13 files changed, 31 insertions, 122 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index eaed402ad346..eaaac3788110 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -7,6 +7,10 @@ config MMU
         bool
         default y
 
+config ZONE_DMA
+        bool
+        default y
+
 config LOCKDEP_SUPPORT
         bool
         default y
@@ -37,6 +41,9 @@ config GENERIC_HWEIGHT
 config GENERIC_TIME
         def_bool y
 
+config NO_IOMEM
+        def_bool y
+
 mainmenu "Linux Kernel Configuration"
 
 config S390
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index 7c621b8ef683..1406400bf3ea 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -179,6 +179,8 @@ CONFIG_XFRM=y
 # CONFIG_XFRM_USER is not set
 # CONFIG_XFRM_SUB_POLICY is not set
 CONFIG_NET_KEY=y
+CONFIG_IUCV=m
+CONFIG_AFIUCV=m
 CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
 # CONFIG_IP_ADVANCED_ROUTER is not set
@@ -508,7 +510,6 @@ CONFIG_NET_ETHERNET=y
 #
 CONFIG_LCS=m
 CONFIG_CTC=m
-CONFIG_IUCV=m
 # CONFIG_NETIUCV is not set
 # CONFIG_SMSGIUCV is not set
 # CONFIG_CLAW is not set
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index a4fda7b53640..ba5d3167df0d 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -34,7 +34,7 @@ struct hypfs_sb_info {
         struct mutex lock;              /* lock to protect update process */
 };
 
-static struct file_operations hypfs_file_ops;
+static const struct file_operations hypfs_file_ops;
 static struct file_system_type hypfs_type;
 static struct super_operations hypfs_s_ops;
 
@@ -440,7 +440,7 @@ struct dentry *hypfs_create_str(struct super_block *sb, struct dentry *dir,
         return dentry;
 }
 
-static struct file_operations hypfs_file_ops = {
+static const struct file_operations hypfs_file_ops = {
         .open           = hypfs_open,
         .release        = hypfs_release,
         .read           = do_sync_read,
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 666bb6daa148..664c669b1856 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -398,51 +398,6 @@ int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
         return err;
 }
 
-struct sysinfo32 {
-        s32 uptime;
-        u32 loads[3];
-        u32 totalram;
-        u32 freeram;
-        u32 sharedram;
-        u32 bufferram;
-        u32 totalswap;
-        u32 freeswap;
-        unsigned short procs;
-        unsigned short pads;
-        u32 totalhigh;
-        u32 freehigh;
-        unsigned int mem_unit;
-        char _f[8];
-};
-
-asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
-{
-        struct sysinfo s;
-        int ret, err;
-        mm_segment_t old_fs = get_fs ();
-        
-        set_fs (KERNEL_DS);
-        ret = sys_sysinfo((struct sysinfo __force __user *) &s);
-        set_fs (old_fs);
-        err = put_user (s.uptime, &info->uptime);
-        err |= __put_user (s.loads[0], &info->loads[0]);
-        err |= __put_user (s.loads[1], &info->loads[1]);
-        err |= __put_user (s.loads[2], &info->loads[2]);
-        err |= __put_user (s.totalram, &info->totalram);
-        err |= __put_user (s.freeram, &info->freeram);
-        err |= __put_user (s.sharedram, &info->sharedram);
-        err |= __put_user (s.bufferram, &info->bufferram);
-        err |= __put_user (s.totalswap, &info->totalswap);
-        err |= __put_user (s.freeswap, &info->freeswap);
-        err |= __put_user (s.procs, &info->procs);
-        err |= __put_user (s.totalhigh, &info->totalhigh);
-        err |= __put_user (s.freehigh, &info->freehigh);
-        err |= __put_user (s.mem_unit, &info->mem_unit);
-        if (err)
-                return -EFAULT;
-        return ret;
-}
-
 asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
                                 struct compat_timespec __user *interval)
 {
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 71e54ef0931e..97901296894e 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -517,10 +517,10 @@ sys32_swapoff_wrapper:
         llgtr   %r2,%r2                 # const char *
         jg      sys_swapoff             # branch to system call
 
-        .globl  sys32_sysinfo_wrapper
-sys32_sysinfo_wrapper:
+        .globl  compat_sys_sysinfo_wrapper
+compat_sys_sysinfo_wrapper:
         llgtr   %r2,%r2                 # struct sysinfo_emu31 *
-        jg      sys32_sysinfo           # branch to system call
+        jg      compat_sys_sysinfo      # branch to system call
 
         .globl  sys32_ipc_wrapper
 sys32_ipc_wrapper:
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index f4b62df02aa2..51653d82d7df 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -167,7 +167,7 @@ static DECLARE_MUTEX(debug_lock);
 
 static int initialized;
 
-static struct file_operations debug_file_ops = {
+static const struct file_operations debug_file_ops = {
         .owner   = THIS_MODULE,
         .read    = debug_output,
         .write   = debug_input,
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 03739813d3bf..50c5210fbc64 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -740,7 +740,7 @@ setup_arch(char **cmdline_p)
 #endif /* CONFIG_64BIT */
 
         /* Save unparsed command line copy for /proc/cmdline */
-        strlcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
+        strlcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
 
         *cmdline_p = COMMAND_LINE;
         *(*cmdline_p + COMMAND_LINE_SIZE - 1) = '\0';
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 65b52320d145..83a4ea6e3d60 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -57,7 +57,7 @@ static void smp_ext_bitcall(int, ec_bit_sig);
 static void smp_ext_bitcall_others(ec_bit_sig);
 
