dmaengine: dw: platform: 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() is 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>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20230919133207.1400430-12-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index 47f2292dba983e920f3f799d8c47ed7726eae470..7d9d4c951724b1d36bb991ac76ef98a4924dd127 100644 (file)
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -93,7 +93,7 @@ err_dw_dma_probe:
        return err;
 }
 
-static int dw_remove(struct platform_device *pdev)
+static void dw_remove(struct platform_device *pdev)
 {
        struct dw_dma_chip_pdata *data = platform_get_drvdata(pdev);
        struct dw_dma_chip *chip = data->chip;
@@ -109,8 +109,6 @@ static int dw_remove(struct platform_device *pdev)
 
        pm_runtime_disable(&pdev->dev);
        clk_disable_unprepare(chip->clk);
-
-       return 0;
 }
 
 static void dw_shutdown(struct platform_device *pdev)
@@ -193,7 +191,7 @@ static const struct dev_pm_ops dw_dev_pm_ops = {
 
 static struct platform_driver dw_driver = {
        .probe          = dw_probe,
-       .remove         = dw_remove,
+       .remove_new     = dw_remove,
        .shutdown       = dw_shutdown,
        .driver = {
                .name   = DRV_NAME,