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Date:   Tue, 12 Oct 2021 00:24:02 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Mikhail Rudenko <mike.rudenko@...il.com>
Cc:     linux-media@...r.kernel.org,
        Helen Koike <helen.koike@...labora.com>,
        Dafna Hirschfeld <dafna.hirschfeld@...labora.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: rockchip: rkisp1: use device name for debugfs
 subdir name

On Sun, Oct 10, 2021 at 08:54:57PM +0300, Mikhail Rudenko wrote:
> While testing Rockchip RK3399 with both ISPs enabled, a dmesg error
> was observed:
> ```
> [   15.559141] debugfs: Directory 'rkisp1' with parent '/' already present!
> ```
> 
> Fix it by using the device name for the debugfs subdirectory name
> instead of the driver name, thus preventing name collision.
> 
> Signed-off-by: Mikhail Rudenko <mike.rudenko@...il.com>

Reviewed-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>

Thanks!

> ---
>  drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> index 7474150b94ed..560f928c3752 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> @@ -426,7 +426,7 @@ 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);
> +	debug->debugfs_dir = debugfs_create_dir(dev_name(rkisp1->dev), NULL);
>  	debugfs_create_ulong("data_loss", 0444, debug->debugfs_dir,
>  			     &debug->data_loss);
>  	debugfs_create_ulong("outform_size_err", 0444,  debug->debugfs_dir,
> -- 
> 2.33.0
> 

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