13 files changed, 46 insertions, 27 deletions

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 6238b5875fd1..fbafd965dcd2 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -142,7 +142,6 @@ drivers-$(CONFIG_OPROFILE)	+= arch/powerpc/oprofile/
 
 # Default to zImage, override when needed
 defaultimage-y                  := zImage
-defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
 defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
 KBUILD_IMAGE := $(defaultimage-y)
 all: $(KBUILD_IMAGE)
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 83788986b93b..ff2701949ee1 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -11,20 +11,18 @@
 #       bootloader and increase compatibility with OpenFirmware.
 #
 #       To this end we need to define BOOTCC, etc, as the tools
-#       needed to build the 32 bit image.  These are normally HOSTCC,
-#       but may be a third compiler if, for example, you are cross
-#       compiling from an intel box.  Once the 64bit ppc gcc is
-#       stable it will probably simply be a compiler switch to
-#       compile for 32bit mode.
+#       needed to build the 32 bit image.  That's normally the same
+#       compiler for the rest of the kernel, with the -m32 flag added.
 #       To make it easier to setup a cross compiler,
 #       CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
 #       in the toplevel makefile.
 
 all: $(obj)/zImage
 
-HOSTCC          := gcc
-BOOTCFLAGS      := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
-                   $(shell $(CROSS32CC) -print-file-name=include) -fPIC
+BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
+                 -fno-strict-aliasing -Os -msoft-float -pipe \
+                 -fomit-frame-pointer -fno-builtin -fPIC -nostdinc \
+                 -isystem $(shell $(CROSS32CC) -print-file-name=include)
 BOOTAFLAGS      := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
 
 ifeq ($(call cc-option-yn, -fstack-protector),y)
@@ -33,8 +31,8 @@ endif
 
 BOOTCFLAGS      += -I$(obj) -I$(srctree)/$(obj)
 
-$(obj)/44x.o: BOOTCFLAGS += -Wa,-mbooke
-$(obj)/ebony.o: BOOTCFLAGS += -Wa,-mbooke
+$(obj)/44x.o: BOOTCFLAGS += -mcpu=440
+$(obj)/ebony.o: BOOTCFLAGS += -mcpu=440
 
 zlib       := inffast.c inflate.c inftrees.c
 zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
@@ -136,6 +134,7 @@ image-$(CONFIG_PPC_EFIKA)		+= zImage.chrp
 image-$(CONFIG_PPC_PMAC)                += zImage.pmac
 image-$(CONFIG_PPC_HOLLY)               += zImage.holly-elf
 image-$(CONFIG_PPC_PRPMC2800)           += zImage.prpmc2800
+image-$(CONFIG_PPC_ISERIES)             += zImage.iseries
 image-$(CONFIG_DEFAULT_UIMAGE)          += uImage
 
 ifneq ($(CONFIG_DEVICE_TREE),"")
@@ -185,6 +184,9 @@ $(obj)/zImage.initrd.%: vmlinux $(wrapperbits)
 $(obj)/zImage.%: vmlinux $(wrapperbits)
         $(call if_changed,wrap,$*)
 
+$(obj)/zImage.iseries: vmlinux
+        $(STRIP) -s -R .comment $< -o $@
+
 $(obj)/zImage.ps3: vmlinux
         $(STRIP) -s -R .comment $< -o $@
 
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index 2ed8b8b3f0ec..da77adc73078 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -129,7 +129,7 @@ case "$platform" in
 pmac|pseries|chrp)
     platformo=$object/of.o
     ;;
-pmaccoff)
+coff)
     platformo=$object/of.o
     lds=$object/zImage.coff.lds
     ;;
@@ -220,7 +220,7 @@ case "$platform" in
 pseries|chrp)
     $object/addnote "$ofile"
     ;;
-pmaccoff)
+coff)
     ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
     $object/hack-coff "$ofile"
     ;;
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 068377a2a8dc..42c8ed6ed528 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -489,7 +489,7 @@ struct irq_host *irq_alloc_host(unsigned int revmap_type,
         case IRQ_HOST_MAP_LINEAR:
                 rmap = (unsigned int *)(host + 1);
                 for (i = 0; i < revmap_arg; i++)
-                        rmap[i] = IRQ_NONE;
+                        rmap[i] = NO_IRQ;
                 host->revmap_data.linear.size = revmap_arg;
                 smp_wmb();
                 host->revmap_data.linear.revmap = rmap;
@@ -614,7 +614,7 @@ unsigned int irq_create_mapping(struct irq_host *host,
          * host->ops->map() to update the flags
          */
         virq = irq_find_mapping(host, hwirq);
-        if (virq != IRQ_NONE) {
+        if (virq != NO_IRQ) {
                 if (host->ops->remap)
                         host->ops->remap(host, virq, hwirq);
                 pr_debug("irq: -> existing mapping on virq %d\n", virq);
@@ -741,7 +741,7 @@ void irq_dispose_mapping(unsigned int virq)
         switch(host->revmap_type) {
         case IRQ_HOST_MAP_LINEAR:
                 if (hwirq < host->revmap_data.linear.size)
-                        host->revmap_data.linear.revmap[hwirq] = IRQ_NONE;
+                        host->revmap_data.linear.revmap[hwirq] = NO_IRQ;
                 break;
         case IRQ_HOST_MAP_TREE:
                 /* Check if radix tree allocated yet */
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 066a6a7a25b8..af42ddab3ab4 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1171,11 +1171,12 @@ EXPORT_SYMBOL(of_find_node_by_name);
 
