linux-kernel - Re: [PATCH 9/9] staging: media: atomisp: add PMIC

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Date:   Fri, 29 May 2020 20:11:29 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH 9/9] staging: media: atomisp: add PMIC_OPREGION dependency

On Fri, May 29, 2020 at 10:00:31PM +0200, Arnd Bergmann wrote:
> Without that driver, there is a link failure in
> 
> ERROR: modpost: "intel_soc_pmic_exec_mipi_pmic_seq_element"
> [drivers/staging/media/atomisp/pci/atomisp_gmin_platform.ko] undefined!
> 
> Add an explicit Kconfig dependency.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

It'd be interesting to know if this is strictly required for the driver
to work properly. The call to intel_soc_pmic_exec_mipi_pmic_seq_element
has some error handling after it, maybe that should just be surrounded
by an #ifdef or IS_ENABLED for PMIC_OPREGION, like some other drivers
do.

Regardless of that:

Reviewed-by: Nathan Chancellor <natechancellor@...il.com>

> ---
>  drivers/staging/media/atomisp/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/staging/media/atomisp/Kconfig b/drivers/staging/media/atomisp/Kconfig
> index c4f3049b0706..e86311c14329 100644
> --- a/drivers/staging/media/atomisp/Kconfig
> +++ b/drivers/staging/media/atomisp/Kconfig
> @@ -11,6 +11,7 @@ menuconfig INTEL_ATOMISP
>  config VIDEO_ATOMISP
>  	tristate "Intel Atom Image Signal Processor Driver"
>  	depends on VIDEO_V4L2 && INTEL_ATOMISP
> +	depends on PMIC_OPREGION
>  	select IOSF_MBI
>  	select VIDEOBUF_VMALLOC
>  	---help---
> -- 
> 2.26.2
>