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authorCrt Mori <cmo@melexis.com>2016-09-05 11:14:49 +0200
committerJonathan Cameron <jic23@kernel.org>2016-09-05 22:09:38 +0200
commitfbe84bd4803eb6c96376af5530ce69e1db873b5f (patch)
tree0a486f49e18cee511fe61da8c1f1ce9833b19e01 /drivers/iio/adc/ad7266.c
parentiio: fetch and enable regulators unconditionally (diff)
downloadlinux-fbe84bd4803eb6c96376af5530ce69e1db873b5f.tar.xz
linux-fbe84bd4803eb6c96376af5530ce69e1db873b5f.zip
iio: devm_regulator_get_optional never returns NULL
This patch is inspired by a comment of Jonathan Cameron on patch of Linus Walleij commit aeb55fff3891834e07a3144159a7298a19696af8 ("iio: st_sensors: fetch and enable regulators unconditionally"). Because changes made in this patch are actually reference generators they should be using devm_regulator_get_optional, but if they do not explicitly set the reference to NULL they should not be using IS_ERR_OR_NULL, but simple IS_ERR check. Suggested-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Crt Mori <cmo@melexis.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/adc/ad7266.c')
-rw-r--r--drivers/iio/adc/ad7266.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index c0f6a98fd9bd..b8d5cfd57ec4 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -481,7 +481,7 @@ error_free_gpios:
if (!st->fixed_addr)
gpio_free_array(st->gpios, ARRAY_SIZE(st->gpios));
error_disable_reg:
- if (!IS_ERR_OR_NULL(st->reg))
+ if (!IS_ERR(st->reg))
regulator_disable(st->reg);
return ret;
@@ -496,7 +496,7 @@ static int ad7266_remove(struct spi_device *spi)
iio_triggered_buffer_cleanup(indio_dev);
if (!st->fixed_addr)
gpio_free_array(st->gpios, ARRAY_SIZE(st->gpios));
- if (!IS_ERR_OR_NULL(st->reg))
+ if (!IS_ERR(st->reg))
regulator_disable(st->reg);
return 0;