[PATCH 5.17 045/219] ALSA: lx6464es: Fix the missing snd_card_free() call at probe error

Greg Kroah-Hartman
2022-04-18T12:23:32Z

From: Takashi Iwai <tiwai@suse.de>

commit 60797a21dd8360a99ba797f8ca587087c07bb54c upstream.

The previous cleanup with devres may lead to the incorrect release
orders at the probe error handling due to the devres's nature. Until
we register the card, snd_card_free() has to be called at first for
releasing the stuff properly when the driver tries to manage and
release the stuff via card->private_free().

This patch fixes it by calling snd_card_free() manually on the error
from the probe callback.

Fixes: 6f16c19b115e ("ALSA: lx6464es: Allocate resources with device-managed APIs")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220412102636.16000-34-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/pci/lx6464es/lx6464es.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

--- a/sound/pci/lx6464es/lx6464es.c
+++ b/sound/pci/lx6464es/lx6464es.c
@@ -1019,7 +1019,7 @@ static int snd_lx6464es_probe(struct pci
err = snd_lx6464es_create(card, pci);
if (err < 0) {
dev_err(card->dev, "error during snd_lx6464es_create\n");
- return err;
+ goto error;
}

strcpy(card->driver, "LX6464ES");
@@ -1036,12 +1036,16 @@ static int snd_lx6464es_probe(struct pci

err = snd_card_register(card);
if (err < 0)
- return err;
+ goto error;

dev_dbg(chip->card->dev, "initialization successful\n");
pci_set_drvdata(pci, card);
dev++;
return 0;
+
+ error:
+ snd_card_free(card);
+ return err;
}

static struct pci_driver lx6464es_driver = {