[S390] Fix sparse warnings.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

40 files changed, 156 insertions, 152 deletions

diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index efa74af7f04a..1785bce2b919 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -403,7 +403,7 @@ static void *diag204_get_buffer(enum diag204_format fmt, int *pages)
                 *pages = 1;
                 return diag204_alloc_rbuf();
         } else {/* INFO_EXT */
-                *pages = diag204(SUBC_RSI | INFO_EXT, 0, 0);
+                *pages = diag204(SUBC_RSI | INFO_EXT, 0, NULL);
                 if (*pages <= 0)
                         return ERR_PTR(-ENOSYS);
                 else
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index cabb4ff54cd7..785c9f70ac98 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -409,7 +409,7 @@ asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
         mm_segment_t old_fs = get_fs ();
         
         set_fs (KERNEL_DS);
-        ret = sys_sysinfo(&s);
+        ret = sys_sysinfo((struct sysinfo __user *) &s);
         set_fs (old_fs);
         err = put_user (s.uptime, &info->uptime);
         err |= __put_user (s.loads[0], &info->loads[0]);
@@ -438,7 +438,7 @@ asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
         mm_segment_t old_fs = get_fs ();
         
         set_fs (KERNEL_DS);
-        ret = sys_sched_rr_get_interval(pid, &t);
+        ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
         set_fs (old_fs);
         if (put_compat_timespec(&t, interval))
                 return -EFAULT;
@@ -464,7 +464,10 @@ asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
                 }
         }
         set_fs (KERNEL_DS);
-        ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL, sigsetsize);
+        ret = sys_rt_sigprocmask(how,
+                                 set ? (sigset_t __user *) &s : NULL,
+                                 oset ? (sigset_t __user *) &s : NULL,
+                                 sigsetsize);
         set_fs (old_fs);
         if (ret) return ret;
         if (oset) {
@@ -489,7 +492,7 @@ asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
         mm_segment_t old_fs = get_fs();
                 
         set_fs (KERNEL_DS);
-        ret = sys_rt_sigpending(&s, sigsetsize);
+        ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
         set_fs (old_fs);
         if (!ret) {
                 switch (_NSIG_WORDS) {
@@ -514,7 +517,7 @@ sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
         if (copy_siginfo_from_user32(&info, uinfo))
                 return -EFAULT;
         set_fs (KERNEL_DS);
-        ret = sys_rt_sigqueueinfo(pid, sig, &info);
+        ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
         set_fs (old_fs);
         return ret;
 }
@@ -674,7 +677,8 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offse
                 return -EFAULT;
                 
         set_fs(KERNEL_DS);
-        ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
+        ret = sys_sendfile(out_fd, in_fd,
+                           offset ? (off_t __user *) &of : NULL, count);
         set_fs(old_fs);
         
         if (offset && put_user(of, offset))
@@ -694,7 +698,8 @@ asmlinkage long sys32_sendfile64(int out_fd, int in_fd,
                 return -EFAULT;
                 
         set_fs(KERNEL_DS);
-        ret = sys_sendfile64(out_fd, in_fd, offset ? &lof : NULL, count);
+        ret = sys_sendfile64(out_fd, in_fd,
+                             offset ? (loff_t __user *) &lof : NULL, count);
         set_fs(old_fs);
         
         if (offset && put_user(lof, offset))
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index c271cdab58e2..d989ed45a7aa 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -119,7 +119,7 @@ module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
         int nrela, i, j;
 
         /* Find symbol table and string table. */
-        symtab = 0;
+        symtab = NULL;
         for (i = 0; i < hdr->e_shnum; i++)
                 switch (sechdrs[i].sh_type) {
                 case SHT_SYMTAB:
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 78c8e5548caf..d3cbfa3005ec 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -172,7 +172,7 @@ void show_regs(struct pt_regs *regs)
         show_registers(regs);
         /* Show stack backtrace if pt_regs is from kernel mode */
         if (!(regs->psw.mask & PSW_MASK_PSTATE))
-                show_trace(0,(unsigned long *) regs->gprs[15]);
+                show_trace(NULL, (unsigned long *) regs->gprs[15]);
 }
 
 extern void kernel_thread_starter(void);
diff --git a/arch/s390/kernel/profile.c b/arch/s390/kernel/profile.c
index 7ba777eec1a8..b81aa1f569ca 100644
--- a/arch/s390/kernel/profile.c
+++ b/arch/s390/kernel/profile.c
@@ -13,7 +13,7 @@ static struct proc_dir_entry * root_irq_dir;
 void init_irq_proc(void)
 {
         /* create /proc/irq */
-        root_irq_dir = proc_mkdir("irq", 0);
+        root_irq_dir = proc_mkdir("irq", NULL);
 
         /* create /proc/irq/prof_cpu_mask */
         create_prof_cpu_mask(root_irq_dir);
diff --git a/arch/s390/kernel/s390_ext.c b/arch/s390/kernel/s390_ext.c
index 207bc511a6e3..c1b383537fec 100644
--- a/arch/s390/kernel/s390_ext.c
+++ b/arch/s390/kernel/s390_ext.c
@@ -24,7 +24,7 @@
  * (0x1202 external call, 0x1004 cpu timer, 0x2401 hwc console, 0x4000
  * iucv and 0x2603 pfault) this is always the first element. 
  */
-ext_int_info_t *ext_int_hash[256] = { 0, };
+ext_int_info_t *ext_int_hash[256] = { NULL, };
 
 static inline int ext_hash(__u16 code)
 {
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index f7fe9bc43397..74e6178fbaf2 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -379,7 +379,7 @@ void __init time_init(void)
                                 -xtime.tv_sec, -xtime.tv_nsec);
 
         /* request the clock comparator external interrupt */
-        if (register_early_external_interrupt(0x1004, 0,
+        if (register_early_external_interrupt(0x1004, NULL,
                                               &ext_int_info_cc) != 0)
                 panic("Couldn't request external interrupt 0x1004");
 
