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 c3aa39b..b5259cb 100644 (file)
--- 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;
        }