task_struct *tsk)
 
         /* No more Mr. Nice Guy. */
         if (dest_cpu == NR_CPUS) {
-                tsk->cpus_allowed = cpuset_cpus_allowed(tsk);
+                cpus_setall(tsk->cpus_allowed);
                 dest_cpu = any_online_cpu(tsk->cpus_allowed);
 
                 /*
diff --git a/kernel/spinlock.c b/kernel/spinlock.c
index e15ed17863f1..0c3f9d8bbe17 100644
--- a/kernel/spinlock.c
+++ b/kernel/spinlock.c
@@ -294,7 +294,7 @@ EXPORT_SYMBOL(_spin_unlock_irq);
 void __lockfunc _spin_unlock_bh(spinlock_t *lock)
 {
         _raw_spin_unlock(lock);
-        preempt_enable();
+        preempt_enable_no_resched();
         local_bh_enable();
 }
 EXPORT_SYMBOL(_spin_unlock_bh);
@@ -318,7 +318,7 @@ EXPORT_SYMBOL(_read_unlock_irq);
 void __lockfunc _read_unlock_bh(rwlock_t *lock)
 {
         _raw_read_unlock(lock);
-        preempt_enable();
+        preempt_enable_no_resched();
         local_bh_enable();
 }
 EXPORT_SYMBOL(_read_unlock_bh);
@@ -342,7 +342,7 @@ EXPORT_SYMBOL(_write_unlock_irq);
 void __lockfunc _write_unlock_bh(rwlock_t *lock)
 {
         _raw_write_unlock(lock);
-        preempt_enable();
+        preempt_enable_no_resched();
         local_bh_enable();
 }
 EXPORT_SYMBOL(_write_unlock_bh);
@@ -354,7 +354,7 @@ int __lockfunc _spin_trylock_bh(spinlock_t *lock)
         if (_raw_spin_trylock(lock))
                 return 1;
 
-        preempt_enable();
+        preempt_enable_no_resched();
         local_bh_enable();
         return 0;
 }
diff --git a/mm/filemap.c b/mm/filemap.c
index 47263ac3e4ea..1d33fec7bac6 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1004,7 +1004,7 @@ __generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
                 if (pos < size) {
                         retval = generic_file_direct_IO(READ, iocb,
                                                 iov, pos, nr_segs);
-                        if (retval >= 0 && !is_sync_kiocb(iocb))
+                        if (retval > 0 && !is_sync_kiocb(iocb))
                                 retval = -EIOCBQUEUED;
                         if (retval > 0)
                                 *ppos = pos + retval;
diff --git a/mm/mmap.c b/mm/mmap.c
index 63df2d698414..de54acd9942f 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1302,37 +1302,40 @@ unsigned long
 get_unmapped_area(struct file *file, unsigned long addr, unsigned long len,
                 unsigned long pgoff, unsigned long flags)
 {
-        if (flags & MAP_FIXED) {
-                unsigned long ret;
+        unsigned long ret;
 
-                if (addr > TASK_SIZE - len)
-                        return -ENOMEM;
-                if (addr & ~PAGE_MASK)
-                        return -EINVAL;
-                if (file && is_file_hugepages(file))  {
-                        /*
-                         * Check if the given range is hugepage aligned, and
-                         * can be made suitable for hugepages.
-                         */
-                        ret = prepare_hugepage_range(addr, len);
-                } else {
-                        /*
-                         * Ensure that a normal request is not falling in a
-                         * reserved hugepage range.  For some archs like IA-64,
-                         * there is a separate region for hugepages.
-                         */
-                        ret = is_hugepage_only_range(current->mm, addr, len);
-                }
-                if (ret)
-                        return -EINVAL;
-                return addr;
-        }
+        if (!(flags & MAP_FIXED)) {
+                unsigned long (*get_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
 
