diff mbox series

media: c8sectpfe: no need to check return value of debugfs_create functions

Message ID 20191107085238.GA1285658@kroah.com (mailing list archive)
State New, archived
Headers show
Series media: c8sectpfe: no need to check return value of debugfs_create functions | expand

Commit Message

Greg KH Nov. 7, 2019, 8:52 a.m. UTC
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: Patrice Chotard <patrice.chotard@st.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-media@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 .../sti/c8sectpfe/c8sectpfe-debugfs.c         | 26 +++----------------
 1 file changed, 3 insertions(+), 23 deletions(-)

Comments

Patrice CHOTARD Nov. 7, 2019, 9:58 a.m. UTC | #1
Hi

On 11/7/19 9:52 AM, Greg Kroah-Hartman wrote:
> 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: Patrice Chotard <patrice.chotard@st.com>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-media@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  .../sti/c8sectpfe/c8sectpfe-debugfs.c         | 26 +++----------------
>  1 file changed, 3 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c
> index 8f0ddcbeed9d..301fa10f419b 100644
> --- a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c
> +++ b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c
> @@ -225,36 +225,16 @@ static const struct debugfs_reg32 fei_sys_regs[] = {
>  
>  void c8sectpfe_debugfs_init(struct c8sectpfei *fei)
>  {
> -	struct dentry		*root;
> -	struct dentry		*file;
> -
> -	root = debugfs_create_dir("c8sectpfe", NULL);
> -	if (!root)
> -		goto err;
> -
> -	fei->root = root;
> -
>  	fei->regset =  devm_kzalloc(fei->dev, sizeof(*fei->regset), GFP_KERNEL);
>  	if (!fei->regset)
> -		goto err;
> +		return;
>  
>  	fei->regset->regs = fei_sys_regs;
>  	fei->regset->nregs = ARRAY_SIZE(fei_sys_regs);
>  	fei->regset->base = fei->io;
>  
> -	file = debugfs_create_regset32("registers", S_IRUGO, root,
> -				fei->regset);
> -	if (!file) {
> -		dev_err(fei->dev,
> -			"%s not able to create 'registers' debugfs\n"
> -			, __func__);
> -		goto err;
> -	}
> -
> -	return;
> -
> -err:
> -	debugfs_remove_recursive(root);
> +	fei->root = debugfs_create_dir("c8sectpfe", NULL);
> +	debugfs_create_regset32("registers", S_IRUGO, fei->root, fei->regset);
>  }
>  
>  void c8sectpfe_debugfs_exit(struct c8sectpfei *fei)

Reviewed-by: Patrice Chotard <patrice.chotard@st.com>

Thanks
diff mbox series

Patch

diff --git a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c
index 8f0ddcbeed9d..301fa10f419b 100644
--- a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c
+++ b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-debugfs.c
@@ -225,36 +225,16 @@  static const struct debugfs_reg32 fei_sys_regs[] = {
 
 void c8sectpfe_debugfs_init(struct c8sectpfei *fei)
 {
-	struct dentry		*root;
-	struct dentry		*file;
-
-	root = debugfs_create_dir("c8sectpfe", NULL);
-	if (!root)
-		goto err;
-
-	fei->root = root;
-
 	fei->regset =  devm_kzalloc(fei->dev, sizeof(*fei->regset), GFP_KERNEL);
 	if (!fei->regset)
-		goto err;
+		return;
 
 	fei->regset->regs = fei_sys_regs;
 	fei->regset->nregs = ARRAY_SIZE(fei_sys_regs);
 	fei->regset->base = fei->io;
 
-	file = debugfs_create_regset32("registers", S_IRUGO, root,
-				fei->regset);
-	if (!file) {
-		dev_err(fei->dev,
-			"%s not able to create 'registers' debugfs\n"
-			, __func__);
-		goto err;
-	}
-
-	return;
-
-err:
-	debugfs_remove_recursive(root);
+	fei->root = debugfs_create_dir("c8sectpfe", NULL);
+	debugfs_create_regset32("registers", S_IRUGO, fei->root, fei->regset);
 }
 
 void c8sectpfe_debugfs_exit(struct c8sectpfei *fei)