 /**
  *      of_find_node_by_type - Find a node by its "device_type" property
- *      @from:  The node to start searching from or NULL, the node
- *              you pass will not be searched, only the next one
- *              will; typically, you pass what the previous call
- *              returned. of_node_put() will be called on it
- *      @name:  The type string to match against
+ *      @from:  The node to start searching from, or NULL to start searching
+ *              the entire device tree. The node you pass will not be
+ *              searched, only the next one will; typically, you pass
+ *              what the previous call returned. of_node_put() will be
+ *              called on from for you.
+ *      @type:  The type string to match against
  *
  *      Returns a node pointer with refcount incremented, use
  *      of_node_put() on it when done.
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index f4f391cdd8f5..bf76562167c3 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -218,6 +218,7 @@ set_single_step(struct task_struct *task)
                 regs->msr |= MSR_SE;
 #endif
         }
+        set_tsk_thread_flag(task, TIF_SINGLESTEP);
 }
 
 static inline void
@@ -233,6 +234,7 @@ clear_single_step(struct task_struct *task)
                 regs->msr &= ~MSR_SE;
 #endif
         }
+        clear_tsk_thread_flag(task, TIF_SINGLESTEP);
 }
 #endif /* CONFIG_PPC32 */
 
diff --git a/arch/powerpc/platforms/pasemi/idle.c b/arch/powerpc/platforms/pasemi/idle.c
index 03cd45d8fefa..3c962d5757be 100644
--- a/arch/powerpc/platforms/pasemi/idle.c
+++ b/arch/powerpc/platforms/pasemi/idle.c
@@ -26,6 +26,7 @@
 
 #include <asm/machdep.h>
 #include <asm/reg.h>
+#include <asm/smp.h>
 
 #include "pasemi.h"
 
diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c
index 9da82c266ba9..ec9030dbb5f1 100644
--- a/arch/powerpc/platforms/ps3/interrupt.c
+++ b/arch/powerpc/platforms/ps3/interrupt.c
@@ -25,6 +25,7 @@
 #include <asm/machdep.h>
 #include <asm/udbg.h>
 #include <asm/lv1call.h>
+#include <asm/smp.h>
 
 #include "platform.h"
 
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index b854e7f1001c..f1df942072bb 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -752,6 +752,7 @@ skip_gserver_check:
 void xics_request_IPIs(void)
 {
         unsigned int ipi;
+        int rc;
 
         ipi = irq_create_mapping(xics_host, XICS_IPI);
         BUG_ON(ipi == NO_IRQ);
@@ -762,11 +763,12 @@ void xics_request_IPIs(void)
          */
         set_irq_handler(ipi, handle_percpu_irq);
         if (firmware_has_feature(FW_FEATURE_LPAR))
-                request_irq(ipi, xics_ipi_action_lpar, IRQF_DISABLED,
-                            "IPI", NULL);
+                rc = request_irq(ipi, xics_ipi_action_lpar, IRQF_DISABLED,
+                                "IPI", NULL);
         else
-                request_irq(ipi, xics_ipi_action_direct, IRQF_DISABLED,
-                            "IPI", NULL);
+                rc = request_irq(ipi, xics_ipi_action_direct, IRQF_DISABLED,
+                                "IPI", NULL);
+        BUG_ON(rc);
 }
 #endif /* CONFIG_SMP */
 
diff --git a/arch/ppc/syslib/ibm_ocp.c b/arch/ppc/syslib/ibm_ocp.c
index 3f6e55c79181..2ee176610e7c 100644
--- a/arch/ppc/syslib/ibm_ocp.c
+++ b/arch/ppc/syslib/ibm_ocp.c
@@ -1,4 +1,5 @@
 #include <linux/module.h>
+#include <asm/ibm4xx.h>
 #include <asm/ocp.h>
 
 struct ocp_sys_info_data ocp_sys_info = {
diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index f44c94abd883..ee699a7d6214 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -114,7 +114,7 @@ config PMAC_SMU
 config PMAC_APM_EMU
         tristate "APM emulation"
         select APM_EMULATION
-        depends on ADB_PMU && PM
+        depends on ADB_PMU && PM && PPC32
 
 config PMAC_MEDIABAY
         bool "Support PowerBook hotswap media bay"
diff --git a/include/asm-powerpc/pgalloc-64.h b/include/asm-powerpc/pgalloc-64.h
index d9a3a8ca58a1..94d0294341d6 100644
--- a/include/asm-powerpc/pgalloc-64.h
+++ b/include/asm-powerpc/pgalloc-64.h
@@ -90,7 +90,8 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
 static inline struct page *pte_alloc_one(struct mm_struct *mm,
                                          unsigned long address)
 {
-        return virt_to_page(pte_alloc_one_kernel(mm, address));
+        pte_t *pte = pte_alloc_one_kernel(mm, address);
+        return pte ? virt_to_page(pte) : NULL;
 }
 
 static inline void pte_free_kernel(pte_t *pte)
diff --git a/include/asm-powerpc/tlb.h b/include/asm-powerpc/tlb.h
index 0a17682663d8..66714042e438 100644
--- a/include/asm-powerpc/tlb.h
+++ b/include/asm-powerpc/tlb.h
@@ -38,6 +38,15 @@ extern void pte_free_finish(void);
 
 static inline void tlb_flush(struct mmu_gather *tlb)
 {
+        struct ppc64_tlb_batch *tlbbatch = &__get_cpu_var(ppc64_tlb_batch);
+
+        /* If there's a TLB batch pending, then we must flush it because the
+         * pages are going to be freed and we really don't want to have a CPU
+         * access a freed page because it has a stale TLB
+         */
+        if (tlbbatch->index)
+                __flush_tlb_pending(tlbbatch);
+
         pte_free_finish();
 }