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ALSA: usb-audio: Use snd_usb_ctl_msg() for Native Instruments quirk 

snd_nativeinstruments_control_get() uses a stack as a buffer for
usb_control_msg(), but it's basically not allowed.  Replace the call
with a safer helper, snd_usb_ctl_msg(), instead.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-11-20 21:39:14 +01:00
parent 6676f3081f
commit 01cb156edb
1 changed files with 2 additions and 2 deletions
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4
sound/usb/mixer_quirks.c
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@ -593,10 +593,10 @@ static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol,
if (mixer->chip->shutdown)
ret = -ENODEV;
else
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), bRequest,
ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), bRequest,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
0, wIndex,
&tmp, sizeof(tmp), 1000);
&tmp, sizeof(tmp));
up_read(&mixer->chip->shutdown_rwsem);
if (ret < 0) {