From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 25 Sep 2017 13:25:20 +0300
Subject: drm/tve200: Check for IS_ERR instead of NULL in probe
Git-commit: 44390ef519006b13c8fab9eb13abac909342a585
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

devm_ioremap_resource() returns error pointer, it never returns NULL on
error.

Fixes: 179c02fe90a4 ("drm/tve200: Add new driver for TVE200")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170925102520.a7spymwqqbsczzz2@mwanda

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/tve200/tve200_drv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/tve200/tve200_drv.c
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -225,7 +225,7 @@ static int tve200_probe(struct platform_
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	priv->regs = devm_ioremap_resource(dev, res);
-	if (!priv->regs) {
+	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "%s failed mmio\n", __func__);
 		ret = -EINVAL;
 		goto clk_disable;