dmaengine: fsldma: 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/20230919133207.1400430-16-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index ddcf736d283d8775f14d5b509042053cdda2bb02..18a6c4bf6275c48ecb438c6a7d1f685fe4236af4 100644 (file)
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1306,7 +1306,7 @@ out_return:
        return err;
 }
 
-static int fsldma_of_remove(struct platform_device *op)
+static void fsldma_of_remove(struct platform_device *op)
 {
        struct fsldma_device *fdev;
        unsigned int i;
@@ -1324,8 +1324,6 @@ static int fsldma_of_remove(struct platform_device *op)
 
        iounmap(fdev->regs);
        kfree(fdev);
-
-       return 0;
 }
 
 #ifdef CONFIG_PM
@@ -1406,7 +1404,7 @@ static struct platform_driver fsldma_of_driver = {
 #endif
        },
        .probe = fsldma_of_probe,
-       .remove = fsldma_of_remove,
+       .remove_new = fsldma_of_remove,
 };
 
 /*----------------------------------------------------------------------------*/