linux-kernel - Re: [PATCH] [media] vimc: set id

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Date:   Sat, 15 Jul 2017 01:04:04 +0300
From:   Sakari Ailus <sakari.ailus@....fi>
To:     Javier Martinez Canillas <javierm@...hat.com>
Cc:     linux-media@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-kernel@...r.kernel.org,
        Helen Koike <helen.koike@...labora.com>
Subject: Re: [PATCH] [media] vimc: set id_table for platform drivers

On Fri, Jul 14, 2017 at 10:58:39AM +0200, Javier Martinez Canillas wrote:
> The vimc platform drivers define a platform device ID table but these
> are not set to the .id_table field in the platform driver structure.
> 
> So the platform device ID table is only used to fill the aliases in
> the module but are not used for matching (works because the platform
> subsystem fallbacks to the driver's name if no .id_table is set).
> 
> But this also means that the platform device ID table isn't used if
> the driver is built-in, which leads to the following build warning:
> 
> This causes the following build warnings when the driver is built-in:
> 
> drivers/media/platform/vimc//vimc-capture.c:528:40: warning: ‘vimc_cap_driver_ids’ defined but not used [-Wunused-const-variable=]
>  static const struct platform_device_id vimc_cap_driver_ids[] = {
>                                         ^~~~~~~~~~~~~~~~~~~
> drivers/media/platform/vimc//vimc-debayer.c:588:40: warning: ‘vimc_deb_driver_ids’ defined but not used [-Wunused-const-variable=]
>  static const struct platform_device_id vimc_deb_driver_ids[] = {
>                                         ^~~~~~~~~~~~~~~~~~~
> drivers/media/platform/vimc//vimc-scaler.c:442:40: warning: ‘vimc_sca_driver_ids’ defined but not used [-Wunused-const-variable=]
>  static const struct platform_device_id vimc_sca_driver_ids[] = {
>                                         ^~~~~~~~~~~~~~~~~~~
> drivers/media/platform/vimc//vimc-sensor.c:376:40: warning: ‘vimc_sen_driver_ids’ defined but not used [-Wunused-const-variable=]
>  static const struct platform_device_id vimc_sen_driver_ids[] = {
>                                         ^~~~~~~~~~~~~~~~~~~
> 
> Reported-by: Mauro Carvalho Chehab <mchehab@...pensource.com>
> Suggested-by: Sakari Ailus <sakari.ailus@....fi>
> Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>

Thanks!

Acked-by: Sakari Ailus <sakari.ailus@...ux.intel.com>

-- 
Sakari Ailus
e-mail: sakari.ailus@....fi	XMPP: sailus@...iisi.org.uk