 /*
-5B * Structure and data for smp_call_function(). This is designed to minimise
+ * Structure and data for smp_call_function(). This is designed to minimise
  * static memory requirements. It also looks cleaner.
  */
 static DEFINE_SPINLOCK(call_lock);
@@ -104,7 +104,7 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
  * remote CPUs are nearly ready to execute <<func>> or are or have executed.
  *
  * You must not call this function with disabled interrupts or from a
- * hardware interrupt handler or from a bottom half handler.
+ * hardware interrupt handler.
  */
 {
         struct call_data_struct data;
@@ -113,8 +113,8 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
         if (cpus <= 0)
                 return 0;
 
-        /* Can deadlock when called with interrupts disabled */
-        WARN_ON(irqs_disabled());
+        /* Can deadlock when interrupts are disabled or if in wrong context */
+        WARN_ON(irqs_disabled() || in_irq());
 
         data.func = func;
         data.info = info;
@@ -123,7 +123,7 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
         if (wait)
                 atomic_set(&data.finished, 0);
 
-        spin_lock(&call_lock);
+        spin_lock_bh(&call_lock);
         call_data = &data;
         /* Send a message to all other CPUs and wait for them to respond */
         smp_ext_bitcall_others(ec_call_function);
@@ -135,7 +135,7 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
         if (wait)
                 while (atomic_read(&data.finished) != cpus)
                         cpu_relax();
-        spin_unlock(&call_lock);
+        spin_unlock_bh(&call_lock);
 
         return 0;
 }
@@ -159,6 +159,9 @@ int smp_call_function_on(void (*func) (void *info), void *info,
         if (!cpu_online(cpu))
                 return -EINVAL;
 
+        /* Can deadlock when interrupts are disabled or if in wrong context */
+        WARN_ON(irqs_disabled() || in_irq());
+
         /* disable preemption for local function call */
         curr_cpu = get_cpu();
 
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index a4ceae3dbcf1..a52c44455bf0 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -124,7 +124,7 @@ NI_SYSCALL							/* old "idle" system call */
 NI_SYSCALL                                                      /* vm86old for i386 */
 SYSCALL(sys_wait4,sys_wait4,compat_sys_wait4_wrapper)
 SYSCALL(sys_swapoff,sys_swapoff,sys32_swapoff_wrapper)          /* 115 */
-SYSCALL(sys_sysinfo,sys_sysinfo,sys32_sysinfo_wrapper)
+SYSCALL(sys_sysinfo,sys_sysinfo,compat_sys_sysinfo_wrapper)
 SYSCALL(sys_ipc,sys_ipc,sys32_ipc_wrapper)
 SYSCALL(sys_fsync,sys_fsync,sys32_fsync_wrapper)
 SYSCALL(sys_sigreturn_glue,sys_sigreturn_glue,sys32_sigreturn_glue)
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index a48907392522..c30716ae130c 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -91,11 +91,14 @@ SECTIONS
   .con_initcall.init : { *(.con_initcall.init) }
   __con_initcall_end = .;
   SECURITY_INIT
+
+#ifdef CONFIG_BLK_DEV_INITRD
   . = ALIGN(256);
   __initramfs_start = .;
   .init.ramfs : { *(.init.initramfs) }
   . = ALIGN(2);
   __initramfs_end = .;
+#endif
   . = ALIGN(256);
   __per_cpu_start = .;
   .data.percpu  : { *(.data.percpu) }
diff --git a/arch/s390/mm/Makefile b/arch/s390/mm/Makefile
index 8e09db1edbb9..f95449b29fa5 100644
--- a/arch/s390/mm/Makefile
+++ b/arch/s390/mm/Makefile
@@ -2,6 +2,6 @@
 # Makefile for the linux s390-specific parts of the memory manager.
 #
 
-obj-y    := init.o fault.o ioremap.o extmem.o mmap.o vmem.o
+obj-y    := init.o fault.o extmem.o mmap.o vmem.o
 obj-$(CONFIG_CMM) += cmm.o
 
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 9ff143e87746..641aef36ccc4 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -83,12 +83,10 @@ static inline int notify_page_fault(enum die_val val, const char *str,
 }
 #endif
 
-extern spinlock_t timerlist_lock;
 
 /*
  * Unlock any spinlocks which will prevent us from getting the
- * message out (timerlist_lock is acquired through the
- * console unblank code)
+ * message out.
  */
 void bust_spinlocks(int yes)
 {
diff --git a/arch/s390/mm/ioremap.c b/arch/s390/mm/ioremap.c
deleted file mode 100644
index 3d2100a4e209..000000000000
--- a/arch/s390/mm/ioremap.c
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- *  arch/s390/mm/ioremap.c
- *
- *  S390 version
- *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Author(s): Hartmut Penner (hp@de.ibm.com)
- *
- *  Derived from "arch/i386/mm/extable.c"
- *    (C) Copyright 1995 1996 Linus Torvalds
- *
- * Re-map IO memory to kernel address space so that we can access it.
- * This is needed for high PCI addresses that aren't mapped in the
- * 640k-1MB IO memory area on PC's
- */
-
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <linux/io.h>
-#include <asm/pgalloc.h>
-
-/*
- * Generic mapping function (not visible outside):
- */
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- */
-void * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
-{
-        void * addr;
-        struct vm_struct * area;
-
-        if (phys_addr < virt_to_phys(high_memory))
-                return phys_to_virt(phys_addr);
-        if (phys_addr & ~PAGE_MASK)
-                return NULL;
-        size = PAGE_ALIGN(size);
-        if (!size || size > phys_addr + size)
-                return NULL;
-        area = get_vm_area(size, VM_IOREMAP);
-        if (!area)
-                return NULL;
-        addr = area->addr;
-        if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
-                               phys_addr, __pgprot(flags))) {
-                vfree(addr);
-                return NULL;
-        }
-        return addr;
-}
-
-void iounmap(void *addr)
-{
-        if (addr > high_memory)
-                vfree(addr);
-}