From 787f55c4d1842e5fb037a81bca9bd9d9fdfd46fe Mon Sep 17 00:00:00 2001 From: Daniel Baluta Date: Fri, 5 Jun 2015 14:03:13 +0300 Subject: [PATCH] iio: magnetometer: mmc35240: Use a smaller sleep value According to datasheet, Page 8, minimum wait time to complete measurement is 10ms. Adjusting this value will increase the userspace polling rate. Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240") Signed-off-by: Daniel Baluta Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/mmc35240.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c index 146ae66..7fdf906 100644 --- a/drivers/iio/magnetometer/mmc35240.c +++ b/drivers/iio/magnetometer/mmc35240.c @@ -219,7 +219,8 @@ static int mmc35240_take_measurement(struct mmc35240_data *data) return ret; if (reg_status & MMC35240_STATUS_MEAS_DONE_BIT) break; - msleep(20); + /* minimum wait time to complete measurement is 10 ms */ + usleep_range(10000, 11000); } if (tries < 0) { -- 2.7.4