dmaengine: ti: omap-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>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20230919133207.1400430-53-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/ti/omap-dma.c b/drivers/dma/ti/omap-dma.c
index cf96cf915c0c7483a6edf3e46048c90b8fc43a76..76db0fc19524d43fec5b098b088447aea96cc37e 100644 (file)
--- a/drivers/dma/ti/omap-dma.c
+++ b/drivers/dma/ti/omap-dma.c
@@ -1844,7 +1844,7 @@ static int omap_dma_probe(struct platform_device *pdev)
        return rc;
 }
 
-static int omap_dma_remove(struct platform_device *pdev)
+static void omap_dma_remove(struct platform_device *pdev)
 {
        struct omap_dmadev *od = platform_get_drvdata(pdev);
        int irq;
@@ -1869,8 +1869,6 @@ static int omap_dma_remove(struct platform_device *pdev)
                dma_pool_destroy(od->desc_pool);
 
        omap_dma_free(od);
-
-       return 0;
 }
 
 static const struct omap_dma_config omap2420_data = {
@@ -1918,7 +1916,7 @@ MODULE_DEVICE_TABLE(of, omap_dma_match);
 
 static struct platform_driver omap_dma_driver = {
        .probe  = omap_dma_probe,
-       .remove = omap_dma_remove,
+       .remove_new = omap_dma_remove,
        .driver = {
                .name = "omap-dma-engine",
                .of_match_table = omap_dma_match,