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Subject[PATCH 3.16 017/125] ALSA: usb-audio: Adjust Gamecom 780 volume level
Date
3.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Paul S McSpadden <fisch602@gmail.com>

commit 542baf94ec3c5526955b4c9fd899c7f30fae4ebe upstream.

Original patch fixed the original problem, but the sound was far too low
for most users. This patch references a compare matrix to allow the
volume levels to act normally. I personally tested this patch myself,
and volume levels returned to normal. Please see this discussion for
more details: https://bugzilla.kernel.org/show_bug.cgi?id=65251

Signed-off-by: Paul S McSpadden <fisch602@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
sound/usb/quirks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -670,7 +670,7 @@ static int snd_usb_gamecon780_boot_quirk
/* set the initial volume and don't change; other values are either
* too loud or silent due to firmware bug (bko#65251)
*/
- u8 buf[2] = { 0x74, 0xdc };
+ u8 buf[2] = { 0x74, 0xe3 };
return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
UAC_FU_VOLUME << 8, 9 << 8, buf, 2);



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