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mailbox: mailbox-test: 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() will be 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>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Uwe Kleine-König 2023-12-27 22:02:32 +01:00 committed by Jassi Brar
parent a0c313d08d
commit bf562bc5a8
1 changed files with 2 additions and 4 deletions
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6
drivers/mailbox/mailbox-test.c
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@ -418,7 +418,7 @@ static int mbox_test_probe(struct platform_device *pdev)
return 0;
}
static int mbox_test_remove(struct platform_device *pdev)
static void mbox_test_remove(struct platform_device *pdev)
{
struct mbox_test_device *tdev = platform_get_drvdata(pdev);
@ -428,8 +428,6 @@ static int mbox_test_remove(struct platform_device *pdev)
mbox_free_channel(tdev->tx_channel);
if (tdev->rx_channel)
mbox_free_channel(tdev->rx_channel);
return 0;
}
static const struct of_device_id mbox_test_match[] = {
@ -444,7 +442,7 @@ static struct platform_driver mbox_test_driver = {
.of_match_table = mbox_test_match,
},
.probe = mbox_test_probe,
.remove = mbox_test_remove,
.remove_new = mbox_test_remove,
};
module_platform_driver(mbox_test_driver);