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dmaengine: sh: usb-dmac: Convert to platform remove callback returning void

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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/20230919133207.1400430-43-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Uwe Kleine-König 2023-09-19 15:31:50 +02:00 committed by Vinod Koul
parent 384ba9a683
commit 9f2812a7fe
1 changed files with 2 additions and 4 deletions
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6
drivers/dma/sh/usb-dmac.c
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@ -866,7 +866,7 @@ static void usb_dmac_chan_remove(struct usb_dmac *dmac,
devm_free_irq(dmac->dev, uchan->irq, uchan);
}
static int usb_dmac_remove(struct platform_device *pdev)
static void usb_dmac_remove(struct platform_device *pdev)
{
struct usb_dmac *dmac = platform_get_drvdata(pdev);
int i;
@ -877,8 +877,6 @@ static int usb_dmac_remove(struct platform_device *pdev)
dma_async_device_unregister(&dmac->engine);
pm_runtime_disable(&pdev->dev);
return 0;
}
static void usb_dmac_shutdown(struct platform_device *pdev)
@ -901,7 +899,7 @@ static struct platform_driver usb_dmac_driver = {
.of_match_table = usb_dmac_of_ids,
},
.probe = usb_dmac_probe,
.remove = usb_dmac_remove,
.remove_new = usb_dmac_remove,
.shutdown = usb_dmac_shutdown,
};