Xu Biang f1ef453157 ALSA: firewire-tascam: add missing unwind goto in snd_tscm_stream_start_duplex() ... commit fb4a624f88 upstream. Smatch Warns: sound/firewire/tascam/tascam-stream.c:493 snd_tscm_stream_start_duplex() warn: missing unwind goto? The direct return will cause the stream list of "&tscm->domain" unemptied and the session in "tscm" unfinished if amdtp_domain_start() returns with an error. Fix this by changing the direct return to a goto which will empty the stream list of "&tscm->domain" and finish the session in "tscm". The snd_tscm_stream_start_duplex() function is called in the prepare callback of PCM. According to "ALSA Kernel API Documentation", the prepare callback of PCM will be called many times at each setup. So, if the "&d->streams" list is not emptied, when the prepare callback is called next time, snd_tscm_stream_start_duplex() will receive -EBUSY from amdtp_domain_add_stream() that tries to add an existing stream to the domain. The error handling code after the "error" label will be executed in this case, and the "&d->streams" list will be emptied. So not emptying the "&d->streams" list will not cause an issue. But it is more efficient and readable to empty it on the first error by changing the direct return to a goto statement. The session in "tscm" has been begun before amdtp_domain_start(), so it needs to be finished when amdtp_domain_start() fails. Fixes: c281d46a51 ("ALSA: firewire-tascam: support AMDTP domain") Signed-off-by: Xu Biang <xubiang@hust.edu.cn> Reviewed-by: Dan Carpenter <error27@gmail.com> Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20230406132801.105108-1-xubiang@hust.edu.cn Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-04-20 12:13:51 +02:00
..
bebob	ALSA: bebob: correct duplicated entries with TerraTec OUI	2021-07-05 19:31:12 +02:00
dice	ALSA: dice: fix regression for Lexicon I-ONIX FW810S	2022-12-08 11:28:42 +01:00
digi00x	ALSA: firewire-digi00x: cease from delayed card registration	2021-06-07 17:14:29 +02:00
fireface	ALSA: fireface: cease from delayed card registration	2021-06-07 17:14:48 +02:00
fireworks	ALSA: fireworks: fix wrong return count shorter than expected by 4 bytes	2022-05-12 12:30:01 +02:00
motu	ALSA: firewire-motu: fix truncated bytes in message tracepoints	2021-09-21 18:48:32 +02:00
oxfw	ALSA: oxfw: fix functional regression for Mackie Onyx 1640i in v5.14 or later	2021-11-18 19:16:57 +01:00
tascam	ALSA: firewire-tascam: add missing unwind goto in snd_tscm_stream_start_duplex()	2023-04-20 12:13:51 +02:00
amdtp-am824.c
amdtp-am824.h
amdtp-stream-trace.h	ALSA: firewire-lib: replace in_interrupt() with in_softirq()	2021-06-12 09:31:41 +02:00
amdtp-stream.c	ALSA: firewire-lib: Fix 'amdtp_domain_start()' when no AMDTP_OUT_STREAM stream is found	2021-06-25 09:38:11 +02:00
amdtp-stream.h	ALSA: firewire-lib: obsolete workqueue for period update	2021-06-10 09:50:37 +02:00
cmp.c
cmp.h
fcp.c	ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction	2022-04-08 14:23:20 +02:00
fcp.h
isight.c
iso-resources.c
iso-resources.h
Kconfig	ALSA: bebob: add support for ToneWeal FW66	2021-06-20 08:42:27 +02:00
lib.c	ALSA: firewire-lib: delete unused kernel API	2021-06-07 17:14:54 +02:00
lib.h	ALSA: firewire-lib: delete unused kernel API	2021-06-07 17:14:54 +02:00
Makefile
packets-buffer.c
packets-buffer.h