[PATCH] sti: no need to check return value of debugfs_create functions

[PATCH] sti: no need to check return value of debugfs_create functions

[Greg Kroah-Hartman]

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/sti/sti_drv.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index a525fd899f68..4797e46bf384 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -95,7 +95,6 @@ static struct drm_info_list sti_drm_dbg_list[] = {
 
 static int sti_drm_dbg_init(struct drm_minor *minor)
 {
-	struct dentry *dentry;
 	int ret;
 
 	ret = drm_debugfs_create_files(sti_drm_dbg_list,
@@ -104,13 +103,8 @@ static int sti_drm_dbg_init(struct drm_minor *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;
-	}
+	debugfs_create_file("fps_show", S_IRUGO | S_IWUSR, minor->debugfs_root,
+			    minor->dev, &sti_drm_fps_fops);
 
 	DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
 	return 0;
-- 
2.22.0

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Re: [PATCH] sti: no need to check return value of debugfs_create functions

[Benjamin Gaignard]

Le jeu. 13 juin 2019 à 13:46, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> a écrit :
>
> When calling debugfs functions, there is no need to ever check the
> return value.  The function can work or not, but the code logic should
> never do something different based on this.
>
> Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
> Cc: Vincent Abriou <vincent.abriou@st.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Applied on drm-misc-next.
Thanks,
Benjamin

> ---
>  drivers/gpu/drm/sti/sti_drv.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
> index a525fd899f68..4797e46bf384 100644
> --- a/drivers/gpu/drm/sti/sti_drv.c
> +++ b/drivers/gpu/drm/sti/sti_drv.c
> @@ -95,7 +95,6 @@ static struct drm_info_list sti_drm_dbg_list[] = {
>
>  static int sti_drm_dbg_init(struct drm_minor *minor)
>  {
> -       struct dentry *dentry;
>         int ret;
>
>         ret = drm_debugfs_create_files(sti_drm_dbg_list,
> @@ -104,13 +103,8 @@ static int sti_drm_dbg_init(struct drm_minor *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;
> -       }
> +       debugfs_create_file("fps_show", S_IRUGO | S_IWUSR, minor->debugfs_root,
> +                           minor->dev, &sti_drm_fps_fops);
>
>         DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
>         return 0;
> --
> 2.22.0
>
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