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 12240c03a6dd..bde1d1d59858 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -170,7 +170,7 @@ void show_stack(struct task_struct *task, unsigned long *sp)
  */
 void dump_stack(void)
 {
-        show_stack(0, 0);
+        show_stack(NULL, NULL);
 }
 
 EXPORT_SYMBOL(dump_stack);
@@ -331,9 +331,9 @@ static void inline do_trap(long interruption_code, int signr, char *str,
         }
 }
 
-static inline void *get_check_address(struct pt_regs *regs)
+static inline void __user *get_check_address(struct pt_regs *regs)
 {
-        return (void *)((regs->psw.addr-S390_lowcore.pgm_ilc) & PSW_ADDR_INSN);
+        return (void __user *)((regs->psw.addr-S390_lowcore.pgm_ilc) & PSW_ADDR_INSN);
 }
 
 void do_single_step(struct pt_regs *regs)
@@ -360,7 +360,7 @@ asmlinkage void name(struct pt_regs * regs, long interruption_code) \
         info.si_signo = signr; \
         info.si_errno = 0; \
         info.si_code = sicode; \
-        info.si_addr = (void *)siaddr; \
+        info.si_addr = siaddr; \
         do_trap(interruption_code, signr, str, regs, &info); \
 }
 
@@ -392,7 +392,7 @@ DO_ERROR_INFO(SIGILL,  "translation exception", translation_exception,
               ILL_ILLOPN, get_check_address(regs))
 
 static inline void
-do_fp_trap(struct pt_regs *regs, void *location,
+do_fp_trap(struct pt_regs *regs, void __user *location,
            int fpc, long interruption_code)
 {
         siginfo_t si;
@@ -424,10 +424,10 @@ asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
 {
         siginfo_t info;
         __u8 opcode[6];
-        __u16 *location;
+        __u16 __user *location;
         int signal = 0;
 
-        location = (__u16 *) get_check_address(regs);
+        location = get_check_address(regs);
 
         /*
          * We got all needed information from the lowcore and can
@@ -559,10 +559,10 @@ DO_ERROR_INFO(SIGILL, "specification exception", specification_exception,
 
 asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
 {
-        __u16 *location;
+        __u16 __user *location;
         int signal = 0;
 
-        location = (__u16 *) get_check_address(regs);
+        location = get_check_address(regs);
 
         /*
          * We got all needed information from the lowcore and can
diff --git a/arch/s390/lib/string.c b/arch/s390/lib/string.c
index 8240cc77e06e..ae5cf5d03d41 100644
--- a/arch/s390/lib/string.c
+++ b/arch/s390/lib/string.c
@@ -233,7 +233,7 @@ char * strrchr(const char * s, int c)
                        if (s[len] == (char) c)
                                return (char *) s + len;
                } while (--len > 0);
-       return 0;
+       return NULL;
 }
 EXPORT_SYMBOL(strrchr);
 
@@ -267,7 +267,7 @@ char * strstr(const char * s1,const char * s2)
                         return (char *) s1;
                 s1++;
         }
-        return 0;
+        return NULL;
 }
 EXPORT_SYMBOL(strstr);
 
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index 81be2fec7dc5..ceea51cff03b 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -161,7 +161,7 @@ cmm_thread(void *dummy)
 static void
 cmm_start_thread(void)
 {
-        kernel_thread(cmm_thread, 0, 0);
+        kernel_thread(cmm_thread, NULL, 0);
 }
 
 static void
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 833d5941746a..7cd82575813d 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -144,7 +144,7 @@ static void do_sigsegv(struct pt_regs *regs, unsigned long error_code,
 #endif
         si.si_signo = SIGSEGV;
         si.si_code = si_code;
-        si.si_addr = (void *) address;
+        si.si_addr = (void __user *) address;
         force_sig_info(SIGSEGV, &si, current);
 }
 
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index d7295386821c..7f6fdac74706 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -394,7 +394,7 @@ dasd_add_busid(char *bus_id, int features)
         if (!new)
                 return ERR_PTR(-ENOMEM);
         spin_lock(&dasd_devmap_lock);
-        devmap = 0;
+        devmap = NULL;
         hash = dasd_hash_busid(bus_id);
         list_for_each_entry(tmp, &dasd_hashlists[hash], list)
                 if (strncmp(tmp->bus_id, bus_id, BUS_ID_SIZE) == 0) {
@@ -406,10 +406,10 @@ dasd_add_busid(char *bus_id, int features)
                 new->devindex = dasd_max_devindex++;
                 strncpy(new->bus_id, bus_id, BUS_ID_SIZE);
                 new->features = features;
-                new->device = 0;
+                new->device = NULL;
                 list_add(&new->list, &dasd_hashlists[hash]);
                 devmap = new;
-                new = 0;
+                new = NULL;
         }
         spin_unlock(&dasd_devmap_lock);
         kfree(new);
@@ -479,7 +479,7 @@ dasd_device_from_devindex(int devindex)
         int i;
 
         spin_lock(&dasd_devmap_lock);
-        devmap = 0;
+        devmap = NULL;
         for (i = 0; (i < 256) && !devmap; i++)
                 list_for_each_entry(tmp, &dasd_hashlists[i], list)
                         if (tmp->devindex == devindex) {
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 2e655f466743..39c2281371b5 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -65,16 +65,16 @@ struct dasd_eckd_private {
 /* The ccw bus type uses this table to find devices that it sends to
  * dasd_eckd_probe */
 static struct ccw_device_id dasd_eckd_ids[] = {
-        { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), driver_info: 0x1},
-        { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), driver_info: 0x2},
-        { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), driver_info: 0x3},
-        { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), driver_info: 0x4},
-        { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), driver_info: 0x5},
-        { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), driver_info: 0x6},
-        { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), driver_info: 0x7},
-        { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), driver_info: 0x8},
-        { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), driver_info: 0x9},
-        { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), driver_info: 0xa},
+        { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), .driver_info = 0x1},
+        { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), .driver_info = 0x2},
+        { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), .driver_info = 0x3},
+        { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), .driver_info = 0x4},
+        { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), .driver_info = 0x5},
+        { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), .driver_info = 0x6},
+        { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), .driver_info = 0x7},
+        { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), .driver_info = 0x8},
+        { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), .driver_info = 0x9},
+        { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), .driver_info = 0xa},
         { /* end of list */ },
 };
 
