[38/59] dma: sf-pdma: sf-pdma: Convert to platform remove callback returning void

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 <[e-mail]>
---
 drivers/dma/sf-pdma/sf-pdma.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/dma/sf-pdma/sf-pdma.c b/drivers/dma/sf-pdma/sf-pdma.c
index d1c6956af452..3125a2f162b4 100644
--- a/drivers/dma/sf-pdma/sf-pdma.c
+++ b/drivers/dma/sf-pdma/sf-pdma.c
@@ -566,7 +566,7 @@  static int sf_pdma_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int sf_pdma_remove(struct platform_device *pdev)
+static void sf_pdma_remove(struct platform_device *pdev)
 {
 	struct sf_pdma *pdma = platform_get_drvdata(pdev);
 	struct sf_pdma_chan *ch;
@@ -584,8 +584,6 @@  static int sf_pdma_remove(struct platform_device *pdev)
 	}
 
 	dma_async_device_unregister(&pdma->dma_dev);
-
-	return 0;
 }
 
 static const struct of_device_id sf_pdma_dt_ids[] = {
@@ -597,7 +595,7 @@  MODULE_DEVICE_TABLE(of, sf_pdma_dt_ids);
 
 static struct platform_driver sf_pdma_driver = {
 	.probe		= sf_pdma_probe,
-	.remove		= sf_pdma_remove,
+	.remove_new	= sf_pdma_remove,
 	.driver		= {
 		.name	= "sf-pdma",
 		.of_match_table = sf_pdma_dt_ids,