[PATCH 5/6] drm/exynos: dsi: use IS_ERR() to check devm_ioremap_resource() results

[Jingoo Han]

devm_ioremap_resource() retunrs an error pointer, not NULL. Thus,
the result should be checked with IS_ERR().

Signed-off-by: Jingoo Han <jg1.han at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_dsi.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index ae81124..84661fe 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1465,9 +1465,9 @@ static int exynos_dsi_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	dsi->reg_base = devm_ioremap_resource(&pdev->dev, res);
-	if (!dsi->reg_base) {
+	if (IS_ERR(dsi->reg_base)) {
 		dev_err(&pdev->dev, "failed to remap io region\n");
-		return -EADDRNOTAVAIL;
+		return PTR_ERR(dsi->reg_base);
 	}
 
 	dsi->phy = devm_phy_get(&pdev->dev, "dsim");
-- 
1.7.10.4