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 808434d38526..e85015be109b 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -44,8 +44,8 @@ struct dasd_fba_private {
 };
 
 static struct ccw_device_id dasd_fba_ids[] = {
-        { CCW_DEVICE_DEVTYPE (0x6310, 0, 0x9336, 0), driver_info: 0x1},
-        { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3370, 0), driver_info: 0x2},
+        { CCW_DEVICE_DEVTYPE (0x6310, 0, 0x9336, 0), .driver_info = 0x1},
+        { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3370, 0), .driver_info = 0x2},
         { /* end of list */ },
 };
 
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 12c7d296eaa8..4c272b70f41a 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -84,9 +84,9 @@ void
 dasd_gendisk_free(struct dasd_device *device)
 {
         del_gendisk(device->gdp);
-        device->gdp->queue = 0;
+        device->gdp->queue = NULL;
         put_disk(device->gdp);
-        device->gdp = 0;
+        device->gdp = NULL;
 }
 
 /*
@@ -136,7 +136,7 @@ dasd_destroy_partitions(struct dasd_device * device)
          * device->bdev to lower the offline open_count limit again.
          */
         bdev = device->bdev;
-        device->bdev = 0;
+        device->bdev = NULL;
 
         /*
          * See fs/partition/check.c:delete_partition
@@ -145,7 +145,7 @@ dasd_destroy_partitions(struct dasd_device * device)
          */
         memset(&bpart, 0, sizeof(struct blkpg_partition));
         memset(&barg, 0, sizeof(struct blkpg_ioctl_arg));
-        barg.data = &bpart;
+        barg.data = (void __user *) &bpart;
         barg.op = BLKPG_DEL_PARTITION;
         for (bpart.pno = device->gdp->minors - 1; bpart.pno > 0; bpart.pno--)
                 ioctl_by_bdev(bdev, BLKPG, (unsigned long) &barg);
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index e97f5316ad2d..8fed3603e9ea 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -345,7 +345,7 @@ dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp)
         if (bdev != bdev->bd_contains)
                 // ro setting is not allowed for partitions
                 return -EINVAL;
-        if (get_user(intval, (int *)argp))
+        if (get_user(intval, (int __user *)argp))
                 return -EFAULT;
 
         set_disk_ro(bdev->bd_disk, intval);
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index f25c6d116f6f..2fa566fa6da4 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -693,7 +693,7 @@ raw3215_probe (struct ccw_device *cdev)
                                        GFP_KERNEL|GFP_DMA);
         if (raw->buffer == NULL) {
                 spin_lock(&raw3215_device_lock);
-                raw3215[line] = 0;
+                raw3215[line] = NULL;
                 spin_unlock(&raw3215_device_lock);
                 kfree(raw);
                 return -ENOMEM;
diff --git a/drivers/s390/char/ctrlchar.c b/drivers/s390/char/ctrlchar.c
index 0ea6f36a2527..d83eb6358bac 100644
--- a/drivers/s390/char/ctrlchar.c
+++ b/drivers/s390/char/ctrlchar.c
@@ -23,7 +23,7 @@ ctrlchar_handle_sysrq(void *tty)
         handle_sysrq(ctrlchar_sysrq_key, NULL, (struct tty_struct *) tty);
 }
 
-static DECLARE_WORK(ctrlchar_work, ctrlchar_handle_sysrq, 0);
+static DECLARE_WORK(ctrlchar_work, ctrlchar_handle_sysrq, NULL);
 #endif
 
 
diff --git a/drivers/s390/char/defkeymap.c b/drivers/s390/char/defkeymap.c
index ca15adb140d1..17027d918cf7 100644
--- a/drivers/s390/char/defkeymap.c
+++ b/drivers/s390/char/defkeymap.c
@@ -83,8 +83,8 @@ static u_short shift_ctrl_map[NR_KEYS] = {
 };
 
 ushort *key_maps[MAX_NR_KEYMAPS] = {
-        plain_map, shift_map, 0, 0,
-        ctrl_map, shift_ctrl_map,       0
+        plain_map, shift_map, NULL, NULL,
+        ctrl_map, shift_ctrl_map, NULL,
 };
 
 unsigned int keymap_count = 4;
@@ -145,7 +145,7 @@ char *func_table[MAX_NR_FUNC] = {
         func_buf + 97,
         func_buf + 103,
         func_buf + 109,
-        0,
+        NULL,
 };
 
