[PATCH AUTOSEL 4.4 16/21] iio: adc: ad799x: fix probe error handling

From: Sasha Levin
Date: Fri Oct 18 2019 - 18:11:40 EST


From: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>

[ Upstream commit c62dd44901cfff12acc5792bf3d2dec20bcaf392 ]

Since commit 0f7ddcc1bff1 ("iio:adc:ad799x: Write default config on probe
and reset alert status on probe") the error path is wrong since it
leaves the vref regulator on. Fix this by disabling both regulators.

Fixes: 0f7ddcc1bff1 ("iio:adc:ad799x: Write default config on probe and reset alert status on probe")
Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iio/adc/ad799x.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index ba82de25a7972..46681e399e226 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -822,10 +822,10 @@ static int ad799x_probe(struct i2c_client *client,

ret = ad799x_write_config(st, st->chip_config->default_config);
if (ret < 0)
- goto error_disable_reg;
+ goto error_disable_vref;
ret = ad799x_read_config(st);
if (ret < 0)
- goto error_disable_reg;
+ goto error_disable_vref;
st->config = ret;

ret = iio_triggered_buffer_setup(indio_dev, NULL,
--
2.20.1