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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-09-19 16:31:31 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 10:40:50 +0300 |
| commit | 97283173effa6e53ea698726ea5d07f7ca06e5cf (patch) | |
| tree | acb8c35d97bcfce059a5451591765d06d254843c /drivers/dma/mediatek/mtk-hsdma.c | |
| parent | bdeb61f5180efc920cf55b966a2a30bc2336d6d4 (diff) | |
| download | linux-97283173effa6e53ea698726ea5d07f7ca06e5cf.tar.xz | |
dmaengine: mediatek: mtk-hsdma: 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>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230919133207.1400430-24-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/mediatek/mtk-hsdma.c')
| -rw-r--r-- | drivers/dma/mediatek/mtk-hsdma.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/dma/mediatek/mtk-hsdma.c b/drivers/dma/mediatek/mtk-hsdma.c index 64120767d983..36ff11e909ea 100644 --- a/drivers/dma/mediatek/mtk-hsdma.c +++ b/drivers/dma/mediatek/mtk-hsdma.c @@ -1009,7 +1009,7 @@ err_unregister: return err; } -static int mtk_hsdma_remove(struct platform_device *pdev) +static void mtk_hsdma_remove(struct platform_device *pdev) { struct mtk_hsdma_device *hsdma = platform_get_drvdata(pdev); struct mtk_hsdma_vchan *vc; @@ -1034,13 +1034,11 @@ static int mtk_hsdma_remove(struct platform_device *pdev) dma_async_device_unregister(&hsdma->ddev); of_dma_controller_free(pdev->dev.of_node); - - return 0; } static struct platform_driver mtk_hsdma_driver = { .probe = mtk_hsdma_probe, - .remove = mtk_hsdma_remove, + .remove_new = mtk_hsdma_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = mtk_hsdma_match, |