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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-09-19 19:49:12 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2023-09-23 15:06:55 +0100 |
| commit | b4785a25a969bc53773c6abb89f3592b7fd4fe9e (patch) | |
| tree | cf37e11913f8badb5c8619a533b1c27f010dc4fd | |
| parent | 3de9b0729567c873571090287baf45957efd5ba9 (diff) | |
| download | linux-b4785a25a969bc53773c6abb89f3592b7fd4fe9e.tar.gz linux-b4785a25a969bc53773c6abb89f3592b7fd4fe9e.tar.bz2 linux-b4785a25a969bc53773c6abb89f3592b7fd4fe9e.zip | |
iio: dac: lpc18xx_dac: 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() 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/20230919174931.1417681-31-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/dac/lpc18xx_dac.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/iio/dac/lpc18xx_dac.c b/drivers/iio/dac/lpc18xx_dac.c index 60467c6f2c6e..b3aa4443a6a4 100644 --- a/drivers/iio/dac/lpc18xx_dac.c +++ b/drivers/iio/dac/lpc18xx_dac.c @@ -165,7 +165,7 @@ dis_reg: return ret; } -static int lpc18xx_dac_remove(struct platform_device *pdev) +static void lpc18xx_dac_remove(struct platform_device *pdev) { struct iio_dev *indio_dev = platform_get_drvdata(pdev); struct lpc18xx_dac *dac = iio_priv(indio_dev); @@ -175,8 +175,6 @@ static int lpc18xx_dac_remove(struct platform_device *pdev) writel(0, dac->base + LPC18XX_DAC_CTRL); clk_disable_unprepare(dac->clk); regulator_disable(dac->vref); - - return 0; } static const struct of_device_id lpc18xx_dac_match[] = { @@ -187,7 +185,7 @@ MODULE_DEVICE_TABLE(of, lpc18xx_dac_match); static struct platform_driver lpc18xx_dac_driver = { .probe = lpc18xx_dac_probe, - .remove = lpc18xx_dac_remove, + .remove_new = lpc18xx_dac_remove, .driver = { .name = "lpc18xx-dac", .of_match_table = lpc18xx_dac_match, |