 struct kbdiacr accent_table[MAX_DIACR] = {
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 6099c14de429..ef004d089712 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -236,7 +236,7 @@ fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq, struct irb *irb)
  * Process reads from fullscreen 3270.
  */
 static ssize_t
-fs3270_read(struct file *filp, char *data, size_t count, loff_t *off)
+fs3270_read(struct file *filp, char __user *data, size_t count, loff_t *off)
 {
         struct fs3270 *fp;
         struct raw3270_request *rq;
@@ -281,7 +281,7 @@ fs3270_read(struct file *filp, char *data, size_t count, loff_t *off)
  * Process writes to fullscreen 3270.
  */
 static ssize_t
-fs3270_write(struct file *filp, const char *data, size_t count, loff_t *off)
+fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *off)
 {
         struct fs3270 *fp;
         struct raw3270_request *rq;
@@ -338,10 +338,10 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
                 fp->write_command = arg;
                 break;
         case TUBGETI:
-                rc = put_user(fp->read_command, (char *) arg);
+                rc = put_user(fp->read_command, (char __user *) arg);
                 break;
         case TUBGETO:
-                rc = put_user(fp->write_command,(char *) arg);
+                rc = put_user(fp->write_command,(char __user *) arg);
                 break;
         case TUBGETMOD:
                 iocb.model = fp->view.model;
@@ -350,7 +350,7 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
                 iocb.pf_cnt = 24;
                 iocb.re_cnt = 20;
                 iocb.map = 0;
-                if (copy_to_user((char *) arg, &iocb,
+                if (copy_to_user((char __user *) arg, &iocb,
                                  sizeof(struct raw3270_iocb)))
                         rc = -EFAULT;
                 break;
@@ -479,7 +479,7 @@ fs3270_close(struct inode *inode, struct file *filp)
         struct fs3270 *fp;
 
         fp = filp->private_data;
-        filp->private_data = 0;
+        filp->private_data = NULL;
         if (fp) {
                 fp->fs_pid = 0;
                 raw3270_reset(&fp->view);
diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index 547ef906ae2c..3be06569180d 100644
--- a/drivers/s390/char/keyboard.c
+++ b/drivers/s390/char/keyboard.c
@@ -103,7 +103,7 @@ out_maps:
 out_kbd:
         kfree(kbd);
 out:
-        return 0;
+        return NULL;
 }
 
 void
@@ -304,7 +304,7 @@ kbd_keycode(struct kbd_data *kbd, unsigned int keycode)
                 if (kbd->sysrq) {
                         if (kbd->sysrq == K(KT_LATIN, '-')) {
                                 kbd->sysrq = 0;
-                                handle_sysrq(value, 0, kbd->tty);
+                                handle_sysrq(value, NULL, kbd->tty);
                                 return;
                         }
                         if (value == '-') {
@@ -363,7 +363,7 @@ do_kdsk_ioctl(struct kbd_data *kbd, struct kbentry __user *user_kbe,
                         /* disallocate map */
                         key_map = kbd->key_maps[tmp.kb_table];
                         if (key_map) {
-                            kbd->key_maps[tmp.kb_table] = 0;
+                            kbd->key_maps[tmp.kb_table] = NULL;
                             kfree(key_map);
                         }
                         break;
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index e95b56f810db..95e285b2e25c 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -555,7 +555,7 @@ raw3270_start_init(struct raw3270 *rp, struct raw3270_view *view,
 #ifdef CONFIG_TN3270_CONSOLE
         if (raw3270_registered == 0) {
                 spin_lock_irqsave(get_ccwdev_lock(view->dev->cdev), flags);
-                rq->callback = 0;
+                rq->callback = NULL;
                 rc = __raw3270_start(rp, view, rq);
                 if (rc == 0)
                         while (!raw3270_request_final(rq)) {
@@ -719,8 +719,8 @@ raw3270_size_device(struct raw3270 *rp)
                 rc = __raw3270_size_device_vm(rp);
         else
                 rc = __raw3270_size_device(rp);
-        raw3270_init_view.dev = 0;
-        rp->view = 0;
+        raw3270_init_view.dev = NULL;
+        rp->view = NULL;
         up(&raw3270_init_sem);
         if (rc == 0) {  /* Found something. */
                 /* Try to find a model. */
@@ -761,8 +761,8 @@ raw3270_reset_device(struct raw3270 *rp)
         rp->view = &raw3270_init_view;
         raw3270_init_view.dev = rp;
         rc = raw3270_start_init(rp, &raw3270_init_view, &rp->init_request);
-        raw3270_init_view.dev = 0;
-        rp->view = 0;
+        raw3270_init_view.dev = NULL;
+        rp->view = NULL;
         up(&raw3270_init_sem);
         return rc;
 }
@@ -934,7 +934,7 @@ raw3270_activate_view(struct raw3270_view *view)
         else if (!test_bit(RAW3270_FLAGS_READY, &rp->flags))
                 rc = -ENODEV;
         else {
-                oldview = 0;
+                oldview = NULL;
                 if (rp->view) {
                         oldview = rp->view;
                         oldview->fn->deactivate(oldview);
@@ -951,7 +951,7 @@ raw3270_activate_view(struct raw3270_view *view)
                                                 rp->view = nv;
                                                 if (nv->fn->activate(nv) == 0)
                                                         break;
-                                                rp->view = 0;
+                                                rp->view = NULL;
                                         }
                         }
                 }
@@ -975,7 +975,7 @@ raw3270_deactivate_view(struct raw3270_view *view)
         spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags);
         if (rp->view == view) {
                 view->fn->deactivate(view);
-                rp->view = 0;
+                rp->view = NULL;
                 /* Move deactivated view to end of list. */
                 list_del_init(&view->list);
                 list_add_tail(&view->list, &rp->view_list);
@@ -985,7 +985,7 @@ raw3270_deactivate_view(struct raw3270_view *view)
                                 rp->view = view;
                                 if (view->fn->activate(view) == 0)
                                         break;
-                                rp->view = 0;
+                                rp->view = NULL;
                         }
                 }
         }
@@ -1076,7 +1076,7 @@ raw3270_del_view(struct raw3270_view *view)
         spin_lock_irqsave(get_ccwdev_lock(rp->cdev), flags);
         if (rp->view == view) {
                 view->fn->deactivate(view);
-                rp->view = 0;
+                rp->view = NULL;
         }
         list_del_init(&view->list);
         if (!rp->view && test_bit(RAW3270_FLAGS_READY, &rp->flags)) {
@@ -1117,9 +1117,9 @@ raw3270_delete_device(struct raw3270 *rp)
 
