linux-kernel - [PATCH] media: rockchip: rkisp1: use device name for debugfs subdir name

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Date:   Sun, 10 Oct 2021 20:54:57 +0300
From:   Mikhail Rudenko <mike.rudenko@...il.com>
To:     linux-media@...r.kernel.org
Cc:     Mikhail Rudenko <mike.rudenko@...il.com>,
        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: [PATCH] media: rockchip: rkisp1: use device name for debugfs subdir name

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>
---
 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