When configuring gpio, we need to read initial values for activity and
step count. This function may fail due to i2c read errors.
Check the error code returned by mma9553_read_activity_stepcnt
and return the appropriate error in gpio config function.
Signed-off-by: Irina Tirdea <irina.tirdea@xxxxxxxxx>
Reported-by: Hartmut Knaack <knaack.h@xxxxxx>
---
drivers/iio/accel/mma9553.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
index 365a109..6f0a14b 100644
--- a/drivers/iio/accel/mma9553.c
+++ b/drivers/iio/accel/mma9553.c
@@ -363,9 +363,12 @@ static int mma9553_conf_gpio(struct mma9553_data *data)
return 0;
/* Save initial values for activity and stepcnt */
- if (activity_enabled || ev_step_detect->enabled)
- mma9553_read_activity_stepcnt(data, &data->activity,
- &data->stepcnt);
+ if (activity_enabled || ev_step_detect->enabled) {
+ ret = mma9553_read_activity_stepcnt(data, &data->activity,
+ &data->stepcnt);
+ if (ret < 0)
+ return ret;
+ }
ret = mma9551_gpio_config(data->client,
MMA9553_DEFAULT_GPIO_PIN,
--
1.9.1
--
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