Hi Morimoto-san,
On Wed, Aug 24, 2022 at 03:13:04AM +0000, Kuninori Morimoto wrote:
>
> Hi Renesas-ML
> Cc Saravana, Greg, Laurent, Geert
>
> I'm now testing v6.0.0-rc2 kernel on ULCB-KF board, and I noticed
> it doesn't probe sound card.
> I git-bisected and noticed that this patch breaks sound probe.
>
> commit 71066545b48e4259f89481199a0bbc7c35457738
> ("driver core: Set fw_devlink.strict=1 by default")
>
> I could re-probe sound card if I reverted it.
> (My .config is using Y for all drivers)
>
> I'm not well understanding about this patch,
> but it seems it is related to deferred probe.
>
> My sound card needs many drivers to probe.
>
> HDMI
> Sound CPU
> Sound Codec x 2 (depends on I2C)
> Sound Card
>
> To probe "Sound Card", it needs other necessary drivers.
> But it seems some necessary drivers are not probed by above patch.
> In my quick check, "HDMI" and 1 of "Sound Codec" drivers are not probed.
>
> How can I solve this issue, or where I can check ?
Saravana is more familiar with devlink than I am, so he may be able to
diagnose that without further information, but otherwise it would be
helpful if you could provide some logs. Enabling the debug messages in
drivers/base/dd.c can provide some insight. The contents of the debugfs
devices_deferred file can also be useful, as well as the
consumer/supplier links in sysfs for all the devices involved with the
sound card.
--
Regards,
Laurent Pinchart
