From: Krzysztof Kozlowski <krzk@kernel.org>
Date: Thu, 27 Aug 2020 07:11:07 +0000 (+0200)
Subject: drm/tve200: Fix handling of platform_get_irq() error
X-Git-Tag: rel_imx_5.10.35_2.0.0-somdevices.0~491^2~711
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=172b7228a31f5b4a991a599f43e0630c48d5d725;p=linux.git

drm/tve200: Fix handling of platform_get_irq() error

[ Upstream commit 77bb5aaf2bb8180e7d1bb70b4df306f511707a7d ]

platform_get_irq() returns -ERRNO on error.  In such case comparison
to 0 would pass the check.

Fixes: 179c02fe90a4 ("drm/tve200: Add new driver for TVE200")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200827071107.27429-2-krzk@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c
index c3aa39bd38ec..b5259cb1383f 100644
--- a/drivers/gpu/drm/tve200/tve200_drv.c
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -200,8 +200,8 @@ static int tve200_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
-		ret = -EINVAL;
+	if (irq < 0) {
+		ret = irq;
 		goto clk_disable;
 	}