compat: generic compat get/settimeofday

Nothing arch specific in get/settimeofday.  The details of the timeval
conversion varied a little from arch to arch, but all with the same
results.

Also add an extern declaration for sys_tz to linux/time.h because externs
in .c files are fowned upon.  I'll kill the externs in various other files
in a sparate patch.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: David S. Miller <davem@davemloft.net> [ sparc bits ]
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 2 insertions, 60 deletions

diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c
index 2c3af17e049..0838155b7a8 100644
--- a/arch/parisc/kernel/sys_parisc32.c
+++ b/arch/parisc/kernel/sys_parisc32.c
@@ -179,64 +179,6 @@ asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
         return ret;
 }
 
-static int
-put_compat_timeval(struct compat_timeval __user *u, struct timeval *t)
-{
-        struct compat_timeval t32;
-        t32.tv_sec = t->tv_sec;
-        t32.tv_usec = t->tv_usec;
-        return copy_to_user(u, &t32, sizeof t32);
-}
-
-static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
-{
-        long usec;
-
-        if (__get_user(o->tv_sec, &i->tv_sec))
-                return -EFAULT;
-        if (__get_user(usec, &i->tv_usec))
-                return -EFAULT;
-        o->tv_nsec = usec * 1000;
-        return 0;
-}
-
-asmlinkage int
-sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
-{
-    extern void do_gettimeofday(struct timeval *tv);
-
-    if (tv) {
-            struct timeval ktv;
-            do_gettimeofday(&ktv);
-            if (put_compat_timeval(tv, &ktv))
-                    return -EFAULT;
-    }
-    if (tz) {
-            extern struct timezone sys_tz;
-            if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
-                    return -EFAULT;
-    }
-    return 0;
-}
-
-asmlinkage 
-int sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
-{
-        struct timespec kts;
-        struct timezone ktz;
-
-        if (tv) {
-                if (get_ts32(&kts, tv))
-                        return -EFAULT;
-        }
-        if (tz) {
-                if (copy_from_user(&ktz, tz, sizeof(ktz)))
-                        return -EFAULT;
-        }
-
-        return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
-}
-
 /*** copied from mips64 ***/
 /*
  * Ooo, nasty.  We need here to frob 32-bit unsigned longs to
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 6b5ac38f5a9..c7e59f54881 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -149,8 +149,8 @@
         ENTRY_COMP(getrlimit)
         ENTRY_COMP(getrusage)
         /* struct timeval and timezone are maybe?? consistent wide and narrow */
-        ENTRY_DIFF(gettimeofday)
-        ENTRY_DIFF(settimeofday)
+        ENTRY_COMP(gettimeofday)
+        ENTRY_COMP(settimeofday)
         ENTRY_SAME(getgroups)           /* 80 */
         ENTRY_SAME(setgroups)
         /* struct socketaddr... */