Re: [PATCH v1 2/4] iio: imu: inv_mpu6050: Unshadow error codes in ->store()

["Maxwell Doose" <maxwell@maxwelld.cc>]

On Thu Aug 13, 2026 at 2:16 AM CDT
Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:

> kstrtox() may return different error codes.
>
> Unshadow them in the ->store() callback to give better error report.
>
> While at it, add missing kstrtox.h inclusion.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
> index 5796896d54cd..38c3f3b398d4 100644
> --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
> +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
> @@ -13,6 +13,7 @@
>  #include <linux/irq.h>
>  #include <linux/interrupt.h>
>  #include <linux/acpi.h>
> +#include <linux/kstrtox.h>
>  #include <linux/platform_device.h>
>  #include <linux/regulator/consumer.h>
>  #include <linux/math64.h>
> @@ -1303,8 +1304,9 @@ inv_mpu6050_fifo_rate_store(struct device *dev, struct device_attribute *attr,
>  	struct inv_mpu6050_state *st = iio_priv(indio_dev);
>  	struct device *pdev = regmap_get_device(st->map);
>  
> -	if (kstrtoint(buf, 10, &fifo_rate))
> -		return -EINVAL;
> +	result = kstrtoint(buf, 10, &fifo_rate);
> +	if (result)
> +		return result;

I suppose result is what was being used before? Oh well doesn't seem
worth it to send a patch *just* to change to int ret.

Reviewed-by: Maxwell Doose <maxwell@maxwelld.cc>

thanks,
max


>  	if (fifo_rate < INV_MPU6050_MIN_FIFO_RATE ||
>  	    fifo_rate > INV_MPU6050_MAX_FIFO_RATE)
>  		return -EINVAL;