hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier

[linux-2.6-omap-h63xx.git] / kernel / posix-timers.c

diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index d71ed09fe1dddd985e79f882ff30dd26bf1d28a2..d11f579d189a1b75f753addcdfba961f7561b74b 100644 (file)
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -981,9 +981,20 @@ sys_clock_getres(const clockid_t which_clock, struct timespec __user *tp)
 static int common_nsleep(const clockid_t which_clock, int flags,
                         struct timespec *tsave, struct timespec __user *rmtp)
 {
-       return hrtimer_nanosleep(tsave, rmtp, flags & TIMER_ABSTIME ?
-                                HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
-                                which_clock);
+       struct timespec rmt;
+       int ret;
+
+       ret = hrtimer_nanosleep(tsave, rmtp ? &rmt : NULL,
+                               flags & TIMER_ABSTIME ?
+                               HRTIMER_MODE_ABS : HRTIMER_MODE_REL,
+                               which_clock);
+
+       if (ret && rmtp) {
+               if (copy_to_user(rmtp, &rmt, sizeof(*rmtp)))
+                       return -EFAULT;
+       }
+
+       return ret;
 }
 
 asmlinkage long