[PATCH] x86_64: Fix ioctl compat code for /dev/rtc

RTC_IRQP_SET/RTC_EPOCH_SET don't take a pointer to an argument, but the
argument itself.  This actually simplifies the code and makes it work.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 11 deletions

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 057e60217fc5..537ac70edfe5 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -2531,18 +2531,9 @@ static int rtc_ioctl(unsigned fd, unsigned cmd, unsigned long arg)
                 val32 = kval;
                 return put_user(val32, (unsigned int __user *)arg);
         case RTC_IRQP_SET32:
+                return sys_ioctl(fd, RTC_IRQP_SET, arg); 
         case RTC_EPOCH_SET32:
-                ret = get_user(val32, (unsigned int __user *)arg);
-                if (ret)
-                        return ret;
-                kval = val32;
-
-                set_fs(KERNEL_DS);
-                ret = sys_ioctl(fd, (cmd == RTC_IRQP_SET32) ?
-                                RTC_IRQP_SET : RTC_EPOCH_SET,
-                                (unsigned long)&kval);
-                set_fs(oldfs);
-                return ret;
+                return sys_ioctl(fd, RTC_EPOCH_SET, arg);
         default:
                 /* unreached */
                 return -ENOIOCTLCMD;