[56/59] dma: xilinx: xdma: Convert to platform remove callback returning void

Commit Message

Uwe Kleine-König Sept. 19, 2023, 1:32 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/xilinx/xdma.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c
index e0bfd129d563..459e7b9838ed 100644
--- a/drivers/dma/xilinx/xdma.c
+++ b/drivers/dma/xilinx/xdma.c
@@ -841,7 +841,7 @@  EXPORT_SYMBOL(xdma_get_user_irq);
  * xdma_remove - Driver remove function
  * @pdev: Pointer to the platform_device structure
  */
-static int xdma_remove(struct platform_device *pdev)
+static void xdma_remove(struct platform_device *pdev)
 {
 	struct xdma_device *xdev = platform_get_drvdata(pdev);
 
@@ -850,8 +850,6 @@  static int xdma_remove(struct platform_device *pdev)
 
 	if (xdev->status & XDMA_DEV_STATUS_REG_DMA)
 		dma_async_device_unregister(&xdev->dma_dev);
-
-	return 0;
 }
 
 /**
@@ -966,7 +964,7 @@  static struct platform_driver xdma_driver = {
 	},
 	.id_table	= xdma_id_table,
 	.probe		= xdma_probe,
-	.remove		= xdma_remove,
+	.remove_new	= xdma_remove,
 };
 
 module_platform_driver(xdma_driver);