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Date: Fri, 14 Jul 2017 12:09:06 -0300
From: Helen Koike <helen.koike@...labora.com>
To: Javier Martinez Canillas <javierm@...hat.com>,
linux-media@...r.kernel.org
Cc: Sakari Ailus <sakari.ailus@....fi>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [media] vimc: set id_table for platform drivers
Hi,
Thanks for the patch
On 2017-07-14 05:58 AM, 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>
Seems good to me.
Reviewed-by: Helen Koike <helen.koike@...labora.com>
>
> ---
>
> drivers/media/platform/vimc/vimc-capture.c | 15 ++++++++-------
> drivers/media/platform/vimc/vimc-debayer.c | 15 ++++++++-------
> drivers/media/platform/vimc/vimc-scaler.c | 15 ++++++++-------
> drivers/media/platform/vimc/vimc-sensor.c | 15 ++++++++-------
> 4 files changed, 32 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
> index 14cb32e21130..88a1e5670c72 100644
> --- a/drivers/media/platform/vimc/vimc-capture.c
> +++ b/drivers/media/platform/vimc/vimc-capture.c
> @@ -517,21 +517,22 @@ static int vimc_cap_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static const struct platform_device_id vimc_cap_driver_ids[] = {
> + {
> + .name = VIMC_CAP_DRV_NAME,
> + },
> + { }
> +};
> +
> static struct platform_driver vimc_cap_pdrv = {
> .probe = vimc_cap_probe,
> .remove = vimc_cap_remove,
> + .id_table = vimc_cap_driver_ids,
> .driver = {
> .name = VIMC_CAP_DRV_NAME,
> },
> };
>
> -static const struct platform_device_id vimc_cap_driver_ids[] = {
> - {
> - .name = VIMC_CAP_DRV_NAME,
> - },
> - { }
> -};
> -
> module_platform_driver(vimc_cap_pdrv);
>
> MODULE_DEVICE_TABLE(platform, vimc_cap_driver_ids);
> diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
> index 35b15bd4d61d..033a131f67af 100644
> --- a/drivers/media/platform/vimc/vimc-debayer.c
> +++ b/drivers/media/platform/vimc/vimc-debayer.c
> @@ -577,21 +577,22 @@ static int vimc_deb_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static const struct platform_device_id vimc_deb_driver_ids[] = {
> + {
> + .name = VIMC_DEB_DRV_NAME,
> + },
> + { }
> +};
> +
> static struct platform_driver vimc_deb_pdrv = {
> .probe = vimc_deb_probe,
> .remove = vimc_deb_remove,
> + .id_table = vimc_deb_driver_ids,
> .driver = {
> .name = VIMC_DEB_DRV_NAME,
> },
> };
>
> -static const struct platform_device_id vimc_deb_driver_ids[] = {
> - {
> - .name = VIMC_DEB_DRV_NAME,
> - },
> - { }
> -};
> -
> module_platform_driver(vimc_deb_pdrv);
>
> MODULE_DEVICE_TABLE(platform, vimc_deb_driver_ids);
> diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
> index fe77505d2679..0a3e086e12f3 100644
> --- a/drivers/media/platform/vimc/vimc-scaler.c
> +++ b/drivers/media/platform/vimc/vimc-scaler.c
> @@ -431,21 +431,22 @@ static int vimc_sca_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static const struct platform_device_id vimc_sca_driver_ids[] = {
> + {
> + .name = VIMC_SCA_DRV_NAME,
> + },
> + { }
> +};
> +
> static struct platform_driver vimc_sca_pdrv = {
> .probe = vimc_sca_probe,
> .remove = vimc_sca_remove,
> + .id_table = vimc_sca_driver_ids,
> .driver = {
> .name = VIMC_SCA_DRV_NAME,
> },
> };
>
> -static const struct platform_device_id vimc_sca_driver_ids[] = {
> - {
> - .name = VIMC_SCA_DRV_NAME,
> - },
> - { }
> -};
> -
> module_platform_driver(vimc_sca_pdrv);
>
> MODULE_DEVICE_TABLE(platform, vimc_sca_driver_ids);
> diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
> index ebdbbe8c05ed..615c2b18dcfc 100644
> --- a/drivers/media/platform/vimc/vimc-sensor.c
> +++ b/drivers/media/platform/vimc/vimc-sensor.c
> @@ -365,21 +365,22 @@ static int vimc_sen_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static const struct platform_device_id vimc_sen_driver_ids[] = {
> + {
> + .name = VIMC_SEN_DRV_NAME,
> + },
> + { }
> +};
> +
> static struct platform_driver vimc_sen_pdrv = {
> .probe = vimc_sen_probe,
> .remove = vimc_sen_remove,
> + .id_table = vimc_sen_driver_ids,
> .driver = {
> .name = VIMC_SEN_DRV_NAME,
> },
> };
>
> -static const struct platform_device_id vimc_sen_driver_ids[] = {
> - {
> - .name = VIMC_SEN_DRV_NAME,
> - },
> - { }
> -};
> -
> module_platform_driver(vimc_sen_pdrv);
>
> MODULE_DEVICE_TABLE(platform, vimc_sen_driver_ids);
>
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