From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Tue, 25 Feb 2014 11:43:42 +0000 (+0100)
Subject: imx-drm: ipu-dc: Use usleep_range instead of msleep
X-Git-Tag: v3.15-rc1~139^2~856
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=1f15b69b597087937f370179661cc468f46ce545;p=users%2Fhch%2Fdma-mapping.git

imx-drm: ipu-dc: Use usleep_range instead of msleep

Since msleep(2) can sleep up to 20ms anyway, make this explicit by using
usleep_range(2000, 20000).

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-dc.c b/drivers/staging/imx-drm/ipu-v3/ipu-dc.c
index d0e3bc3c53e7..d5de8bb5c803 100644
--- a/drivers/staging/imx-drm/ipu-v3/ipu-dc.c
+++ b/drivers/staging/imx-drm/ipu-v3/ipu-dc.c
@@ -262,7 +262,7 @@ void ipu_dc_disable_channel(struct ipu_dc *dc)
 
 	/* Wait for DC triple buffer to empty */
 	while ((readl(priv->dc_reg + DC_STAT) & val) != val) {
-		msleep(2);
+		usleep_range(2000, 20000);
 		timeout -= 2;
 		if (timeout <= 0)
 			break;