diff mbox series

[v3,19/62] mmc: meson-gx: Convert to platform remove callback returning void

Message ID 20230727070051.17778-19-frank.li@vivo.com
State New
Headers
Series [v3,01/62] mmc: sunxi: Convert to platform remove callback returning void |

Commit Message

李扬韬 July 27, 2023, 7 a.m. UTC 
  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 (mostly) ignored
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.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Yangtao Li <frank.li@vivo.com>
---
 drivers/mmc/host/meson-gx-mmc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Comments

Martin Blumenstingl July 29, 2023, 7:01 p.m. UTC | #1 
On Thu, Jul 27, 2023 at 9:01 AM Yangtao Li <frank.li@vivo.com> 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 (mostly) ignored
> 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.
>
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
>
> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> Signed-off-by: Yangtao Li <frank.li@vivo.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
diff mbox series

Patch

diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index d652374f37b2..a2601d0ece71 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -1294,7 +1294,7 @@  static int meson_mmc_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int meson_mmc_remove(struct platform_device *pdev)
+static void meson_mmc_remove(struct platform_device *pdev)
 {
 	struct meson_host *host = dev_get_drvdata(&pdev->dev);
 
@@ -1305,8 +1305,6 @@  static int meson_mmc_remove(struct platform_device *pdev)
 	free_irq(host->irq, host);
 
 	clk_disable_unprepare(host->mmc_clk);
-
-	return 0;
 }
 
 static const struct meson_mmc_data meson_gx_data = {
@@ -1337,7 +1335,7 @@  MODULE_DEVICE_TABLE(of, meson_mmc_of_match);
 
 static struct platform_driver meson_mmc_driver = {
 	.probe		= meson_mmc_probe,
-	.remove		= meson_mmc_remove,
+	.remove_new	= meson_mmc_remove,
 	.driver		= {
 		.name = DRIVER_NAME,
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,