Re: [PATCH v2] media: rockchip: rkisp1: remove useless debugfs checks

Helen Koike
2020-12-01T14:41:00Z

On 12/1/20 11:30 AM, Dan Carpenter wrote:
> The debugfs_create_dir() function never returns NULLs so this code will
> never be executed. It's not intended that callers will check for
> debugfs errors in the normal case and it's not necessary in this driver,
> so we can just delete this code.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Since the debugfs_create_*() functions already check the parent
with IS_ERR(), this looks good to me.

Acked-by: Helen Koike <helen.koike@collabora.com>

Thanks
Helen

> ---
> v2: Fix subject
>
> drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> index 9af137e4967f..68da1eed753d 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> @@ -430,10 +430,6 @@ static void rkisp1_debug_init(struct rkisp1_device *rkisp1)
> struct rkisp1_debug *debug = &rkisp1->debug;
>
> debug->debugfs_dir = debugfs_create_dir(RKISP1_DRIVER_NAME, NULL);
> - if (!debug->debugfs_dir) {
> - dev_dbg(rkisp1->dev, "failed to create debugfs directory\n");
> - return;
> - }
> debugfs_create_ulong("data_loss", 0444, debug->debugfs_dir,
> &debug->data_loss);
> debugfs_create_ulong("outform_size_err", 0444, debug->debugfs_dir,