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

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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>
This commit is contained in:
Lars-Peter Clausen 2013-01-31 14:27:00 +00:00 committed by Jonathan Cameron
parent 457b71df27
commit 619036e216
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/iio/gyro/adxrs450_core.c
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@ -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;
}