linux-kernel - Re: [PATCH v1 7/7] drm: sti: remove the last call to debugfs

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Date:   Mon, 18 Jun 2018 16:12:22 +0000
From:   Philippe CORNU <philippe.cornu@...com>
To:     Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        "gustavo@...ovan.org" <gustavo@...ovan.org>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "seanpaul@...omium.org" <seanpaul@...omium.org>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "Vincent ABRIOU" <vincent.abriou@...com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH v1 7/7] drm: sti: remove the last call to debugfs

Hi Benjamin,

On 06/05/2018 03:54 PM, Benjamin Gaignard wrote:
> Thanks to all the hooks in drm structure, custom debugfs could be
> removed of sti driver.
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...aro.org>
> ---
>   drivers/gpu/drm/sti/sti_drv.c | 50 -------------------------------------------
>   1 file changed, 50 deletions(-)
> 
> diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
> index 90c46b49c931..95b0ac4d819c 100644
> --- a/drivers/gpu/drm/sti/sti_drv.c
> +++ b/drivers/gpu/drm/sti/sti_drv.c
> @@ -7,7 +7,6 @@
>   #include <drm/drmP.h>
>   
>   #include <linux/component.h>
> -#include <linux/debugfs.h>
>   #include <linux/kernel.h>
>   #include <linux/module.h>
>   #include <linux/of_platform.h>
> @@ -72,53 +71,6 @@ static int sti_drm_fps_set(void *data, u64 val)
>   DEFINE_SIMPLE_ATTRIBUTE(sti_drm_fps_fops,
>   			sti_drm_fps_get, sti_drm_fps_set, "%llu\n");
>   
> -static int sti_drm_fps_dbg_show(struct seq_file *s, void *data)
> -{
> -	struct drm_info_node *node = s->private;
> -	struct drm_device *dev = node->minor->dev;
> -	struct drm_plane *p;
> -
> -	list_for_each_entry(p, &dev->mode_config.plane_list, head) {
> -		struct sti_plane *plane = to_sti_plane(p);
> -
> -		seq_printf(s, "%s%s\n",
> -			   plane->fps_info.fps_str,
> -			   plane->fps_info.fips_str);
> -	}
> -
> -	return 0;
> -}
> -
> -static struct drm_info_list sti_drm_dbg_list[] = {
> -	{"fps_get", sti_drm_fps_dbg_show, 0},
> -};
> -
> -static int sti_drm_dbg_init(struct drm_minor *minor)
> -{
> -	struct dentry *dentry;
> -	int ret;
> -
> -	ret = drm_debugfs_create_files(sti_drm_dbg_list,
> -				       ARRAY_SIZE(sti_drm_dbg_list),
> -				       minor->debugfs_root, minor);
> -	if (ret)
> -		goto err;
> -
> -	dentry = debugfs_create_file("fps_show", S_IRUGO | S_IWUSR,
> -				     minor->debugfs_root, minor->dev,
> -				     &sti_drm_fps_fops);
> -	if (!dentry) {
> -		ret = -ENOMEM;
> -		goto err;
> -	}
> -
> -	DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
> -	return 0;
> -err:
> -	DRM_ERROR("%s: cannot install debugfs\n", DRIVER_NAME);
> -	return ret;
> -}
> -
>   static const struct drm_mode_config_funcs sti_mode_config_funcs = {
>   	.fb_create = drm_gem_fb_create,
>   	.output_poll_changed = drm_fb_helper_output_poll_changed,
> @@ -167,8 +119,6 @@ static struct drm_driver sti_driver = {
>   	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
>   	.gem_prime_mmap = drm_gem_cma_prime_mmap,
>   
> -	.debugfs_init = sti_drm_dbg_init,
> -
>   	.name = DRIVER_NAME,
>   	.desc = DRIVER_DESC,
>   	.date = DRIVER_DATE,
> 

Great,
Reviewed-by: Philippe Cornu <philippe.cornu@...com>
Many thanks
Philippe :-)