]> www.infradead.org Git - users/dwmw2/linux.git/commit
ALSA: usb-audio: Optimize TEAC clock quirk
authorTakashi Iwai <tiwai@suse.de>
Tue, 31 May 2022 13:07:49 +0000 (15:07 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 6 Jun 2022 06:49:00 +0000 (08:49 +0200)
commit8f4baf2c265602c396bec604503cb7c669b00461
tree0e1ef775fa60b6422056b19a2a9ef09e0ea784da
parent4caf12e7c81d96acfa268c8e44c721a8f036f52c
ALSA: usb-audio: Optimize TEAC clock quirk

commit 3753fcc22974affa26160ce1c46a6ebaaaa86758 upstream.

Maris found out that the quirk for TEAC devices to work around the
clock setup is needed to apply only when the base clock is changed,
e.g. from 48000-based clocks (48000, 96000, 192000, 384000) to
44100-based clocks (44100, 88200, 176400, 352800), or vice versa,
while switching to another clock with the same base clock doesn't need
the (forcible) interface setup.

This patch implements the optimization for the TEAC clock quirk to
avoid the unnecessary interface re-setup.

Fixes: 5ce0b06ae5e6 ("ALSA: usb-audio: Workaround for clock setup on TEAC devices")
Reported-by: Maris Abele <maris7abele@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220531130749.30357-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sound/usb/clock.c