         /* Disconnect from ccw_device. */
         cdev = rp->cdev;
-        rp->cdev = 0;
-        cdev->dev.driver_data = 0;
-        cdev->handler = 0;
+        rp->cdev = NULL;
+        cdev->dev.driver_data = NULL;
+        cdev->handler = NULL;
 
         /* Put ccw_device structure. */
         put_device(&cdev->dev);
@@ -1144,7 +1144,7 @@ raw3270_model_show(struct device *dev, struct device_attribute *attr, char *buf)
         return snprintf(buf, PAGE_SIZE, "%i\n",
                         ((struct raw3270 *) dev->driver_data)->model);
 }
-static DEVICE_ATTR(model, 0444, raw3270_model_show, 0);
+static DEVICE_ATTR(model, 0444, raw3270_model_show, NULL);
 
 static ssize_t
 raw3270_rows_show(struct device *dev, struct device_attribute *attr, char *buf)
@@ -1152,7 +1152,7 @@ raw3270_rows_show(struct device *dev, struct device_attribute *attr, char *buf)
         return snprintf(buf, PAGE_SIZE, "%i\n",
                         ((struct raw3270 *) dev->driver_data)->rows);
 }
-static DEVICE_ATTR(rows, 0444, raw3270_rows_show, 0);
+static DEVICE_ATTR(rows, 0444, raw3270_rows_show, NULL);
 
 static ssize_t
 raw3270_columns_show(struct device *dev, struct device_attribute *attr, char *buf)
@@ -1160,7 +1160,7 @@ raw3270_columns_show(struct device *dev, struct device_attribute *attr, char *bu
         return snprintf(buf, PAGE_SIZE, "%i\n",
                         ((struct raw3270 *) dev->driver_data)->cols);
 }
-static DEVICE_ATTR(columns, 0444, raw3270_columns_show, 0);
+static DEVICE_ATTR(columns, 0444, raw3270_columns_show, NULL);
 
 static struct attribute * raw3270_attrs[] = {
         &dev_attr_model.attr,
@@ -1296,7 +1296,7 @@ raw3270_remove (struct ccw_device *cdev)
         spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
         if (rp->view) {
                 rp->view->fn->deactivate(rp->view);
-                rp->view = 0;
+                rp->view = NULL;
         }
         while (!list_empty(&rp->view_list)) {
                 v = list_entry(rp->view_list.next, struct raw3270_view, list);
diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h
index b635bf8e7775..90beaa80a782 100644
--- a/drivers/s390/char/raw3270.h
+++ b/drivers/s390/char/raw3270.h
@@ -231,7 +231,7 @@ alloc_string(struct list_head *free_list, unsigned long len)
                 INIT_LIST_HEAD(&cs->update);
                 return cs;
         }
-        return 0;
+        return NULL;
 }
 
 static inline unsigned long
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index 48b4d30a7256..7b95dab913d0 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -1309,9 +1309,9 @@ static struct tape_discipline tape_discipline_34xx = {
 };
 
 static struct ccw_device_id tape_34xx_ids[] = {
-        { CCW_DEVICE_DEVTYPE(0x3480, 0, 0x3480, 0), driver_info: tape_3480},
-        { CCW_DEVICE_DEVTYPE(0x3490, 0, 0x3490, 0), driver_info: tape_3490},
-        { /* end of list */ }
+        { CCW_DEVICE_DEVTYPE(0x3480, 0, 0x3480, 0), .driver_info = tape_3480},
+        { CCW_DEVICE_DEVTYPE(0x3490, 0, 0x3490, 0), .driver_info = tape_3490},
+        { /* end of list */ },
 };
 
 static int
diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index f496f236b9c0..29718042c6c9 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -437,7 +437,7 @@ tty3270_rcl_add(struct tty3270 *tp, char *input, int len)
 {
         struct string *s;
 
-        tp->rcl_walk = 0;
+        tp->rcl_walk = NULL;
         if (len <= 0)
                 return;
         if (tp->rcl_nr >= tp->rcl_max) {
@@ -466,12 +466,12 @@ tty3270_rcl_backward(struct kbd_data *kbd)
                 else if (!list_empty(&tp->rcl_lines))
                         tp->rcl_walk = tp->rcl_lines.prev;
                 s = tp->rcl_walk ? 
-                        list_entry(tp->rcl_walk, struct string, list) : 0;
+                        list_entry(tp->rcl_walk, struct string, list) : NULL;
                 if (tp->rcl_walk) {
                         s = list_entry(tp->rcl_walk, struct string, list);
                         tty3270_update_prompt(tp, s->string, s->len);
                 } else
-                        tty3270_update_prompt(tp, 0, 0);
+                        tty3270_update_prompt(tp, NULL, 0);
                 tty3270_set_timer(tp, 1);
         }
         spin_unlock_bh(&tp->view.lock);
@@ -553,7 +553,7 @@ tty3270_read_tasklet(struct raw3270_request *rrq)
          * has to be emitted to the tty and for 0x6d the screen
          * needs to be redrawn.
          */
-        input = 0;
+        input = NULL;
         len = 0;
         if (tp->input->string[0] == 0x7d) {
                 /* Enter: write input to tty. */
@@ -567,7 +567,7 @@ tty3270_read_tasklet(struct raw3270_request *rrq)
                         tty3270_update_status(tp);
                 }
                 /* Clear input area. */
-                tty3270_update_prompt(tp, 0, 0);
+                tty3270_update_prompt(tp, NULL, 0);
                 tty3270_set_timer(tp, 1);
         } else if (tp->input->string[0] == 0x6d) {
                 /* Display has been cleared. Redraw. */
@@ -808,8 +808,8 @@ tty3270_release(struct raw3270_view *view)
         tp = (struct tty3270 *) view;
         tty = tp->tty;
         if (tty) {
-                tty->driver_data = 0;
-                tp->tty = tp->kbd->tty = 0;
+                tty->driver_data = NULL;
+                tp->tty = tp->kbd->tty = NULL;
                 tty_hangup(tty);
                 raw3270_put_view(&tp->view);
         }
@@ -948,8 +948,8 @@ tty3270_close(struct tty_struct *tty, struct file * filp)
                 return;
         tp = (struct tty3270 *) tty->driver_data;
         if (tp) {
-                tty->driver_data = 0;
-                tp->tty = tp->kbd->tty = 0;
+                tty->driver_data = NULL;
+                tp->tty = tp->kbd->tty = NULL;
                 raw3270_put_view(&tp->view);
         }
 }
@@ -1673,7 +1673,7 @@ tty3270_set_termios(struct tty_struct *tty, struct termios *old)
                 new = L_ECHO(tty) ? TF_INPUT: TF_INPUTN;
                 if (new != tp->inattr) {
                         tp->inattr = new;
-                        tty3270_update_prompt(tp, 0, 0);
+                        tty3270_update_prompt(tp, NULL, 0);
                         tty3270_set_timer(tp, 1);
                 }
         }
@@ -1759,7 +1759,7 @@ void
 tty3270_notifier(int index, int active)
 {
         if (active)
-                tty_register_device(tty3270_driver, index, 0);
+                tty_register_device(tty3270_driver, index, NULL);
         else
                 tty_unregister_device(tty3270_driver, index);
 }
@@ -1818,7 +1818,7 @@ tty3270_exit(void)
 
