Re: [Intel-xe] [PATCH 11/14] ALSA: hda/intel: Move snd_hdac_i915_init to before probe_work.

[Jani Nikula <jani.nikula@linux.intel.com>]

On Tue, 14 Nov 2023, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
> On Mon, Oct 02, 2023 at 09:38:44PM +0200, maarten.lankhorst@linux.intel.com wrote:
>> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>> 
>> Now that we can use -EPROBE_DEFER, it's no longer required to spin off
>> the snd_hdac_i915_init into a workqueue.
>> 
>> Use the -EPROBE_DEFER mechanism instead, which must be returned in the
>> probe function.
>
> This completely broke i915 audio!
>
> I also can't see any trace of this stuff ever being posted to 
> intel-gfx so it never went through the CI.
>
> Please fix or revert ASAP.

Cc: Jani, Suresh

Ville, please file a bug at gitlab so we can track this, thanks.

BR,
Jani.



>
>> 
>> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
>> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
>> Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
>> ---
>>  sound/pci/hda/hda_intel.c | 54 +++++++++++++++++++--------------------
>>  1 file changed, 27 insertions(+), 27 deletions(-)
>> 
>> diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
>> index e42ad0e816e1..9dad3607596a 100644
>> --- a/sound/pci/hda/hda_intel.c
>> +++ b/sound/pci/hda/hda_intel.c
>> @@ -2135,6 +2135,33 @@ static int azx_probe(struct pci_dev *pci,
>>  
>>  	pci_set_drvdata(pci, card);
>>  
>> +#ifdef CONFIG_SND_HDA_I915
>> +	/* bind with i915 if needed */
>> +	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
>> +		err = snd_hdac_i915_init(azx_bus(chip), false);
>> +		if (err < 0) {
>> +			/* if the controller is bound only with HDMI/DP
>> +			 * (for HSW and BDW), we need to abort the probe;
>> +			 * for other chips, still continue probing as other
>> +			 * codecs can be on the same link.
>> +			 */
>> +			if (HDA_CONTROLLER_IN_GPU(pci)) {
>> +				goto out_free;
>> +			} else {
>> +				/* don't bother any longer */
>> +				chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
>> +			}
>> +		}
>> +
>> +		/* HSW/BDW controllers need this power */
>> +		if (HDA_CONTROLLER_IN_GPU(pci))
>> +			hda->need_i915_power = true;
>> +	}
>> +#else
>> +	if (HDA_CONTROLLER_IN_GPU(pci))
>> +		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
>> +#endif
>> +
>>  	err = register_vga_switcheroo(chip);
>>  	if (err < 0) {
>>  		dev_err(card->dev, "Error registering vga_switcheroo client\n");
>> @@ -2162,11 +2189,6 @@ static int azx_probe(struct pci_dev *pci,
>>  	}
>>  #endif /* CONFIG_SND_HDA_PATCH_LOADER */
>>  
>> -#ifndef CONFIG_SND_HDA_I915
>> -	if (HDA_CONTROLLER_IN_GPU(pci))
>> -		dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
>> -#endif
>> -
>>  	if (schedule_probe)
>>  		schedule_delayed_work(&hda->probe_work, 0);
>>  
>> @@ -2264,28 +2286,6 @@ static int azx_probe_continue(struct azx *chip)
>>  	to_hda_bus(bus)->bus_probing = 1;
>>  	hda->probe_continued = 1;
>>  
>> -	/* bind with i915 if needed */
>> -	if (chip->driver_caps & AZX_DCAPS_I915_COMPONENT) {
>> -		err = snd_hdac_i915_init(bus, true);
>> -		if (err < 0) {
>> -			/* if the controller is bound only with HDMI/DP
>> -			 * (for HSW and BDW), we need to abort the probe;
>> -			 * for other chips, still continue probing as other
>> -			 * codecs can be on the same link.
>> -			 */
>> -			if (HDA_CONTROLLER_IN_GPU(pci)) {
>> -				goto out_free;
>> -			} else {
>> -				/* don't bother any longer */
>> -				chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
>> -			}
>> -		}
>> -
>> -		/* HSW/BDW controllers need this power */
>> -		if (HDA_CONTROLLER_IN_GPU(pci))
>> -			hda->need_i915_power = true;
>> -	}
>> -
>>  	/* Request display power well for the HDA controller or codec. For
>>  	 * Haswell/Broadwell, both the display HDA controller and codec need
>>  	 * this power. For other platforms, like Baytrail/Braswell, only the
>> -- 
>> 2.40.1

-- 
Jani Nikula, Intel