-        if (file && file->f_op && file->f_op->get_unmapped_area)
-                return file->f_op->get_unmapped_area(file, addr, len,
-                                                pgoff, flags);
+                get_area = current->mm->get_unmapped_area;
+                if (file && file->f_op && file->f_op->get_unmapped_area)
+                        get_area = file->f_op->get_unmapped_area;
+                addr = get_area(file, addr, len, pgoff, flags);
+                if (IS_ERR_VALUE(addr))
+                        return addr;
+        }
 
-        return current->mm->get_unmapped_area(file, addr, len, pgoff, flags);
+        if (addr > TASK_SIZE - len)
+                return -ENOMEM;
+        if (addr & ~PAGE_MASK)
+                return -EINVAL;
+        if (file && is_file_hugepages(file))  {
+                /*
+                 * Check if the given range is hugepage aligned, and
+                 * can be made suitable for hugepages.
+                 */
+                ret = prepare_hugepage_range(addr, len);
+        } else {
+                /*
+                 * Ensure that a normal request is not falling in a
+                 * reserved hugepage range.  For some archs like IA-64,
+                 * there is a separate region for hugepages.
+                 */
+                ret = is_hugepage_only_range(current->mm, addr, len);
+        }
+        if (ret)
+                return -EINVAL;
+        return addr;
 }
 
 EXPORT_SYMBOL(get_unmapped_area);
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 2bd83e5c2bbf..8ff16a1eee6a 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -248,31 +248,20 @@ struct vm_struct *get_vm_area(unsigned long size, unsigned long flags)
         return __get_vm_area(size, flags, VMALLOC_START, VMALLOC_END);
 }
 
-/**
- *      remove_vm_area  -  find and remove a contingous kernel virtual area
- *
- *      @addr:          base address
- *
- *      Search for the kernel VM area starting at @addr, and remove it.
- *      This function returns the found VM area, but using it is NOT safe
- *      on SMP machines.
- */
-struct vm_struct *remove_vm_area(void *addr)
+/* Caller must hold vmlist_lock */
+struct vm_struct *__remove_vm_area(void *addr)
 {
         struct vm_struct **p, *tmp;
 
-        write_lock(&vmlist_lock);
         for (p = &vmlist ; (tmp = *p) != NULL ;p = &tmp->next) {
                  if (tmp->addr == addr)
                          goto found;
         }
-        write_unlock(&vmlist_lock);
         return NULL;
 
 found:
         unmap_vm_area(tmp);
         *p = tmp->next;
-        write_unlock(&vmlist_lock);
 
         /*
          * Remove the guard page.
@@ -281,6 +270,24 @@ found:
         return tmp;
 }
 
+/**
+ *      remove_vm_area  -  find and remove a contingous kernel virtual area
+ *
+ *      @addr:          base address
+ *
+ *      Search for the kernel VM area starting at @addr, and remove it.
+ *      This function returns the found VM area, but using it is NOT safe
+ *      on SMP machines, except for its size or flags.
+ */
+struct vm_struct *remove_vm_area(void *addr)
+{
+        struct vm_struct *v;
+        write_lock(&vmlist_lock);
+        v = __remove_vm_area(addr);
+        write_unlock(&vmlist_lock);
+        return v;
+}
+
 void __vunmap(void *addr, int deallocate_pages)
 {
         struct vm_struct *area;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index daebd93fd8a0..760dc8238d65 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -490,6 +490,14 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*))
                         /* Partially cloned skb? */
                         if (skb_shared(frag))
                                 goto slow_path;
+
+                        BUG_ON(frag->sk);
+                        if (skb->sk) {
+                                sock_hold(skb->sk);
+                                frag->sk = skb->sk;
+                                frag->destructor = sock_wfree;
+                                skb->truesize -= frag->truesize;
+                        }
                 }
 
                 /* Everything is OK. Generate! */
diff --git a/net/ipv4/ipvs/ip_vs_xmit.c b/net/ipv4/ipvs/ip_vs_xmit.c
index faa6176bbeb1..de21da00057f 100644
--- a/net/ipv4/ipvs/ip_vs_xmit.c
+++ b/net/ipv4/ipvs/ip_vs_xmit.c
@@ -508,7 +508,6 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
                         rc = NF_ACCEPT;
                 /* do not touch skb anymore */
                 atomic_inc(&cp->in_pkts);
-                __ip_vs_conn_put(cp);
                 goto out;
         }
 
