[PATCH] drm/mediatek: use platform_register_drivers

[CK Hu]

Hi, Philipp:

Sorry for the late reply. I've applied this patch to my branch
mediatek-drm-next-4.13, thanks.

Regards,
CK

On Fri, 2017-03-17 at 18:00 +0100, Philipp Zabel wrote:
> Use platform_register_drivers instead of open coding the iteration over
> component platform drivers in the mtk_drm_drv and mtk_hdmi modules.
> 
> Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c | 27 ++++-----------------------
>  drivers/gpu/drm/mediatek/mtk_hdmi.c    | 27 ++++-----------------------
>  2 files changed, 8 insertions(+), 46 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index f5a1fd9b3ecc7..20e540aa9e87a 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -536,33 +536,14 @@ static struct platform_driver * const mtk_drm_drivers[] = {
>  
>  static int __init mtk_drm_init(void)
>  {
> -	int ret;
> -	int i;
> -
> -	for (i = 0; i < ARRAY_SIZE(mtk_drm_drivers); i++) {
> -		ret = platform_driver_register(mtk_drm_drivers[i]);
> -		if (ret < 0) {
> -			pr_err("Failed to register %s driver: %d\n",
> -			       mtk_drm_drivers[i]->driver.name, ret);
> -			goto err;
> -		}
> -	}
> -
> -	return 0;
> -
> -err:
> -	while (--i >= 0)
> -		platform_driver_unregister(mtk_drm_drivers[i]);
> -
> -	return ret;
> +	return platform_register_drivers(mtk_drm_drivers,
> +					 ARRAY_SIZE(mtk_drm_drivers));
>  }
>  
>  static void __exit mtk_drm_exit(void)
>  {
> -	int i;
> -
> -	for (i = ARRAY_SIZE(mtk_drm_drivers) - 1; i >= 0; i--)
> -		platform_driver_unregister(mtk_drm_drivers[i]);
> +	platform_unregister_drivers(mtk_drm_drivers,
> +				    ARRAY_SIZE(mtk_drm_drivers));
>  }
>  
>  module_init(mtk_drm_init);
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index 4e2f9c43395c2..65ac296a02fac 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> @@ -1798,33 +1798,14 @@ static struct platform_driver * const mtk_hdmi_drivers[] = {
>  
>  static int __init mtk_hdmitx_init(void)
>  {
> -	int ret;
> -	int i;
> -
> -	for (i = 0; i < ARRAY_SIZE(mtk_hdmi_drivers); i++) {
> -		ret = platform_driver_register(mtk_hdmi_drivers[i]);
> -		if (ret < 0) {
> -			pr_err("Failed to register %s driver: %d\n",
> -			       mtk_hdmi_drivers[i]->driver.name, ret);
> -			goto err;
> -		}
> -	}
> -
> -	return 0;
> -
> -err:
> -	while (--i >= 0)
> -		platform_driver_unregister(mtk_hdmi_drivers[i]);
> -
> -	return ret;
> +	return platform_register_drivers(mtk_hdmi_drivers,
> +					 ARRAY_SIZE(mtk_hdmi_drivers));
>  }
>  
>  static void __exit mtk_hdmitx_exit(void)
>  {
> -	int i;
> -
> -	for (i = ARRAY_SIZE(mtk_hdmi_drivers) - 1; i >= 0; i--)
> -		platform_driver_unregister(mtk_hdmi_drivers[i]);
> +	platform_unregister_drivers(mtk_hdmi_drivers,
> +				    ARRAY_SIZE(mtk_hdmi_drivers));
>  }
>  
>  module_init(mtk_hdmitx_init);