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. Currently, this dependency is hidden from /proc/modules and from lsmod, making harder to identify the need to unbind the audio driver before being able to unbind the i915 driver. Add a reference for it at the module dependency, in order to allow userspace to identify it, and print a message on such cases. Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> --- See [PATCH 0/2] at: https://lore.kernel.org/all/cover.1651212016.git.mchehab@xxxxxxxxxx/ sound/hda/hdac_component.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/sound/hda/hdac_component.c b/sound/hda/hdac_component.c index bb37e7e0bd79..103c6be8be1e 100644 --- a/sound/hda/hdac_component.c +++ b/sound/hda/hdac_component.c @@ -211,6 +211,14 @@ static int hdac_component_master_bind(struct device *dev) } complete_all(&acomp->master_bind_complete); + + if (acomp->ops->owner && acomp->ops->owner->name) { + dev_info(dev, "audio component provided by %s driver\n", + acomp->ops->owner->name); + module_add_named_dependency(acomp->ops->owner->name, + dev->driver->owner); + } + return 0; module_put: -- 2.35.1
