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| author | Clemens Ladisch <clemens@ladisch.de> | 2014-05-01 12:20:22 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-05-02 18:21:55 +0200 |
| commit | 7040b6d1febfdbd9c1595efb751d492cd2503f96 (patch) | |
| tree | 709e4176f252d31cd6af68337efc0a16ebd8754d /sound/usb/card.h | |
| parent | 1ee23fe07ee83a38ecee927e701f762888ada942 (diff) | |
| download | linux-7040b6d1febfdbd9c1595efb751d492cd2503f96.tar.bz2 | |
ALSA: usb-audio: work around corrupted TEAC UD-H01 feedback data
The TEAC UD-H01 firmware sends wrong feedback frequency values, thus
causing the PC to send the samples at a wrong rate, which results in
clicks and crackles in the output.
Add a workaround to detect and fix the corruption.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
[mick37@gmx.de: use sender->udh01_fb_quirk rather than
ep->udh01_fb_quirk in snd_usb_handle_sync_urb()]
Reported-and-tested-by: Mick <mick37@gmx.de>
Reported-and-tested-by: Andrea Messa <andr.messa@tiscali.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/card.h')
| -rw-r--r-- | sound/usb/card.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/card.h b/sound/usb/card.h index 9867ab866857..97acb906acc2 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -92,6 +92,7 @@ struct snd_usb_endpoint { unsigned int curframesize; /* current packet size in frames (for capture) */ unsigned int syncmaxsize; /* sync endpoint packet size */ unsigned int fill_max:1; /* fill max packet size always */ + unsigned int udh01_fb_quirk:1; /* corrupted feedback data */ unsigned int datainterval; /* log_2 of data packet interval */ unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */ unsigned char silence_value; |