From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sun, 18 Mar 2018 14:18:10 +0000 (+0100)
Subject: video: rk3399_mipi: correct error checking
X-Git-Tag: v2018.05-rc1~5^2~8
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=fca10453cf51a34ddd0e6bf9c509cdabaa3d1f85;p=u-boot

video: rk3399_mipi: correct error checking

Pointers are never negative. Use macro IS_ERR() for checking.
cf. rk3288_mipi.c

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
---

diff --git a/drivers/video/rockchip/rk3399_mipi.c b/drivers/video/rockchip/rk3399_mipi.c
index 9ef202bf09..c6987ff042 100644
--- a/drivers/video/rockchip/rk3399_mipi.c
+++ b/drivers/video/rockchip/rk3399_mipi.c
@@ -128,7 +128,7 @@ static int rk_mipi_ofdata_to_platdata(struct udevice *dev)
 	struct rk_mipi_priv *priv = dev_get_priv(dev);
 
 	priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
-	if (priv->grf <= 0) {
+	if (!priv->grf || IS_ERR(priv->grf)) {
 		debug("%s: Get syscon grf failed (ret=%p)\n",
 		      __func__, priv->grf);
 		return  -ENXIO;