From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Joseph Liu <kwliu@nuvoton.com>,
openbmc@lists.ozlabs.org, Marvin Lin <kflin@nuvoton.com>,
kernel@pengutronix.de, linux-media@vger.kernel.org
Subject: [PATCH 2/5] media: nuvoton: Convert to platform remove callback returning void
Date: Fri, 23 Feb 2024 13:59:05 +0100 [thread overview]
Message-ID: <21a291dc5ab4e21c380648621fea9de8ea55198b.1708692946.git.u.kleine-koenig@pengutronix.de> (raw)
In-Reply-To: <cover.1708692946.git.u.kleine-koenig@pengutronix.de>
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
drivers/media/platform/nuvoton/npcm-video.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
index a1fcb616b256..60fbb9140035 100644
--- a/drivers/media/platform/nuvoton/npcm-video.c
+++ b/drivers/media/platform/nuvoton/npcm-video.c
@@ -1785,7 +1785,7 @@ static int npcm_video_probe(struct platform_device *pdev)
return 0;
}
-static int npcm_video_remove(struct platform_device *pdev)
+static void npcm_video_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
@@ -1798,8 +1798,6 @@ static int npcm_video_remove(struct platform_device *pdev)
if (video->ece.enable)
npcm_video_ece_stop(video);
of_reserved_mem_device_release(dev);
-
- return 0;
}
static const struct of_device_id npcm_video_match[] = {
@@ -1816,7 +1814,7 @@ static struct platform_driver npcm_video_driver = {
.of_match_table = npcm_video_match,
},
.probe = npcm_video_probe,
- .remove = npcm_video_remove,
+ .remove_new = npcm_video_remove,
};
module_platform_driver(npcm_video_driver);
--
2.43.0
prev parent reply other threads:[~2024-02-23 13:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-23 12:59 [PATCH 0/5] media: Convert to platform remove callback returning void Uwe Kleine-König
2024-02-23 12:59 ` Uwe Kleine-König [this message]
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