From: Jens Frederich Date: Thu, 25 Jul 2013 20:06:32 +0000 (+0200) Subject: Staging: olpc_dcon: change to msleep to usleep_range X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5607ce90d727d2aaad93bd72551b97067141d68a;p=linux-beck.git 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c index 193e1c68bb45..7c460f2c0d23 100644 --- 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) {