mfd: ab8500-gpadc: Change to usleep_range() for greater resolution

The resolution of msleep is related to HZ, so with HZ set to
100 any msleep of less than 10ms will become ~10ms.

Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c
index 3fb1f40..bc0daf3 100644 (file)
--- a/drivers/mfd/ab8500-gpadc.c
+++ b/drivers/mfd/ab8500-gpadc.c
@@ -344,7 +344,7 @@ int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel)
                  * Delay might be needed for ABB8500 cut 3.0, if not, remove
                  * when hardware will be available
                  */
-                       msleep(1);
+                       usleep_range(1000, 1000);
                        break;
                }
                /* Intentional fallthrough */