UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ALSA: usb-audio: Trust fields given in the quirk 

The maxpacksize field is given in some quirks, but it gets ignored (in
favour of wMaxPacketSize from the first endpoint.) This patch favours
the one in the quirk.

Digidesign Mbox and Mbox 2 are the only affected quirks and the devices
are assumed to be working without this patch. So for safety against the
values in the quirk being incorrect, remove them.

The datainterval is also ignored but there are not currently any quirks
which choose to override this.

Cc: Damien Zammit <damien@zamaudio.com>
Cc: Chris J Arges <christopherarges@gmail.com>
Signed-off-by: Mark Hills <mark@xwax.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mark Hills 2013-03-17 11:07:54 +00:00 committed by Takashi Iwai
parent 5e212332cc
commit 59ea586f54
2 changed files with 4 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sound/usb/quirks-table.h
View File

@ -3036,7 +3036,6 @@ YAMAHA_DEVICE(0x7010, "UB99"),
.attributes = UAC_EP_CS_ATTR_SAMPLE_RATE,
.endpoint = 0x02,
.ep_attr = 0x01,
.maxpacksize = 0x130,
.rates = SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000,
.rate_min = 44100,
@ -3084,7 +3083,6 @@ YAMAHA_DEVICE(0x7010, "UB99"),
.attributes = 0x00,
.endpoint = 0x03,
.ep_attr = USB_ENDPOINT_SYNC_ASYNC,
.maxpacksize = 0x128,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
@ -3110,7 +3108,6 @@ YAMAHA_DEVICE(0x7010, "UB99"),
.attributes = UAC_EP_CS_ATTR_SAMPLE_RATE,
.endpoint = 0x85,
.ep_attr = USB_ENDPOINT_SYNC_SYNC,
.maxpacksize = 0x128,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,

6
sound/usb/quirks.c
View File

@ -165,8 +165,10 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
return -EINVAL;
}
alts = &iface->altsetting[fp->altset_idx];
fp->datainterval = snd_usb_parse_datainterval(chip, alts);
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
if (fp->datainterval == 0)
fp->datainterval = snd_usb_parse_datainterval(chip, alts);
if (fp->maxpacksize == 0)
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
usb_set_interface(chip->dev, fp->iface, 0);
snd_usb_init_pitch(chip, fp->iface, alts, fp);
snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);