iio: chemical: atlas-ph-sensor: use msleep() for long uncritical delays

usleep_range() uses hrtimers and provides no advantage over msleep()
for larger delays.

Cc: Nicholas Mc Guire <hofrat@osadl.org>
Link: http://lkml.org/lkml/2017/1/11/377
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Reviewed-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
index abfc4bb..a406ad3 100644 (file)
--- a/drivers/iio/chemical/atlas-ph-sensor.c
+++ b/drivers/iio/chemical/atlas-ph-sensor.c
@@ -61,9 +61,9 @@
 #define ATLAS_REG_ORP_CALIB_STATUS     0x0d
 #define ATLAS_REG_ORP_DATA             0x0e
 
-#define ATLAS_PH_INT_TIME_IN_US                450000
-#define ATLAS_EC_INT_TIME_IN_US                650000
-#define ATLAS_ORP_INT_TIME_IN_US       450000
+#define ATLAS_PH_INT_TIME_IN_MS                450
+#define ATLAS_EC_INT_TIME_IN_MS                650
+#define ATLAS_ORP_INT_TIME_IN_MS       450
 
 enum {
        ATLAS_PH_SM,
@@ -270,21 +270,21 @@ static struct atlas_device atlas_devices[] = {
                                .num_channels = 3,
                                .data_reg = ATLAS_REG_PH_DATA,
                                .calibration = &atlas_check_ph_calibration,
-                               .delay = ATLAS_PH_INT_TIME_IN_US,
+                               .delay = ATLAS_PH_INT_TIME_IN_MS,
        },
        [ATLAS_EC_SM] = {
                                .channels = atlas_ec_channels,
                                .num_channels = 5,
                                .data_reg = ATLAS_REG_EC_DATA,
                                .calibration = &atlas_check_ec_calibration,
-                               .delay = ATLAS_EC_INT_TIME_IN_US,
+                               .delay = ATLAS_EC_INT_TIME_IN_MS,
        },
        [ATLAS_ORP_SM] = {
                                .channels = atlas_orp_channels,
                                .num_channels = 2,
                                .data_reg = ATLAS_REG_ORP_DATA,
                                .calibration = &atlas_check_orp_calibration,
-                               .delay = ATLAS_ORP_INT_TIME_IN_US,
+                               .delay = ATLAS_ORP_INT_TIME_IN_MS,
        },
 };
 
@@ -393,7 +393,7 @@ static int atlas_read_measurement(struct atlas_data *data, int reg, __be32 *val)
        }
 
        if (suspended)
-               usleep_range(data->chip->delay, data->chip->delay + 100000);
+               msleep(data->chip->delay);
 
        ret = regmap_bulk_read(data->regmap, reg, (u8 *) val, sizeof(*val));