[PATCH AUTOSEL 4.4 01/77] ALSA: isight: fix leak of reference to firewire unit in error path of .probe callback

From: Sasha Levin
Date: Sat Nov 16 2019 - 11:00:10 EST


From: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>

[ Upstream commit 51e68fb0929c29e47e9074ca3e99ffd6021a1c5a ]

In some error paths, reference count of firewire unit is not decreased.
This commit fixes the bug.

Fixes: 5b14ec25a79b('ALSA: firewire: release reference count of firewire unit in .remove callback of bus driver')
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/firewire/isight.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/sound/firewire/isight.c b/sound/firewire/isight.c
index 48d6dca471c6b..6c8daf5b391ff 100644
--- a/sound/firewire/isight.c
+++ b/sound/firewire/isight.c
@@ -639,7 +639,7 @@ static int isight_probe(struct fw_unit *unit,
if (!isight->audio_base) {
dev_err(&unit->device, "audio unit base not found\n");
err = -ENXIO;
- goto err_unit;
+ goto error;
}
fw_iso_resources_init(&isight->resources, unit);

@@ -668,12 +668,12 @@ static int isight_probe(struct fw_unit *unit,
dev_set_drvdata(&unit->device, isight);

return 0;
-
-err_unit:
- fw_unit_put(isight->unit);
- mutex_destroy(&isight->mutex);
error:
snd_card_free(card);
+
+ mutex_destroy(&isight->mutex);
+ fw_unit_put(isight->unit);
+
return err;
}

--
2.20.1