6.1-stable review patch. If anyone has any objections, please let me know.
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From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
[ Upstream commit 59bd56760df17506bc2f828f19b40a2243edd0d0 ]
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/20231008200143.196369-10-u.kleine-koenig@p... Stable-dep-of: bf5821909eb9 ("mtd: hyperbus: hbmc-am654: fix an OF node reference leak") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mtd/hyperbus/hbmc-am654.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/hyperbus/hbmc-am654.c b/drivers/mtd/hyperbus/hbmc-am654.c index a6161ce340d4e..dbe3eb361cca2 100644 --- a/drivers/mtd/hyperbus/hbmc-am654.c +++ b/drivers/mtd/hyperbus/hbmc-am654.c @@ -229,7 +229,7 @@ static int am654_hbmc_probe(struct platform_device *pdev) return ret; }
-static int am654_hbmc_remove(struct platform_device *pdev) +static void am654_hbmc_remove(struct platform_device *pdev) { struct am654_hbmc_priv *priv = platform_get_drvdata(pdev); struct am654_hbmc_device_priv *dev_priv = priv->hbdev.priv; @@ -241,8 +241,6 @@ static int am654_hbmc_remove(struct platform_device *pdev)
if (dev_priv->rx_chan) dma_release_channel(dev_priv->rx_chan); - - return 0; }
static const struct of_device_id am654_hbmc_dt_ids[] = { @@ -256,7 +254,7 @@ MODULE_DEVICE_TABLE(of, am654_hbmc_dt_ids);
static struct platform_driver am654_hbmc_platform_driver = { .probe = am654_hbmc_probe, - .remove = am654_hbmc_remove, + .remove_new = am654_hbmc_remove, .driver = { .name = "hbmc-am654", .of_match_table = am654_hbmc_dt_ids,