diff mbox series

[21/59] dma: mcf-edma-main: Convert to platform remove callback returning void

Message ID 20230919133207.1400430-22-u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Commit 48236cb8314238917788f73353290dd1afb9a7c6
Headers show
Series dma: Convert to platform remove callback returning void | expand

Commit Message

Uwe Kleine-König Sept. 19, 2023, 1:31 p.m. UTC 
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>
---
 drivers/dma/mcf-edma-main.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/dma/mcf-edma-main.c b/drivers/dma/mcf-edma-main.c
index b359421ee9ea..ab21455d9c3a 100644
--- a/drivers/dma/mcf-edma-main.c
+++ b/drivers/dma/mcf-edma-main.c
@@ -255,15 +255,13 @@  static int mcf_edma_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int mcf_edma_remove(struct platform_device *pdev)
+static void mcf_edma_remove(struct platform_device *pdev)
 {
 	struct fsl_edma_engine *mcf_edma = platform_get_drvdata(pdev);
 
 	mcf_edma_irq_free(pdev, mcf_edma);
 	fsl_edma_cleanup_vchan(&mcf_edma->dma_dev);
 	dma_async_device_unregister(&mcf_edma->dma_dev);
-
-	return 0;
 }
 
 static struct platform_driver mcf_edma_driver = {
@@ -271,7 +269,7 @@  static struct platform_driver mcf_edma_driver = {
 		.name	= "mcf-edma",
 	},
 	.probe		= mcf_edma_probe,
-	.remove		= mcf_edma_remove,
+	.remove_new	= mcf_edma_remove,
 };
 
 bool mcf_edma_filter_fn(struct dma_chan *chan, void *param)