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ALSA: echoaudio: Fix the missing snd_card_free() call at probe error 

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() on the error from the
probe callback using a new helper function.

Fixes: 9c211bf392 ("ALSA: echoaudio: Allocate resources with device-managed APIs")
Reported-and-tested-by: Zheyu Ma <zheyuma97@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAMhUBjm2AdyEZ_-EgexdNDN7SvY4f89=4=FwAL+c0Mg0O+X50A@mail.gmail.com
Link: https://lore.kernel.org/r/20220412093141.8008-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2022-04-12 11:31:41 +02:00
parent fee2b871d8
commit 313c7e5703
1 changed files with 7 additions and 2 deletions
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9
sound/pci/echoaudio/echoaudio.c
View File

@ -1970,8 +1970,8 @@ static int snd_echo_create(struct snd_card *card,
}
/* constructor */
static int snd_echo_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
static int __snd_echo_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
@ -2139,6 +2139,11 @@ static int snd_echo_probe(struct pci_dev *pci,
return 0;
}
static int snd_echo_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
return snd_card_free_on_error(&pci->dev, __snd_echo_probe(pci, pci_id));
}
#if defined(CONFIG_PM_SLEEP)