From e2dae672a9d5e11856fe30ede63467c65f999a81 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzk@kernel.org>
Date: Thu, 27 Aug 2020 09:11:06 +0200
Subject: drm/mcde: Fix handling of platform_get_irq() error
Git-commit: e2dae672a9d5e11856fe30ede63467c65f999a81
Patch-mainline: v5.11-rc1
References: bsc#1152472 git-fixes
platform_get_irq() returns -ERRNO on error. In such case comparison
to 0 would pass the check.
Fixes: 5fc537bfd000 ("drm/mcde: Add new driver for ST-Ericsson MCDE")
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/20200827071107.27429-1-krzk@kernel.org
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/mcde/mcde_drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/mcde/mcde_drv.c
+++ b/drivers/gpu/drm/mcde/mcde_drv.c
@@ -331,8 +331,8 @@ static int mcde_probe(struct platform_device *pdev)
}
irq = platform_get_irq(pdev, 0);
- if (!irq) {
- ret = -EINVAL;
+ if (irq < 0) {
+ ret = irq;
goto clk_disable;
}