[PATCH 5/7] ALSA: hda/intel: Move snd_hdac_i915_init to before probe_work.

Maarten Lankhorst
2023-07-18T09:11:33Z

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.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
sound/pci/hda/hda_intel.c | 58 +++++++++++++++++++++------------------
1 file changed, 31 insertions(+), 27 deletions(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 5af1138e745bc..d40345a0088d8 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -213,6 +213,7 @@ MODULE_DESCRIPTION("Intel HDA driver");
#endif
#endif

+static DECLARE_BITMAP(probed_devs, SNDRV_CARDS);

/*
*/
@@ -2094,8 +2095,6 @@ static const struct hda_controller_ops pci_hda_ops = {
.position_check = azx_position_check,
};

-static DECLARE_BITMAP(probed_devs, SNDRV_CARDS);
-
static int azx_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
@@ -2174,7 +2173,36 @@ static int azx_probe(struct pci_dev *pci,
}
#endif /* CONFIG_SND_HDA_PATCH_LOADER */

-#ifndef CONFIG_SND_HDA_I915
+#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 (CONTROLLER_IN_GPU(pci)) {
+ if (err != -EPROBE_DEFER)
+ dev_err(card->dev,
+ "HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
+
+ clear_bit(chip->dev_index, probed_devs);
+ pci_set_drvdata(pci, NULL);
+ snd_device_free(card, chip);
+ return err;
+ } else {
+ /* don't bother any longer */
+ chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
+ }
+ }
+
+ /* HSW/BDW controllers need this power */
+ if (CONTROLLER_IN_GPU(pci))
+ hda->need_i915_power = true;
+ }
+#else
if (CONTROLLER_IN_GPU(pci))
dev_err(card->dev, "Haswell/Broadwell HDMI/DP must build in CONFIG_SND_HDA_I915\n");
#endif
@@ -2274,30 +2302,6 @@ 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 (CONTROLLER_IN_GPU(pci)) {
- dev_err(chip->card->dev,
- "HSW/BDW HD-audio HDMI/DP requires binding with gfx driver\n");
- goto out_free;
- } else {
- /* don't bother any longer */
- chip->driver_caps &= ~AZX_DCAPS_I915_COMPONENT;
- }
- }
-
- /* HSW/BDW controllers need this power */
- if (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
--
2.39.2