linux-kernel - [PATCH AUTOSEL 5.15 115/188] media: rockchip: rkisp1: use device name for debugfs subdir name

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Message-Id: <20220118023152.1948105-115-sashal@kernel.org>
Date:   Mon, 17 Jan 2022 21:30:39 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Mikhail Rudenko <mike.rudenko@...il.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Sasha Levin <sashal@...nel.org>, helen.koike@...labora.com,
        dafna.hirschfeld@...labora.com, mchehab@...nel.org,
        heiko@...ech.de, linux-media@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.15 115/188] media: rockchip: rkisp1: use device name for debugfs subdir name

From: Mikhail Rudenko <mike.rudenko@...il.com>

[ Upstream commit c2611e479f5d9b05108270e1ab423955486b4457 ]

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.

Link: https://lore.kernel.org/linux-media/20211010175457.438627-1-mike.rudenko@gmail.com
Signed-off-by: Mikhail Rudenko <mike.rudenko@...il.com>
Reviewed-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 7474150b94ed3..560f928c37520 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,
-- 
2.34.1