[PATCH v3 2/2] ALSA: hda - identify when audio is provided by a video driver

Mauro Carvalho Chehab
2022-04-30T13:42:54Z

On some devices, the hda driver needs to hook into a video driver,
in order to be able to properly access the audio hardware and/or
the power management function.

That's the case of several snd_hda_intel devices that depends on
i915 driver.

Ensure that a proper reference between the snd-hda driver needing
such binding is shown at /proc/modules, in order to allow userspace
to know about such binding.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---

See [PATCH v3 0/2] at: https://lore.kernel.org/all/cover.1651326000.git.mchehab@kernel.org/

sound/hda/hdac_component.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/hda/hdac_component.c b/sound/hda/hdac_component.c
index bb37e7e0bd79..30e130457272 100644
--- a/sound/hda/hdac_component.c
+++ b/sound/hda/hdac_component.c
@@ -199,7 +199,7 @@ static int hdac_component_master_bind(struct device *dev)
}

/* pin the module to avoid dynamic unbinding, but only if given */
- if (!try_module_get(acomp->ops->owner)) {
+ if (!__try_module_get(acomp->ops->owner, dev->driver->owner)) {
ret = -ENODEV;
goto out_unbind;
}
--
2.35.1