Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-10 22:21:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

ALSA: usb-audio: proc: use found syncmaxsize to determine feedback format

Browse Source 
freqshift is only set for the data endpoint and syncmaxsize is only set
for the sync endpoint. This results in a syncmaxsize of zero used in the
proc output feedback format calculation, which gives a feedback format
incorrectly shown as 8.16 for UAC2 devices.

As neither the data nor the sync endpoint gives all the relevant
content, output the two combined.

Also remove the sync_endpoint "packet size" which is always zero
and the sync_endpoint "momentary freq" which is constant.

Tested with UAC2 async and UAC1 adaptive, not tested with UAC1 async.

Reported-by: B. Zhang <bb.zhang@free.fr>
Signed-off-by: Torstein Hegge <hegge@resisty.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Torstein Hegge 2013-05-16 20:26:17 +02:00 committed by Takashi Iwai
parent 436c4a0cfb
commit e6135fe960
1 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
sound/usb/proc.c
View File

@ -116,21 +116,22 @@ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct s
}
static void proc_dump_ep_status(struct snd_usb_substream *subs,
struct snd_usb_endpoint *ep,
struct snd_usb_endpoint *data_ep,
struct snd_usb_endpoint *sync_ep,
struct snd_info_buffer *buffer)
{
if (!ep)
if (!data_ep)
return;
snd_iprintf(buffer, " Packet Size = %d\n", ep->curpacksize);
snd_iprintf(buffer, " Packet Size = %d\n", data_ep->curpacksize);
snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
subs->speed == USB_SPEED_FULL
? get_full_speed_hz(ep->freqm)
: get_high_speed_hz(ep->freqm),
ep->freqm >> 16, ep->freqm & 0xffff);
if (ep->freqshift != INT_MIN) {
int res = 16 - ep->freqshift;
? get_full_speed_hz(data_ep->freqm)
: get_high_speed_hz(data_ep->freqm),
data_ep->freqm >> 16, data_ep->freqm & 0xffff);
if (sync_ep && data_ep->freqshift != INT_MIN) {
int res = 16 - data_ep->freqshift;
snd_iprintf(buffer, " Feedback Format = %d.%d\n",
(ep->syncmaxsize > 3 ? 32 : 24) - res, res);
(sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res);
}
}
@ -140,8 +141,7 @@ static void proc_dump_substream_status(struct snd_usb_substream *subs, struct sn
snd_iprintf(buffer, " Status: Running\n");
snd_iprintf(buffer, " Interface = %d\n", subs->interface);
snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx);
proc_dump_ep_status(subs, subs->data_endpoint, buffer);
proc_dump_ep_status(subs, subs->sync_endpoint, buffer);
proc_dump_ep_status(subs, subs->data_endpoint, subs->sync_endpoint, buffer);
} else {
snd_iprintf(buffer, " Status: Stop\n");
}