         raw3270_unregister_notifier(tty3270_notifier);
         driver = tty3270_driver;
-        tty3270_driver = 0;
+        tty3270_driver = NULL;
         tty_unregister_driver(driver);
         tty3270_del_views();
 }
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index c625b69ebd19..6cb23040954b 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -86,8 +86,8 @@ struct vmlogrdr_priv_t {
  */
 static int vmlogrdr_open(struct inode *, struct file *);
 static int vmlogrdr_release(struct inode *, struct file *);
-static ssize_t vmlogrdr_read (struct file *filp, char *data, size_t count,
-                               loff_t * ppos);
+static ssize_t vmlogrdr_read (struct file *filp, char __user *data,
+                              size_t count, loff_t * ppos);
 
 static struct file_operations vmlogrdr_fops = {
         .owner   = THIS_MODULE,
@@ -515,7 +515,7 @@ vmlogrdr_receive_data(struct vmlogrdr_priv_t *priv) {
 
 
 static ssize_t
-vmlogrdr_read (struct file *filp, char *data, size_t count, loff_t * ppos)
+vmlogrdr_read(struct file *filp, char __user *data, size_t count, loff_t * ppos)
 {
         int rc;
         struct vmlogrdr_priv_t * priv = filp->private_data;
diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c
index 5acc0ace3d7d..807320a41fa4 100644
--- a/drivers/s390/char/vmwatchdog.c
+++ b/drivers/s390/char/vmwatchdog.c
@@ -193,7 +193,7 @@ static int vmwdt_ioctl(struct inode *i, struct file *f,
                 return 0;
         case WDIOC_GETSTATUS:
         case WDIOC_GETBOOTSTATUS:
-                return put_user(0, (int *)arg);
+                return put_user(0, (int __user *)arg);
         case WDIOC_GETTEMP:
                 return -EINVAL;
         case WDIOC_SETOPTIONS:
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index c7319a07ba35..f26a2ee3aad8 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -319,7 +319,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
         if (!try_module_get(gdrv->owner))
                 return -EINVAL;
 
-        value = simple_strtoul(buf, 0, 0);
+        value = simple_strtoul(buf, NULL, 0);
         ret = count;
         if (value == 1)
                 ccwgroup_set_online(gdev);
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index e36ca27f5777..89320c1ad825 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -798,7 +798,7 @@ struct subchannel *
 cio_get_console_subchannel(void)
 {
         if (!console_subchannel_in_use)
-                return 0;
+                return NULL;
         return &console_subchannel;
 }
 
diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index 1c3e8e9012b0..0df3af1f08de 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -1140,7 +1140,7 @@ static struct attribute *cmf_attributes[] = {
         &dev_attr_avg_device_disconnect_time.attr,
         &dev_attr_avg_control_unit_queuing_time.attr,
         &dev_attr_avg_device_active_only_time.attr,
-        0,
+        NULL,
 };
 
 static struct attribute_group cmf_attr_group = {
@@ -1160,7 +1160,7 @@ static struct attribute *cmf_attributes_ext[] = {
         &dev_attr_avg_device_active_only_time.attr,
         &dev_attr_avg_device_busy_time.attr,
         &dev_attr_avg_initial_command_response_time.attr,
-        0,
+        NULL,
 };
 
 static struct attribute_group cmf_attr_group_ext = {
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 9db09870b2ae..585fa04233c3 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -100,7 +100,7 @@ ccw_uevent (struct device *dev, char **envp, int num_envp,
         if ((buffer_size - length <= 0) || (i >= num_envp))
                 return -ENOMEM;
 
-        envp[i] = 0;
+        envp[i] = NULL;
 
         return 0;
 }
@@ -1057,7 +1057,7 @@ get_ccwdev_by_busid(struct ccw_driver *cdrv, const char *bus_id)
                                  __ccwdev_check_busid);
         put_driver(drv);
 
-        return dev ? to_ccwdev(dev) : 0;
+        return dev ? to_ccwdev(dev) : NULL;
 }
 
 /************************** device driver handling ************************/
@@ -1082,7 +1082,7 @@ ccw_device_probe (struct device *dev)
         ret = cdrv->probe ? cdrv->probe(cdev) : -ENODEV;
 
         if (ret) {
-                cdev->drv = 0;
+                cdev->drv = NULL;
                 return ret;
         }
 
