dmaengine: bcm2835-dma: 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>
Link: https://lore.kernel.org/r/20230919133207.1400430-7-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index 0807fb9eb2626b8cfa358301ee344934ba393ba2..9d74fe97452e08d7f27f3b1b205dc72958ae15be 100644 (file)
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -1019,19 +1019,17 @@ err_no_dma:
        return rc;
 }
 
-static int bcm2835_dma_remove(struct platform_device *pdev)
+static void bcm2835_dma_remove(struct platform_device *pdev)
 {
        struct bcm2835_dmadev *od = platform_get_drvdata(pdev);
 
        dma_async_device_unregister(&od->ddev);
        bcm2835_dma_free(od);
-
-       return 0;
 }
 
 static struct platform_driver bcm2835_dma_driver = {
        .probe  = bcm2835_dma_probe,
-       .remove = bcm2835_dma_remove,
+       .remove_new = bcm2835_dma_remove,
        .driver = {
                .name = "bcm2835-dma",
                .of_match_table = of_match_ptr(bcm2835_dma_of_match),