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authorTakashi Iwai <tiwai@suse.de>2021-01-08 08:52:16 +0100
committerTakashi Iwai <tiwai@suse.de>2021-01-08 23:43:36 +0100
commit5d15f1eb456025cf47078fdbc230d7a9f1ee4cef (patch)
treef6ac61cfe623ac36ce5e9a398696561b5577dd56 /sound/usb/usbaudio.h
parentALSA: usb-audio: Fix the missing endpoints creations for quirks (diff)
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ALSA: usb-audio: Choose audioformat of a counter-part substream
The implicit feedback mode needs to handle two endpoints and the choice of the audioformat object for the sync EP is important since this determines the compatibility of the hw_params. The current code uses the same audioformat object if both the main EP and the sync EP point to the same iface/altsetting. This was done in consideration of the non-implicit-fb sync EP handling, and it doesn't match well with the cases where actually to endpoints are defined in the sameiface / altsetting like a few Pioneer devices. Modify snd_usb_find_implicit_fb_sync_format() to pick up the audioformat that is assigned in the counter-part substreams primarily, so that the actual capture stream can be opened properly. We keep the same audioformat object only as a fallback in case nothing found, though. Fixes: 9fddc15e8039 ("ALSA: usb-audio: Factor out the implicit feedback quirk code") Link: https://lore.kernel.org/r/20210108075219.21463-3-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/usbaudio.h')
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