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| author | Takashi Iwai <tiwai@suse.de> | 2008-08-13 15:40:53 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-08-15 11:48:01 +0200 |
| commit | 7a9b8063cf7d78d7de4f2555357101087548c699 (patch) | |
| tree | e52206406078301f572057597ba45eb0a7a413ca /Documentation/sound | |
| parent | ALSA: Add missing description of usb-audio parameters (diff) | |
| download | linux-7a9b8063cf7d78d7de4f2555357101087548c699.tar.xz linux-7a9b8063cf7d78d7de4f2555357101087548c699.zip | |
ALSA: usb-audio - Add ignore_ctl_error parameter
Added the ignore_ctl_error parameter to enable/disable the control-error
handling for mixer interfaces. It was a hard-coded ifdef, and now you
can change it more easily.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index 68bbc25ff39e..b33e030509fb 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -1983,6 +1983,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. device_setup - Device specific magic number (optional) - Influence depends on the device - Default: 0x0000 + ignore_ctl_error - Ignore any USB-controller regarding mixer + interface (default: no) This module supports multiple devices, autoprobe and hotplugging. @@ -1991,6 +1993,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. check. NB: async_unlink=0 would cause Oops. It remains just for debugging purpose (if any). + NB: ignore_ctl_error=1 may help when you get an error at accessing + the mixer element such as URB error -22. This happens on some + buggy USB device or the controller. Module snd-usb-caiaq -------------------- |