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Commit 5607ce90 authored by Jens Frederich's avatar Jens Frederich Committed by Greg Kroah-Hartman
Browse files

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: default avatarJens Frederich <jfrederich@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f4616af0

drivers/staging/olpc_dcon/olpc_dcon.c

+2 −2
Original line number Diff line number Diff line
@@ -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) {