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Staging: olpc_dcon: change to msleep to usleep_range

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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>
This commit is contained in:
Jens Frederich 2013-07-25 22:06:32 +02:00 committed by Greg Kroah-Hartman
parent f4616af018
commit 5607ce90d7
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/olpc_dcon/olpc_dcon.c
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@ -131,13 +131,13 @@ static int dcon_bus_stabilize(struct dcon_priv *dcon, int is_powered_down)
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) {