@@ -1113,7 +1113,7 @@ ccw_device_remove (struct device *dev)
                                  ret, cdev->dev.bus_id);
         }
         ccw_device_set_timeout(cdev, 0);
-        cdev->drv = 0;
+        cdev->drv = NULL;
         return 0;
 }
 
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index b70039af70d6..7c93a8798d23 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -2735,7 +2735,7 @@ qdio_free(struct ccw_device *cdev)
         QDIO_DBF_TEXT1(0,trace,dbf_text);
         QDIO_DBF_TEXT0(0,setup,dbf_text);
 
-        cdev->private->qdio_data = 0;
+        cdev->private->qdio_data = NULL;
 
         up(&irq_ptr->setting_up_sema);
 
diff --git a/drivers/s390/net/iucv.c b/drivers/s390/net/iucv.c
index 189a49275433..0e863df4027a 100644
--- a/drivers/s390/net/iucv.c
+++ b/drivers/s390/net/iucv.c
@@ -692,7 +692,7 @@ iucv_retrieve_buffer (void)
         iucv_debug(1, "entering");
         if (iucv_cpuid != -1) {
                 smp_call_function_on(iucv_retrieve_buffer_cpuid,
-                                     0, 0, 1, iucv_cpuid);
+                                     NULL, 0, 1, iucv_cpuid);
                 /* Release the cpu reserved by iucv_declare_buffer. */
                 smp_put_cpu(iucv_cpuid);
                 iucv_cpuid = -1;
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index 4caced21ac8c..103c41470bd2 100644
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -4804,7 +4804,7 @@ static struct qeth_cmd_buffer *
 qeth_get_setassparms_cmd(struct qeth_card *, enum qeth_ipa_funcs,
                          __u16, __u16, enum qeth_prot_versions);
 static int
-qeth_arp_query(struct qeth_card *card, char *udata)
+qeth_arp_query(struct qeth_card *card, char __user *udata)
 {
         struct qeth_cmd_buffer *iob;
         struct qeth_arp_query_info qinfo = {0, };
@@ -4937,7 +4937,7 @@ qeth_get_adapter_cmd(struct qeth_card *card, __u32 command, __u32 cmdlen)
  * function to send SNMP commands to OSA-E card
  */
 static int
-qeth_snmp_command(struct qeth_card *card, char *udata)
+qeth_snmp_command(struct qeth_card *card, char __user *udata)
 {
         struct qeth_cmd_buffer *iob;
         struct qeth_ipa_cmd *cmd;
@@ -7909,9 +7909,9 @@ qeth_set_online(struct ccwgroup_device *gdev)
 }
 
 static struct ccw_device_id qeth_ids[] = {
-        {CCW_DEVICE(0x1731, 0x01), driver_info:QETH_CARD_TYPE_OSAE},
-        {CCW_DEVICE(0x1731, 0x05), driver_info:QETH_CARD_TYPE_IQD},
-        {CCW_DEVICE(0x1731, 0x06), driver_info:QETH_CARD_TYPE_OSN},
+        {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
+        {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
+        {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
         {},
 };
 MODULE_DEVICE_TABLE(ccw, qeth_ids);
@@ -8380,7 +8380,7 @@ out:
 
 static struct notifier_block qeth_ip_notifier = {
         qeth_ip_event,
-        0
+        NULL,
 };
 
 #ifdef CONFIG_QETH_IPV6
@@ -8433,7 +8433,7 @@ out:
 
 static struct notifier_block qeth_ip6_notifier = {
         qeth_ip6_event,
-        0
+        NULL,
 };
 #endif
 
@@ -8460,7 +8460,7 @@ qeth_reboot_event(struct notifier_block *this, unsigned long event, void *ptr)
 
 static struct notifier_block qeth_reboot_notifier = {
         qeth_reboot_event,
-        0
+        NULL,
 };
 
 static int
diff --git a/drivers/s390/net/qeth_sys.c b/drivers/s390/net/qeth_sys.c
index 185a9cfbcbdc..001497bbea16 100644
--- a/drivers/s390/net/qeth_sys.c
+++ b/drivers/s390/net/qeth_sys.c
@@ -1755,7 +1755,7 @@ qeth_driver_group_store(struct device_driver *ddrv, const char *buf,
 }
 
 
-static DRIVER_ATTR(group, 0200, 0, qeth_driver_group_store);
+static DRIVER_ATTR(group, 0200, NULL, qeth_driver_group_store);
 
 static ssize_t
 qeth_driver_notifier_register_store(struct device_driver *ddrv, const char *buf,
@@ -1783,7 +1783,7 @@ qeth_driver_notifier_register_store(struct device_driver *ddrv, const char *buf,
         return count;
 }
 
-static DRIVER_ATTR(notifier_register, 0200, 0,
+static DRIVER_ATTR(notifier_register, 0200, NULL,
                    qeth_driver_notifier_register_store);
 
 int
diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c
index 72118ee68954..b8179c27ceb6 100644
--- a/drivers/s390/net/smsgiucv.c
+++ b/drivers/s390/net/smsgiucv.c
@@ -66,7 +66,7 @@ smsg_message_pending(iucv_MessagePending *eib, void *pgm_data)
                 return;
         }
         rc = iucv_receive(eib->ippathid, eib->ipmsgid, eib->iptrgcls,
-                          msg, len, 0, 0, 0);
+                          msg, len, NULL, NULL, NULL);
         if (rc == 0) {
                 msg[len] = 0;
                 EBCASC(msg, len);
@@ -122,7 +122,7 @@ smsg_unregister_callback(char *prefix, void (*callback)(char *from, char *str))
         struct smsg_callback *cb, *tmp;
 