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c
index 28d9425d5c39..09e824622977 100644
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -940,37 +940,25 @@ void ip_ct_refresh_acct(struct ip_conntrack *ct,
 struct sk_buff *
 ip_ct_gather_frags(struct sk_buff *skb, u_int32_t user)
 {
-        struct sock *sk = skb->sk;
 #ifdef CONFIG_NETFILTER_DEBUG
         unsigned int olddebug = skb->nf_debug;
 #endif
 
-        if (sk) {
-                sock_hold(sk);
-                skb_orphan(skb);
-        }
+        skb_orphan(skb);
 
         local_bh_disable(); 
         skb = ip_defrag(skb, user);
         local_bh_enable();
 
-        if (!skb) {
-                if (sk)
-                        sock_put(sk);
-                return skb;
-        }
-
-        if (sk) {
-                skb_set_owner_w(skb, sk);
-                sock_put(sk);
-        }
-
-        ip_send_check(skb->nh.iph);
-        skb->nfcache |= NFC_ALTERED;
+        if (skb) {
+                ip_send_check(skb->nh.iph);
+                skb->nfcache |= NFC_ALTERED;
 #ifdef CONFIG_NETFILTER_DEBUG
-        /* Packet path as if nothing had happened. */
-        skb->nf_debug = olddebug;
+                /* Packet path as if nothing had happened. */
+                skb->nf_debug = olddebug;
 #endif
+        }
+
         return skb;
 }
 
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 0f0711417c9d..b78a53586804 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -552,13 +552,17 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
                             skb_headroom(frag) < hlen)
                             goto slow_path;
 
-                        /* Correct socket ownership. */
-                        if (frag->sk == NULL)
-                                goto slow_path;
-
                         /* Partially cloned skb? */
                         if (skb_shared(frag))
                                 goto slow_path;
+
+                        BUG_ON(frag->sk);
+                        if (skb->sk) {
+                                sock_hold(skb->sk);
+                                frag->sk = skb->sk;
+                                frag->destructor = sock_wfree;
+                                skb->truesize -= frag->truesize;
+                        }
                 }
 
                 err = 0;
@@ -1116,12 +1120,10 @@ int ip6_push_pending_frames(struct sock *sk)
                 tail_skb = &(tmp_skb->next);
                 skb->len += tmp_skb->len;
                 skb->data_len += tmp_skb->len;
-#if 0 /* Logically correct, but useless work, ip_fragment() will have to undo */
                 skb->truesize += tmp_skb->truesize;
                 __sock_put(tmp_skb->sk);
                 tmp_skb->destructor = NULL;
                 tmp_skb->sk = NULL;
-#endif
         }
 
         ipv6_addr_copy(final_dst, &fl->fl6_dst);
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 733bf52cef3e..e41ce458c2a9 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -735,11 +735,15 @@ static inline int do_one_broadcast(struct sock *sk,
 
         sock_hold(sk);
         if (p->skb2 == NULL) {
-                if (atomic_read(&p->skb->users) != 1) {
+                if (skb_shared(p->skb)) {
                         p->skb2 = skb_clone(p->skb, p->allocation);
                 } else {
-                        p->skb2 = p->skb;
-                        atomic_inc(&p->skb->users);
+                        p->skb2 = skb_get(p->skb);
+                        /*
+                         * skb ownership may have been set when
+                         * delivered to a previous socket.
+                         */
+                        skb_orphan(p->skb2);
                 }
         }
         if (p->skb2 == NULL) {
@@ -785,11 +789,12 @@ int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
         sk_for_each_bound(sk, node, &nl_table[ssk->sk_protocol].mc_list)
                 do_one_broadcast(sk, &info);
 
