Commit 619036e2 authored Jan 31, 2013 by Lars-Peter Clausen Committed by Jonathan Cameron Feb 02, 2013

staging:iio:adxrs450: Use usleep_range for the sequential transfer dealy



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@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent 457b71df

drivers/staging/iio/gyro/adxrs450_core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}