On 2023-10-05 12:58, Péter Ujfalusi wrote:
On 04/10/2023 19:59, Kai Vehmanen wrote:
Hi,
I'm good with rest of the series, but one patch requires work.
On Wed, 4 Oct 2023, Maarten Lankhorst wrote:
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.
The previously added probe_early can be used for this,
and we also use the newly added remove_late for unbinding afterwards.
[...]
--- a/sound/soc/sof/intel/hda-common-ops.c
+++ b/sound/soc/sof/intel/hda-common-ops.c
@@ -19,6 +19,7 @@ struct snd_sof_dsp_ops sof_hda_common_ops = {
.probe_early = hda_dsp_probe_early,
.probe = hda_dsp_probe,
.remove = hda_dsp_remove,
+ .remove_late = hda_dsp_remove_late,
/* Register IO uses direct mmio */
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 86a2571488bc..4eb7f04b8ae1 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -1160,6 +1160,7 @@ int hda_dsp_probe_early(struct snd_sof_dev *sdev)
return -ENOMEM;
sdev->pdata->hw_pdata = hdev;
hdev->desc = chip;
+ ret = hda_init(sdev);
err:
return ret;
I don't think this works. The hda_codec_i915_init() errors are ignored in
hda_init() so this never returns -EPROBE_DEFER.
So something like this is needed on top (tested quickly on one SOF
machine and this blocks SOF load until i915 or xe driver is loaded):
--cut--
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index 9025bfaf6a7e..8b17c82dcc89 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -863,13 +863,20 @@ static int hda_init(struct snd_sof_dev *sdev)
/* init i915 and HDMI codecs */
ret = hda_codec_i915_init(sdev);
if (ret < 0)
- dev_warn(sdev->dev, "init of i915 and HDMI codec
failed\n");
+ dev_warn(sdev->dev, "init of i915 and HDMI codec failed
(%d)\n", ret);
we should not print anything or maximum dev_dbg in case of EPROBE_DEFER.
There's dev_err_probe, which is dev_err on error, or sets the reason for
deferred probe to the arguments if the error is -EPROBE_DEFER.
~Maarten
