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uio: fsl_elbc_gpcm: 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>
Link: https://lore.kernel.org/r/ca99d4e71054e8452f3cee6c016bf4f89bfc7eaa.1709933231.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2024-03-08 22:31:01 +01:00 committed by Greg Kroah-Hartman
parent 4bc4634eda
commit b2c6a73fb4
1 changed files with 2 additions and 4 deletions
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6
drivers/uio/uio_fsl_elbc_gpcm.c
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@ -427,7 +427,7 @@ out_err2:
return ret; return ret;
} }
static int uio_fsl_elbc_gpcm_remove(struct platform_device *pdev) static void uio_fsl_elbc_gpcm_remove(struct platform_device *pdev)
{ {
struct uio_info *info = platform_get_drvdata(pdev); struct uio_info *info = platform_get_drvdata(pdev);
struct fsl_elbc_gpcm *priv = info->priv; struct fsl_elbc_gpcm *priv = info->priv;
@ -438,8 +438,6 @@ static int uio_fsl_elbc_gpcm_remove(struct platform_device *pdev)
priv->shutdown(info, false); priv->shutdown(info, false);
iounmap(info->mem[0].internal_addr); iounmap(info->mem[0].internal_addr);
return 0;
} }
static const struct of_device_id uio_fsl_elbc_gpcm_match[] = { static const struct of_device_id uio_fsl_elbc_gpcm_match[] = {
@ -455,7 +453,7 @@ static struct platform_driver uio_fsl_elbc_gpcm_driver = {
.dev_groups = uio_fsl_elbc_gpcm_groups, .dev_groups = uio_fsl_elbc_gpcm_groups,
}, },
.probe = uio_fsl_elbc_gpcm_probe, .probe = uio_fsl_elbc_gpcm_probe,
.remove = uio_fsl_elbc_gpcm_remove, .remove_new = uio_fsl_elbc_gpcm_remove,
}; };
module_platform_driver(uio_fsl_elbc_gpcm_driver); module_platform_driver(uio_fsl_elbc_gpcm_driver);