         spin_lock(&smsg_list_lock);
-        cb = 0;
+        cb = NULL;
         list_for_each_entry(tmp, &smsg_list, list)
                 if (tmp->callback == callback &&
                     strcmp(tmp->prefix, prefix) == 0) {
@@ -139,7 +139,7 @@ smsg_exit(void)
 {
         if (smsg_handle > 0) {
                 cpcmd("SET SMSG OFF", NULL, 0, NULL);
-                iucv_sever(smsg_pathid, 0);
+                iucv_sever(smsg_pathid, NULL);
                 iucv_unregister_program(smsg_handle);
                 driver_unregister(&smsg_driver);
         }
@@ -162,19 +162,19 @@ smsg_init(void)
                 return rc;
         }
         smsg_handle = iucv_register_program("SMSGIUCV        ", "*MSG    ",
-                                            pgmmask, &smsg_ops, 0);
+                                            pgmmask, &smsg_ops, NULL);
         if (!smsg_handle) {
                 printk(KERN_ERR "SMSGIUCV: failed to register to iucv");
                 driver_unregister(&smsg_driver);
                 return -EIO;    /* better errno ? */
         }
-        rc = iucv_connect (&smsg_pathid, 255, 0, "*MSG    ", 0, 0, 0, 0,
-                           smsg_handle, 0);
+        rc = iucv_connect (&smsg_pathid, 255, NULL, "*MSG    ", NULL, 0,
+                           NULL, NULL, smsg_handle, NULL);
         if (rc) {
                 printk(KERN_ERR "SMSGIUCV: failed to connect to *MSG");
                 iucv_unregister_program(smsg_handle);
                 driver_unregister(&smsg_driver);
-                smsg_handle = 0;
+                smsg_handle = NULL;
                 return -EIO;
         }
         cpcmd("SET SMSG IUCV", NULL, 0, NULL);
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 6335f9229184..31db2b06faba 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -2227,7 +2227,7 @@ zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action,
         /* setup new FSF request */
         retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
                                      erp_action ? ZFCP_REQ_AUTO_CLEANUP : 0,
-                                     0, &lock_flags, &fsf_req);
+                                     NULL, &lock_flags, &fsf_req);
         if (retval < 0) {
                 ZFCP_LOG_INFO("error: Out of resources. Could not create an "
                               "exchange port data request for"
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 46e14f22ec18..671f4a6a5d18 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -44,30 +44,29 @@ struct scsi_transport_template *zfcp_transport_template;
 
 struct zfcp_data zfcp_data = {
         .scsi_host_template = {
-              name:                    ZFCP_NAME,
-              proc_name:               "zfcp",
-              proc_info:               NULL,
-              detect:                  NULL,
-              slave_alloc:             zfcp_scsi_slave_alloc,
-              slave_configure:         zfcp_scsi_slave_configure,
-              slave_destroy:           zfcp_scsi_slave_destroy,
-              queuecommand:            zfcp_scsi_queuecommand,
-              eh_abort_handler:        zfcp_scsi_eh_abort_handler,
-              eh_device_reset_handler: zfcp_scsi_eh_device_reset_handler,
-              eh_bus_reset_handler:    zfcp_scsi_eh_bus_reset_handler,
-              eh_host_reset_handler:   zfcp_scsi_eh_host_reset_handler,
-                                       /* FIXME(openfcp): Tune */
-              can_queue:               4096,
-              this_id:                 -1,
-              /*
-               * FIXME:
-               * one less? can zfcp_create_sbale cope with it?
-               */
-              sg_tablesize:            ZFCP_MAX_SBALES_PER_REQ,
-              cmd_per_lun:             1,
-              unchecked_isa_dma:       0,
-              use_clustering:          1,
-              sdev_attrs:              zfcp_sysfs_sdev_attrs,
+                .name                   = ZFCP_NAME,
+                .proc_name              = "zfcp",
+                .proc_info              = NULL,
+                .detect                 = NULL,
+                .slave_alloc            = zfcp_scsi_slave_alloc,
+                .slave_configure        = zfcp_scsi_slave_configure,
+                .slave_destroy          = zfcp_scsi_slave_destroy,
+                .queuecommand           = zfcp_scsi_queuecommand,
+                .eh_abort_handler       = zfcp_scsi_eh_abort_handler,
+                .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
+                .eh_bus_reset_handler   = zfcp_scsi_eh_bus_reset_handler,
+                .eh_host_reset_handler  = zfcp_scsi_eh_host_reset_handler,
+                .can_queue              = 4096,
+                .this_id                = -1,
+                /*
+                 * FIXME:
+                 * one less? can zfcp_create_sbale cope with it?
+                 */
+                .sg_tablesize           = ZFCP_MAX_SBALES_PER_REQ,
+                .cmd_per_lun            = 1,
+                .unchecked_isa_dma      = 0,
+                .use_clustering         = 1,
+                .sdev_attrs             = zfcp_sysfs_sdev_attrs,
         },
         .driver_version = ZFCP_VERSION,
         /* rest initialised with zeros */
diff --git a/include/asm-s390/ccwdev.h b/include/asm-s390/ccwdev.h
index 12456cb2f882..58c70acffc73 100644
--- a/include/asm-s390/ccwdev.h
+++ b/include/asm-s390/ccwdev.h
@@ -63,7 +63,7 @@ ccw_device_id_match(const struct ccw_device_id *array,
                 return id;
         }
 
-        return 0;
+        return NULL;
 }
 
 /* The struct ccw device is our replacement for the globally accessible
diff --git a/include/asm-s390/pgalloc.h b/include/asm-s390/pgalloc.h
index 3002fda89d33..a78e853e0dd5 100644
--- a/include/asm-s390/pgalloc.h
+++ b/include/asm-s390/pgalloc.h
@@ -142,7 +142,7 @@ pte_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
         pte_t *pte = pte_alloc_one_kernel(mm, vmaddr);
         if (pte)
                 return virt_to_page(pte);
-        return 0;
+        return NULL;
 }
 
 static inline void pte_free_kernel(pte_t *pte)