4.19-stable review patch. If anyone has any objections, please let me know.
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From: Murad Masimov m.masimov@maxima.ru
[ Upstream commit 8abbf1f01d6a2ef9f911f793e30f7382154b5a3a ]
If amdtp_stream_init() fails in amdtp_tscm_init(), the latter returns zero, though it's supposed to return error code, which is checked inside init_stream() in file tascam-stream.c.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 47faeea25ef3 ("ALSA: firewire-tascam: add data block processing layer") Signed-off-by: Murad Masimov m.masimov@maxima.ru Reviewed-by: Takashi Sakamoto o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai tiwai@suse.de Link: https://patch.msgid.link/20241101185517.1819-1-m.masimov@maxima.ru Signed-off-by: Sasha Levin sashal@kernel.org --- sound/firewire/tascam/amdtp-tascam.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/firewire/tascam/amdtp-tascam.c b/sound/firewire/tascam/amdtp-tascam.c index ab482423c1654..726cf659133b2 100644 --- a/sound/firewire/tascam/amdtp-tascam.c +++ b/sound/firewire/tascam/amdtp-tascam.c @@ -172,7 +172,7 @@ int amdtp_tscm_init(struct amdtp_stream *s, struct fw_unit *unit, CIP_NONBLOCKING | CIP_SKIP_DBC_ZERO_CHECK, fmt, process_data_blocks, sizeof(struct amdtp_tscm)); if (err < 0) - return 0; + return err;
/* Use fixed value for FDF field. */ s->fdf = 0x00;