From 39173303c83859723dab32c2abfb97296d6af3bf Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 10 Nov 2021 20:46:33 +0100 Subject: [PATCH] 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: c0f1886de7e1 ("ALSA: hda: intel: Allow repeatedly probing on codec configuration errors") Reported-and-tested-by: Scott Branden Cc: 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 --- sound/pci/hda/hda_intel.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 7762718cf429..90e9263ac0bd 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -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; } -- 2.25.1