ALSA: hda: Free card instance properly at probe errors

The recent change in hda-intel driver to allow repeated probes
surfaced a problem that has been hidden until; the probe process in
the work calls azx_free() at the error path, and this skips the card
free process that eventually releases codec instances.  As a result,
we get a kernel WARNING like:

  snd_hda_intel 0000:00:1f.3: Cannot probe codecs, giving up
  ------------[ cut here ]------------
  WARNING: CPU: 14 PID: 186 at sound/hda/hdac_bus.c:73
  ....

For fixing this, we need to call snd_card_free() instead of
azx_free().  Additionally, the device drvdata has to be cleared, as
the driver binding itself is still active.  Then the PM and other
driver callbacks will ignore the procedure.

Fixes: c0f1886de7 ("ALSA: hda: intel: Allow repeatedly probing on codec configuration errors")
Reported-and-tested-by: Scott Branden <scott.branden@broadcom.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/063e2397-7edb-5f48-7b0d-618b938d9dd8@broadcom.com
Link: https://lore.kernel.org/r/20211110194633.19098-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-11-10 20:46:33 +01:00
Родитель c058493df7
Коммит 39173303c8
1 изменённых файлов: 2 добавлений и 1 удалений

Просмотреть файл

@ -2327,7 +2327,8 @@ static int azx_probe_continue(struct azx *chip)
out_free:
if (err < 0) {
azx_free(chip);
pci_set_drvdata(pci, NULL);
snd_card_free(chip->card);
return err;
}