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x86: change x86 machine check handler to use unlocked_ioctl instead 

The machine check handler registers ioctl handler that is called
with the BKL held. Changing to register unlocked_ioctl instead.
Also mce ioctl handler does not seem to need any lock protection.

To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org

Change the Machine check handler to use unlocked_ioctl instead of
ioctl handler. Also the mce ioctl handler does not need any lock
protection.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Nikanth Karthikesan 2008-01-30 13:32:59 +01:00 committed by Ingo Molnar
parent f29192320f
commit c68461b67d
1 changed files with 2 additions and 3 deletions
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5
arch/x86/kernel/cpu/mcheck/mce_64.c
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@ -634,8 +634,7 @@ static unsigned int mce_poll(struct file *file, poll_table *wait)
return 0;
}
static int mce_ioctl(struct inode *i, struct file *f,unsigned int cmd,
unsigned long arg)
static long mce_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
{
int __user *p = (int __user *)arg;
@ -664,7 +663,7 @@ static const struct file_operations mce_chrdev_ops = {
.release = mce_release,
.read = mce_read,
.poll = mce_poll,
.ioctl = mce_ioctl,
.unlocked_ioctl = mce_ioctl,
};
static struct miscdevice mce_log_device = {