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path: root/drivers/char/apm-emulation.c
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Diffstat (limited to 'drivers/char/apm-emulation.c')
-rw-r--r--drivers/char/apm-emulation.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index 4f568cb9af3..033e1505fca 100644
--- a/drivers/char/apm-emulation.c
+++ b/drivers/char/apm-emulation.c
@@ -265,8 +265,8 @@ static unsigned int apm_poll(struct file *fp, poll_table * wait)
* Only when everyone who has opened /dev/apm_bios with write permission
* has acknowledge does the actual suspend happen.
*/
-static int
-apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
+static long
+apm_ioctl(struct file *filp, u_int cmd, u_long arg)
{
struct apm_user *as = filp->private_data;
int err = -EINVAL;
@@ -274,6 +274,7 @@ apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
if (!as->suser || !as->writer)
return -EPERM;
+ lock_kernel();
switch (cmd) {
case APM_IOC_SUSPEND:
mutex_lock(&state_lock);
@@ -334,6 +335,7 @@ apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
mutex_unlock(&state_lock);
break;
}
+ unlock_kernel();
return err;
}
@@ -397,7 +399,7 @@ static const struct file_operations apm_bios_fops = {
.owner = THIS_MODULE,
.read = apm_read,
.poll = apm_poll,
- .ioctl = apm_ioctl,
+ .unlocked_ioctl = apm_ioctl,
.open = apm_open,
.release = apm_release,
};