When the initialization of Intel HDMI controller fails due to missing i915 kernel symbols (e.g. HD-audio is built in while i915 is module), the driver discontinues the probe. However, since the probe was done asynchronously, the driver object still remains, thus the relevant PM ops are still called at suspend/resume. This results in the bad access to the incomplete audio card object, eventually leads to Oops or stall at PM.

This patch adds the missing checks of chip->init_failed flag at each PM callback in order to fix the problem above.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=79561 Cc: stable@vger.kernel.org Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/hda/hda_intel.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index d690c26a197c..83cd19017cf3 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -596,7 +596,7 @@ static int azx_suspend(struct device *dev) struct azx *chip = card->private_data; struct azx_pcm *p;

- if (chip->disabled) + if (chip->disabled || chip->init_failed) return 0;

snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); @@ -628,7 +628,7 @@ static int azx_resume(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip = card->private_data;

- if (chip->disabled) + if (chip->disabled || chip->init_failed) return 0;

if (chip->driver_caps & AZX_DCAPS_I915_POWERWELL) { @@ -665,7 +665,7 @@ static int azx_runtime_suspend(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip = card->private_data;

- if (chip->disabled) + if (chip->disabled || chip->init_failed) return 0;

if (!(chip->driver_caps & AZX_DCAPS_PM_RUNTIME)) @@ -692,7 +692,7 @@ static int azx_runtime_resume(struct device *dev) struct hda_codec *codec; int status;

- if (chip->disabled) + if (chip->disabled || chip->init_failed) return 0;

if (!(chip->driver_caps & AZX_DCAPS_PM_RUNTIME)) @@ -729,7 +729,7 @@ static int azx_runtime_idle(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip = card->private_data;

- if (chip->disabled) + if (chip->disabled || chip->init_failed) return 0;

if (!power_save_controller ||