@@ -506,6 +506,7 @@ int lirc_dev_fop_close(struct inode *inode, struct file *file)
{
struct irctl *ir = irctls[iminor(inode)];
struct cdev *cdev;
+ int ret;
if (!ir) {
printk(KERN_ERR "%s: called with invalid irctl\n", __func__);
@@ -516,7 +517,8 @@ int lirc_dev_fop_close(struct inode *inode, struct file *file)
dev_dbg(ir->d.dev, LOGHEAD "close called\n", ir->d.name, ir->d.minor);
- WARN_ON(mutex_lock_killable(&lirc_dev_lock));
+ ret = mutex_lock_killable(&lirc_dev_lock);
+ WARN_ON(ret);
rc_close(ir->d.rdev);
@@ -532,7 +534,8 @@ int lirc_dev_fop_close(struct inode *inode, struct file *file)
kfree(ir);
}
- mutex_unlock(&lirc_dev_lock);
+ if (!ret)
+ mutex_unlock(&lirc_dev_lock);
return 0;
}
We can only unlock if mutex_lock() succeeds. Fixes the following warning: drivers/media/rc/lirc_dev.c:535 lirc_dev_fop_close() error: double unlock 'mutex:&lirc_dev_lock' Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> --- drivers/media/rc/lirc_dev.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)