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| author | Clemens Ladisch <clemens@ladisch.de> | 2013-01-31 21:39:17 +0100 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2013-06-27 21:59:47 +0200 |
| commit | 8f898e92aea2c24c7f379ee265d178f69ebb9c07 (patch) | |
| tree | 6877a827d7541f0a3c779cd298bd65a69c550e06 /sound/usb/card.h | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
| download | linux-8f898e92aea2c24c7f379ee265d178f69ebb9c07.tar.bz2 | |
ALSA: usb-audio: store protocol version in struct audioformat
Instead of reading bInterfaceProtocol from the descriptor whenever it's
needed, store this value in the audioformat structure. Besides
simplifying some code, this will allow us to correctly handle vendor-
specific devices where the descriptors are marked with other values.
Signed-off-by: Clemens Ladisch <clemens@ladisch.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 bf2889a2cae5..5ecacaa90b53 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -21,6 +21,7 @@ struct audioformat { unsigned char endpoint; /* endpoint */ unsigned char ep_attr; /* endpoint attributes */ unsigned char datainterval; /* log_2 of data packet interval */ + unsigned char protocol; /* UAC_VERSION_1/2 */ unsigned int maxpacksize; /* max. packet size */ unsigned int rates; /* rate bitmasks */ unsigned int rate_min, rate_max; /* min/max rates */ |