[44/59] dma: st_fdma: 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/st_fdma.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/dma/st_fdma.c b/drivers/dma/st_fdma.c
index d95c421877fb..145bd0f2496e 100644
--- a/drivers/dma/st_fdma.c
+++ b/drivers/dma/st_fdma.c
@@ -849,15 +849,13 @@  static int st_fdma_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int st_fdma_remove(struct platform_device *pdev)
+static void st_fdma_remove(struct platform_device *pdev)
 {
 	struct st_fdma_dev *fdev = platform_get_drvdata(pdev);
 
 	devm_free_irq(&pdev->dev, fdev->irq, fdev);
 	st_slim_rproc_put(fdev->slim_rproc);
 	of_dma_controller_free(pdev->dev.of_node);
-
-	return 0;
 }
 
 static struct platform_driver st_fdma_platform_driver = {
@@ -866,7 +864,7 @@  static struct platform_driver st_fdma_platform_driver = {
 		.of_match_table = st_fdma_match,
 	},
 	.probe = st_fdma_probe,
-	.remove = st_fdma_remove,
+	.remove_new = st_fdma_remove,
 };
 module_platform_driver(st_fdma_platform_driver);