diff options
Diffstat (limited to 'arch/x86/kernel/cpu/mce/dev-mcelog.c')
| -rw-r--r-- | arch/x86/kernel/cpu/mce/dev-mcelog.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/arch/x86/kernel/cpu/mce/dev-mcelog.c b/arch/x86/kernel/cpu/mce/dev-mcelog.c index af44fd5dbd7c..8d023239ce18 100644 --- a/arch/x86/kernel/cpu/mce/dev-mcelog.c +++ b/arch/x86/kernel/cpu/mce/dev-mcelog.c @@ -264,15 +264,8 @@ static long mce_chrdev_ioctl(struct file *f, unsigned int cmd, return put_user(sizeof(struct mce), p); case MCE_GET_LOG_LEN: return put_user(mcelog->len, p); - case MCE_GETCLEAR_FLAGS: { - unsigned flags; - - do { - flags = mcelog->flags; - } while (cmpxchg(&mcelog->flags, flags, 0) != flags); - - return put_user(flags, p); - } + case MCE_GETCLEAR_FLAGS: + return put_user(xchg(&mcelog->flags, 0), p); default: return -ENOTTY; } |