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| author | Julian Scheel <julian@jusst.de> | 2015-08-14 17:14:45 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-08-14 17:26:50 +0300 |
| commit | bc18e31c3042f14fa5f2ff5c21136e2fdf4140f8 (patch) | |
| tree | 31513402256a76135200a39b0db449d93df3dc42 /sound/usb/mixer.h | |
| parent | 41450b1b5ba101bf470b4fdf0407b30696e86bd3 (diff) | |
| download | linux-bc18e31c3042f14fa5f2ff5c21136e2fdf4140f8.tar.xz | |
ALSA: usb-audio: Fix parameter block size for UAC2 control requests
USB Audio Class version 2.0 supports three different parameter block sizes for
CUR requests, which are 1 byte (5.2.3.1 Layout 1 Parameter Block), 2 bytes
(5.2.3.2 Layout 2 Parameter Block) and 4 bytes (5.2.3.3 Layout 3 Parameter
Block). Use the correct size according to the specific control as it was
already done for UACv1. The allocated block size for control requests is
increased to support the 4 byte worst case.
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer.h')
| -rw-r--r-- | sound/usb/mixer.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h index d3268f0ee2b3..3417ef347e40 100644 --- a/sound/usb/mixer.h +++ b/sound/usb/mixer.h @@ -33,6 +33,8 @@ enum { USB_MIXER_U8, USB_MIXER_S16, USB_MIXER_U16, + USB_MIXER_S32, + USB_MIXER_U32, }; typedef void (*usb_mixer_elem_dump_func_t)(struct snd_info_buffer *buffer, |