dmaengine: xilinx: zynqmp_dma: 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/20230919133207.1400430-60-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
index bd8c3cc2eaab6f84e5485d9e4b9a9d36e86003b7..f31631bef961a979c0de5515391b0572e18a2ee0 100644 (file)
--- a/drivers/dma/xilinx/zynqmp_dma.c
+++ b/drivers/dma/xilinx/zynqmp_dma.c
@@ -1147,7 +1147,7 @@ err_disable_pm:
  *
  * Return: Always '0'
  */
-static int zynqmp_dma_remove(struct platform_device *pdev)
+static void zynqmp_dma_remove(struct platform_device *pdev)
 {
        struct zynqmp_dma_device *zdev = platform_get_drvdata(pdev);
 
@@ -1158,8 +1158,6 @@ static int zynqmp_dma_remove(struct platform_device *pdev)
        pm_runtime_disable(zdev->dev);
        if (!pm_runtime_enabled(zdev->dev))
                zynqmp_dma_runtime_suspend(zdev->dev);
-
-       return 0;
 }
 
 static const struct of_device_id zynqmp_dma_of_match[] = {
@@ -1175,7 +1173,7 @@ static struct platform_driver zynqmp_dma_driver = {
                .pm = &zynqmp_dma_dev_pm_ops,
        },
        .probe = zynqmp_dma_probe,
-       .remove = zynqmp_dma_remove,
+       .remove_new = zynqmp_dma_remove,
 };
 
 module_platform_driver(zynqmp_dma_driver);