+        kfree_skb(skb);
+
         netlink_unlock_table();
 
         if (info.skb2)
                 kfree_skb(info.skb2);
-        kfree_skb(skb);
 
         if (info.delivered) {
                 if (info.congested && (allocation & __GFP_WAIT))
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index c478fc8db776..c420eba4876b 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -770,33 +770,12 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                 err = path_lookup(sunaddr->sun_path, LOOKUP_PARENT, &nd);
                 if (err)
                         goto out_mknod_parent;
-                /*
-                 * Yucky last component or no last component at all?
-                 * (foo/., foo/.., /////)
-                 */
-                err = -EEXIST;
-                if (nd.last_type != LAST_NORM)
-                        goto out_mknod;
-                /*
-                 * Lock the directory.
-                 */
-                down(&nd.dentry->d_inode->i_sem);
-                /*
-                 * Do the final lookup.
-                 */
-                dentry = lookup_hash(&nd.last, nd.dentry);
+
+                dentry = lookup_create(&nd, 0);
                 err = PTR_ERR(dentry);
                 if (IS_ERR(dentry))
                         goto out_mknod_unlock;
-                err = -ENOENT;
-                /*
-                 * Special case - lookup gave negative, but... we had foo/bar/
-                 * From the vfs_mknod() POV we just have a negative dentry -
-                 * all is fine. Let's be bastards - you had / on the end, you've
-                 * been asking for (non-existent) directory. -ENOENT for you.
-                 */
-                if (nd.last.name[nd.last.len] && !dentry->d_inode)
-                        goto out_mknod_dput;
+
                 /*
                  * All right, let's create it.
                  */
@@ -845,7 +824,6 @@ out_mknod_dput:
         dput(dentry);
 out_mknod_unlock:
         up(&nd.dentry->d_inode->i_sem);
-out_mknod:
         path_release(&nd);
 out_mknod_parent:
         if (err==-EEXIST)
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 080aae243ce0..2f4531fcaca2 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -698,7 +698,7 @@ int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer)
                                 return -ENOMEM;
 
                         if (skb1->sk)
-                                skb_set_owner_w(skb, skb1->sk);
+                                skb_set_owner_w(skb2, skb1->sk);
 
                         /* Looking around. Are we still alive?
                          * OK, link new skb, drop old one */
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 5ddda2c98af9..97509011c274 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -34,14 +34,21 @@ static int verify_one_alg(struct rtattr **xfrma, enum xfrm_attr_type_t type)
 {
         struct rtattr *rt = xfrma[type - 1];
         struct xfrm_algo *algp;
+        int len;
 
         if (!rt)
                 return 0;
 
-        if ((rt->rta_len - sizeof(*rt)) < sizeof(*algp))
+        len = (rt->rta_len - sizeof(*rt)) - sizeof(*algp);
+        if (len < 0)
                 return -EINVAL;
 
         algp = RTA_DATA(rt);
+
+        len -= (algp->alg_key_len + 7U) / 8; 
+        if (len < 0)
+                return -EINVAL;
+
         switch (type) {
         case XFRMA_ALG_AUTH:
                 if (!algp->alg_key_len &&
@@ -162,6 +169,7 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
         struct rtattr *rta = u_arg;
         struct xfrm_algo *p, *ualg;
         struct xfrm_algo_desc *algo;
+        int len;
 
         if (!rta)
                 return 0;
@@ -173,11 +181,12 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
                 return -ENOSYS;
         *props = algo->desc.sadb_alg_id;
 
-        p = kmalloc(sizeof(*ualg) + ualg->alg_key_len, GFP_KERNEL);
+        len = sizeof(*ualg) + (ualg->alg_key_len + 7U) / 8;
+        p = kmalloc(len, GFP_KERNEL);
         if (!p)
                 return -ENOMEM;
 
-        memcpy(p, ualg, sizeof(*ualg) + ualg->alg_key_len);
+        memcpy(p, ualg, len);
         *algpp = p;
         return 0;
 }