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| author | Johan Hovold <johan@kernel.org> | 2021-05-21 16:37:42 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-05-21 17:19:22 +0300 |
| commit | 51cb8e206afd463e66f16869e5ddc95bef107142 (patch) | |
| tree | 99a46a052b6b6998f2962cfe59b9ea5144655132 /sound/usb/format.c | |
| parent | 05ca447630334c323c9e2b788b61133ab75d60d3 (diff) | |
| download | linux-51cb8e206afd463e66f16869e5ddc95bef107142.tar.xz | |
ALSA: usb-audio: fix control-request direction
The direction of the pipe argument must match the request-type direction
bit or control requests may fail depending on the host-controller-driver
implementation.
Fix the UAC2_CS_CUR request which erroneously used usb_sndctrlpipe().
Fixes: 93db51d06b32 ("ALSA: usb-audio: Check valid altsetting at parsing rates for UAC2/3")
Cc: stable@vger.kernel.org # 5.10
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210521133742.18098-1-johan@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/format.c')
| -rw-r--r-- | sound/usb/format.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/format.c b/sound/usb/format.c index e6ff317a6785..2287f8c65315 100644 --- a/sound/usb/format.c +++ b/sound/usb/format.c @@ -436,7 +436,7 @@ static bool check_valid_altsetting_v2v3(struct snd_usb_audio *chip, int iface, if (snd_BUG_ON(altsetting >= 64 - 8)) return false; - err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, + err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR, USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, UAC2_AS_VAL_ALT_SETTINGS << 8, iface, &raw_data, sizeof(raw_data)); |