The adxrs450 requires a delay of at least 0.1 ms between register writes. Using msleep() for such small delays is not recommended. So use usleep_range instead. Fixes the following checkpatch warning: WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt + msleep(1); Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx> --- drivers/staging/iio/gyro/adxrs450_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/gyro/adxrs450_core.c b/drivers/staging/iio/gyro/adxrs450_core.c index ea10f84..4115fe1 100644 --- a/drivers/staging/iio/gyro/adxrs450_core.c +++ b/drivers/staging/iio/gyro/adxrs450_core.c @@ -101,7 +101,7 @@ static int adxrs450_spi_write_reg_16(struct iio_dev *indio_dev, if (ret) dev_err(&st->us->dev, "problem while writing 16 bit register 0x%02x\n", reg_address); - msleep(1); /* enforce sequential transfer delay 0.1ms */ + usleep_range(100, 1000); /* enforce sequential transfer delay 0.1ms */ mutex_unlock(&st->buf_lock); return ret; } -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
