[alsa-devel] [PATCH 1/3 v4] ALSA: usb-audio: Move mutex define to more general location

[Damien Zammit]

Allow quirks to lock/unlock the usb audio register mutex by moving
its definition to usbaudio.h

Signed-off-by: Damien Zammit <damien at zamaudio.com>
---
 sound/usb/card.c     | 1 -
 sound/usb/usbaudio.h | 2 ++
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/usb/card.c b/sound/usb/card.c
index 1fab977..d71025b 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -106,7 +106,6 @@ MODULE_PARM_DESC(autoclock, "Enable auto-clock selection for UAC2 devices (defau
  * the all interfaces on the same card as one sound device.
  */
 
-static DEFINE_MUTEX(register_mutex);
 static struct snd_usb_audio *usb_chip[SNDRV_CARDS];
 static struct usb_driver usb_audio_driver;
 
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 91d0380..229978f 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -115,4 +115,6 @@ struct snd_usb_audio_quirk {
 #define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
 #define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
 
+static DEFINE_MUTEX(register_mutex);
+
 #endif /* __USBAUDIO_H */
-- 
1.9.1