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coresight: stm: 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.

Fixes: 057256aaac ("coresight: stm: Move ACPI support from AMBA driver to platform driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/3fefa60744fc68c9c4b40aeb69e34cda22582c4b.1713858615.git.u.kleine-koenig@pengutronix.de
This commit is contained in:
Uwe Kleine-König 2024-04-23 10:07:00 +02:00 committed by Suzuki K Poulose
parent 971c2b107b
commit 981d5f92ca
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/hwtracing/coresight/coresight-stm.c
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@ -1013,18 +1013,17 @@ static int stm_platform_probe(struct platform_device *pdev)
return ret;
}
static int stm_platform_remove(struct platform_device *pdev)
static void stm_platform_remove(struct platform_device *pdev)
{
struct stm_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
if (WARN_ON(!drvdata))
return -ENODEV;
return;
__stm_remove(&pdev->dev);
pm_runtime_disable(&pdev->dev);
if (!IS_ERR_OR_NULL(drvdata->pclk))
clk_put(drvdata->pclk);
return 0;
}
#ifdef CONFIG_ACPI
@ -1037,7 +1036,7 @@ MODULE_DEVICE_TABLE(acpi, stm_acpi_ids);
static struct platform_driver stm_platform_driver = {
.probe = stm_platform_probe,
.remove = stm_platform_remove,
.remove_new = stm_platform_remove,
.driver = {
.name = "coresight-stm-platform",
.acpi_match_table = ACPI_PTR(stm_acpi_ids),