diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 13:50:59 (GMT) |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2013-04-09 14:01:23 (GMT) |
| commit | 835f9c38bbb4498c3d43b7466964bdadbb1fd244 (patch) | |
| tree | ade5aec66bc7ddb97048c4f141932de0f93369b9 /sound/usb/card.c | |
| parent | f5f29151588744ea2e283971cb0ad403ee04e3e2 (diff) | |
| parent | a937536b868b8369b98967929045f1df54234323 (diff) | |
| download | linux-fsl-qoriq-835f9c38bbb4498c3d43b7466964bdadbb1fd244.tar.xz | |
Merge tag 'v3.9-rc3' into next/multiplatform
Linux 3.9-rc3
Conflicts:
arch/arm/Kconfig
arch/arm/mach-spear/spear3xx.c
arch/arm/plat-spear/Kconfig
This is a dependency for ux500/multiplatform
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'sound/usb/card.c')
| -rw-r--r-- | sound/usb/card.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c index 803953a..2da8ad7 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -244,6 +244,21 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) usb_ifnum_to_if(dev, ctrlif)->intf_assoc; if (!assoc) { + /* + * Firmware writers cannot count to three. So to find + * the IAD on the NuForce UDH-100, also check the next + * interface. + */ + struct usb_interface *iface = + usb_ifnum_to_if(dev, ctrlif + 1); + if (iface && + iface->intf_assoc && + iface->intf_assoc->bFunctionClass == USB_CLASS_AUDIO && + iface->intf_assoc->bFunctionProtocol == UAC_VERSION_2) + assoc = iface->intf_assoc; + } + + if (!assoc) { snd_printk(KERN_ERR "Audio class v2 interfaces need an interface association\n"); return -EINVAL; } |