Commit 7ee3b7eb authored by Dragos Bogdan's avatar Dragos Bogdan Committed by Jonathan Cameron

iio: ad7793: Fix the serial interface reset

The serial interface can be reset by writing 32 consecutive 1s to the device.
'ret' was initialized correctly but its value was overwritten when
ad7793_check_platform_data() was called. Since a dedicated reset function
is present now, it should be used instead.

Fixes: 2edb769d ("iio:ad7793: Add support for the ad7798 and ad7799")
Signed-off-by: default avatarDragos Bogdan <>
Acked-by: default avatarLars-Peter Clausen <>
Cc: <>
Signed-off-by: default avatarJonathan Cameron <>
parent 7fc10de8
......@@ -257,7 +257,7 @@ static int ad7793_setup(struct iio_dev *indio_dev,
unsigned int vref_mv)
struct ad7793_state *st = iio_priv(indio_dev);
int i, ret = -1;
int i, ret;
unsigned long long scale_uv;
u32 id;
......@@ -266,7 +266,7 @@ static int ad7793_setup(struct iio_dev *indio_dev,
return ret;
/* reset the serial interface */
ret = spi_write(st->sd.spi, (u8 *)&ret, sizeof(ret));
ret = ad_sd_reset(&st->sd, 32);
if (ret < 0)
goto out;
usleep_range(500, 2000); /* Wait for at least 500us */
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