[S390] Fix sparse warnings.

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

11 files changed, 31 insertions, 26 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);
 }