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ALSA: oxfw: fix regression to handle Stanton SCS.1m/1d 

At a commit 6c29230e2a ("ALSA: oxfw: delayed registration of sound
card"), ALSA oxfw driver fails to handle SCS.1m/1d, due to -EBUSY at a call
of snd_card_register(). The cause is that the driver manages to register
two rawmidi instances with the same device number 0. This is a regression
introduced since kernel 4.7.

This commit fixes the regression, by fixing up device property after
discovering stream formats.

Fixes: 6c29230e2a ("ALSA: oxfw: delayed registration of sound card")
Cc: <stable@vger.kernel.org> # 4.7+
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2017-04-03 21:13:40 +09:00 committed by Takashi Iwai
parent 2f726aec19
commit 3d016d57fd
1 changed files with 2 additions and 2 deletions
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4
sound/firewire/oxfw/oxfw.c
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@ -227,11 +227,11 @@ static void do_registration(struct work_struct *work)
if (err < 0)
goto error;
err = detect_quirks(oxfw);
err = snd_oxfw_stream_discover(oxfw);
if (err < 0)
goto error;
err = snd_oxfw_stream_discover(oxfw);
err = detect_quirks(oxfw);
if (err < 0)
goto error;