diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2006-05-18 09:35:15 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-06-22 21:33:47 +0200 |
| commit | faf8d11743961c720c85be191f8a08c00e5c5d60 (patch) | |
| tree | c769a20e29e8fa2f43c4f01e410ed502bf9ecdef /sound | |
| parent | 474167d646cb2147b9fcd7bacf5cdf8177ed43c4 (diff) | |
| download | lwn-faf8d11743961c720c85be191f8a08c00e5c5d60.tar.gz lwn-faf8d11743961c720c85be191f8a08c00e5c5d60.zip | |
[ALSA] usb-audio: add workaround for CSR Bluetooth Headphones (Saitek A-250)
Some devices don't have the required class-specific endpoint descriptors.
Instead of making this case an error, this patch makes the driver guess the
endpoint attributes.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/usbaudio.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 8100516e1f79..770642a5953e 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -2627,9 +2627,10 @@ static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no) if (!csep && altsd->bNumEndpoints >= 2) csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) { - snd_printk(KERN_ERR "%d:%u:%d : no or invalid class specific endpoint descriptor\n", + snd_printk(KERN_WARN "%d:%u:%d : no or invalid" + " class specific endpoint descriptor\n", dev->devnum, iface_no, altno); - continue; + csep = NULL; } fp = kmalloc(sizeof(*fp), GFP_KERNEL); @@ -2648,7 +2649,7 @@ static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no) if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) * (fp->maxpacksize & 0x7ff); - fp->attributes = csep[3]; + fp->attributes = csep ? csep[3] : 0; /* some quirks for attributes here */ |