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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2023-10-08 22:01:29 +0200
committerMiquel Raynal <miquel.raynal@bootlin.com>2023-10-16 10:56:47 +0200
commit56b877dc5fd7503958d84b5341bc6f8704e5b41a (patch)
tree35b1213357311ef121e169869dee7c410a4946bd /drivers/mtd/devices
parent09a8b9ccffe7ff80cdd04930e0d2b45d34a19f74 (diff)
downloadlwn-56b877dc5fd7503958d84b5341bc6f8704e5b41a.tar.gz
lwn-56b877dc5fd7503958d84b5341bc6f8704e5b41a.zip
mtd: powernv_flash: Convert to platform remove callback returning void
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> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Tudor Ambarus <tudor.ambarus@linaro.org> Link: https://lore.kernel.org/linux-mtd/20231008200143.196369-7-u.kleine-koenig@pengutronix.de
Diffstat (limited to 'drivers/mtd/devices')
-rw-r--r--drivers/mtd/devices/powernv_flash.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c
index 36e060386e59..66044f4f5bad 100644
--- a/drivers/mtd/devices/powernv_flash.c
+++ b/drivers/mtd/devices/powernv_flash.c
@@ -265,14 +265,12 @@ static int powernv_flash_probe(struct platform_device *pdev)
*
* Returns 0
*/
-static int powernv_flash_release(struct platform_device *pdev)
+static void powernv_flash_release(struct platform_device *pdev)
{
struct powernv_flash *data = dev_get_drvdata(&(pdev->dev));
/* All resources should be freed automatically */
WARN_ON(mtd_device_unregister(&data->mtd));
-
- return 0;
}
static const struct of_device_id powernv_flash_match[] = {
@@ -285,7 +283,7 @@ static struct platform_driver powernv_flash_driver = {
.name = "powernv_flash",
.of_match_table = powernv_flash_match,
},
- .remove = powernv_flash_release,
+ .remove_new = powernv_flash_release,
.probe = powernv_flash_probe,
};