Staging: olpc_dcon: change to msleep to usleep_range

The resolution of msleep is related to HZ, so with HZ set to
100 any msleep of less then 10ms will become ~10ms. This is
not what we want. Use usleep_range to get more control of
what is happening here.

Signed-off-by: Jens Frederich <jfrederich@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c
index 193e1c6..7c460f2 100644 (file)
--- a/drivers/staging/olpc_dcon/olpc_dcon.c
+++ b/drivers/staging/olpc_dcon/olpc_dcon.c
@@ -131,13 +131,13 @@ power_up:
                        pr_warn("unable to force dcon to power up: %d!\n", x);
                        return x;
                }
-               msleep(10); /* we'll be conservative */
+               usleep_range(10000, 11000);  /* we'll be conservative */
        }
 
        pdata->bus_stabilize_wiggle();
 
        for (x = -1, timeout = 50; timeout && x < 0; timeout--) {
-               msleep(1);
+               usleep_range(1000, 1100);
                x = dcon_read(dcon, DCON_REG_ID);
        }
        if (x < 0) {