As HD-audio driver does deferred probe internally via workqueue, the driver might go into the mixed state doing both probe and remove when the module gets unloaded during the probe work. This eventually triggers an Oops, unsurprisingly.

For avoiding this race, we just need to flush the pending probe work explicitly before actually starting the resource release.

Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=960710 Cc: stable@vger.kernel.org # v3.17+ Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/hda/hda_intel.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 86bbc6307c4f..256e6cda218f 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2151,9 +2151,17 @@ i915_power_fail: static void azx_remove(struct pci_dev *pci) { struct snd_card *card = pci_get_drvdata(pci); + struct azx *chip; + struct hda_intel *hda; + + if (card) { + /* flush the pending probing work */ + chip = card->private_data; + hda = container_of(chip, struct hda_intel, chip); + flush_work(&hda->probe_work);

- if (card) snd_card_free(card); + } }

static void azx_shutdown(struct pci_dev *pci)