| Message ID | 20231008200143.196369-17-u.kleine-koenig@pengutronix.de |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [01/20] mtd: rawnand: txx9ndfmc: Mark driver struct with __refdata to prevent section mismatch warning | expand |
On Sun, 2023-10-08 at 20:01:39 UTC, =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= wrote: > 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> Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next, thanks. Miquel
diff --git a/drivers/mtd/maps/sa1100-flash.c b/drivers/mtd/maps/sa1100-flash.c index d3d4e987c163..d4ce2376d33f 100644 --- a/drivers/mtd/maps/sa1100-flash.c +++ b/drivers/mtd/maps/sa1100-flash.c @@ -285,19 +285,17 @@ static int sa1100_mtd_probe(struct platform_device *pdev) return err; } -static int sa1100_mtd_remove(struct platform_device *pdev) +static void sa1100_mtd_remove(struct platform_device *pdev) { struct sa_info *info = platform_get_drvdata(pdev); struct flash_platform_data *plat = dev_get_platdata(&pdev->dev); sa1100_destroy(info, plat); - - return 0; } static struct platform_driver sa1100_mtd_driver = { .probe = sa1100_mtd_probe, - .remove = sa1100_mtd_remove, + .remove_new = sa1100_mtd_remove, .driver = { .name = "sa1100-mtd", },
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/mtd/maps/sa1100-flash.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)