From 34f3c89fda4fba9fe689db22253ca8db2f5e6386 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 15 Oct 2012 12:16:02 +0200 Subject: ALSA: usb-audio: Use rwsem for disconnect protection Replace mutex with rwsem for codec->shutdown protection so that concurrent accesses are allowed. Also add the protection to snd_usb_autosuspend() and snd_usb_autoresume(), too. Reported-by: Matthieu CASTET Cc: Signed-off-by: Takashi Iwai --- sound/usb/usbaudio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/usb/usbaudio.h') diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index b8233ebe250f..ef42797f56fb 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -37,7 +37,7 @@ struct snd_usb_audio { struct usb_interface *pm_intf; u32 usb_id; struct mutex mutex; - struct mutex shutdown_mutex; + struct rw_semaphore shutdown_rwsem; unsigned int shutdown:1; unsigned int probing:1; unsigned int autosuspended:1; -- cgit v1.2.3-58-ga151