iio: sx9500: rework error handling of raw readings

Fix error handling so that we can power the chip down even if a raw read
fails.

Reported-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com>
Acked-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
index 2042e375f8351de6dc04b0b6ae7861702d17c6cf..ba1cbbea22d71495b75102f17ad7085eb07cf1fe 100644 (file)
--- a/drivers/iio/proximity/sx9500.c
+++ b/drivers/iio/proximity/sx9500.c
@@ -329,20 +329,20 @@ static int sx9500_read_proximity(struct sx9500_data *data,
        else
                ret = sx9500_wait_for_sample(data);
 
-       if (ret < 0)
-               return ret;
-
        mutex_lock(&data->mutex);
 
-       ret = sx9500_read_prox_data(data, chan, val);
        if (ret < 0)
-               goto out;
+               goto out_dec_data_rdy;
 
-       ret = sx9500_dec_chan_users(data, chan->channel);
+       ret = sx9500_read_prox_data(data, chan, val);
        if (ret < 0)
-               goto out;
+               goto out_dec_data_rdy;
 
        ret = sx9500_dec_data_rdy_users(data);
+       if (ret < 0)
+               goto out_dec_chan;
+
+       ret = sx9500_dec_chan_users(data, chan->channel);
        if (ret < 0)
                goto out;
 
@@ -350,6 +350,8 @@ static int sx9500_read_proximity(struct sx9500_data *data,
 
        goto out;
 
+out_dec_data_rdy:
+       sx9500_dec_data_rdy_users(data);
 out_dec_chan:
        sx9500_dec_chan_users(data, chan->channel);
 out: