twl4030-madc: Request processed values in twl4030_get_madc_conversion

commit e0326be0cded13dfc3a24cbeece1f1ae64348a0e upstream.

Not setting the raw parameter in the request causes it to be randomly
initialized to a value that might be different from zero or zero. This leads to
values that are randomly either raw or processed, making it very difficult to
make reliable use of the values.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index 7de1c4c87942326bbf11e7519ddfa17d29f263f9..eb86786e698eabf702655f9f974c9639956169c7 100644 (file)
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -645,6 +645,7 @@ int twl4030_get_madc_conversion(int channel_no)
        req.channels = (1 << channel_no);
        req.method = TWL4030_MADC_SW2;
        req.active = 0;
+       req.raw = 0;
        req.func_cb = NULL;
        ret = twl4030_madc_conversion(&req);
        if (ret < 0)