dmaengine: ppc4xx: adma: 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/20230919133207.1400430-33-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c
index f9b82dff33871c35a9291f65b68320838fba9f27..bbb60a970dabdcdcab588a8173dd4fa1bc4cf884 100644 (file)
--- a/drivers/dma/ppc4xx/adma.c
+++ b/drivers/dma/ppc4xx/adma.c
@@ -4230,7 +4230,7 @@ out:
 /**
  * ppc440spe_adma_remove - remove the asynch device
  */
-static int ppc440spe_adma_remove(struct platform_device *ofdev)
+static void ppc440spe_adma_remove(struct platform_device *ofdev)
 {
        struct ppc440spe_adma_device *adev = platform_get_drvdata(ofdev);
        struct device_node *np = ofdev->dev.of_node;
@@ -4278,7 +4278,6 @@ static int ppc440spe_adma_remove(struct platform_device *ofdev)
        of_address_to_resource(np, 0, &res);
        release_mem_region(res.start, resource_size(&res));
        kfree(adev);
-       return 0;
 }
 
 /*
@@ -4550,7 +4549,7 @@ MODULE_DEVICE_TABLE(of, ppc440spe_adma_of_match);
 
 static struct platform_driver ppc440spe_adma_driver = {
        .probe = ppc440spe_adma_probe,
-       .remove = ppc440spe_adma_remove,
+       .remove_new = ppc440spe_adma_remove,
        .driver = {
                .name = "PPC440SP(E)-ADMA",
                .of_match_table = ppc440spe_adma_of_match,