From: Julia Lawall <julia@xxxxxxx> It is not clear how to share the unlock in the case where the structure containing the lock has to be freed. So the unlock is now duplicated, with one copy moved before the free. The unlock label furthermore is no longer useful and is thus deleted. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,e; identifier f; iterator I; statement S; @@ *kfree(x); ... when != &x when != x = e when != I(x,...) S *x->f // </smpl> Signed-off-by: Julia Lawall <julia@xxxxxxx> --- drivers/media/radio/si470x/radio-si470x-usb.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c index a96e1b9..a0a79c7 100644 --- a/drivers/media/radio/si470x/radio-si470x-usb.c +++ b/drivers/media/radio/si470x/radio-si470x-usb.c @@ -590,8 +590,9 @@ int si470x_fops_release(struct file *file) video_unregister_device(radio->videodev); kfree(radio->int_in_buffer); kfree(radio->buffer); + mutex_unlock(&radio->disconnect_lock); kfree(radio); - goto unlock; + goto done; } /* cancel read processes */ @@ -601,7 +602,6 @@ int si470x_fops_release(struct file *file) retval = si470x_stop(radio); usb_autopm_put_interface(radio->intf); } -unlock: mutex_unlock(&radio->disconnect_lock); done: return retval; -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
