From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Mon, 21 Oct 2013 03:34:07 +0000 (+0800)
Subject: drm/tegra: Fix return value check
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=85316eae487fd7e1535860f3b1b2f9d3996d08db;p=openwrt%2Fstaging%2Fblogic.git

drm/tegra: Fix return value check

In case of error, the devm_ioremap_resource() function returns ERR_PTR()
and never NULL. The NULL test in the return value check should therefore
be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 84a73e32214f..844818f3e2d5 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -886,8 +886,8 @@ static int tegra_dsi_probe(struct platform_device *pdev)
 
 	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	dsi->regs = devm_ioremap_resource(&pdev->dev, regs);
-	if (!dsi->regs)
-		return -EADDRNOTAVAIL;
+	if (IS_ERR(dsi->regs))
+		return PTR_ERR(dsi->regs);
 
 	tegra_dsi_initialize(dsi);