[PATCH] drm/msm/dp: Fix platform_get_irq() check

[Dan Carpenter]

The platform_get_irq() function returns negative error codes.  It never
returns zero.  Fix the check accordingly.

Fixes: 82c2a5751227 ("drm/msm/dp: tie dp_display_irq_handler() with dp driver")
Signed-off-by: Dan Carpenter <dan.carpen...@linaro.org>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c 
b/drivers/gpu/drm/msm/dp/dp_display.c
index 61b7103498a7..d80cb3d14c6b 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1166,9 +1166,9 @@ static int dp_display_request_irq(struct 
dp_display_private *dp)
        struct platform_device *pdev = dp->dp_display.pdev;
 
        dp->irq = platform_get_irq(pdev, 0);
-       if (!dp->irq) {
+       if (dp->irq < 0) {
                DRM_ERROR("failed to get irq\n");
-               return -EINVAL;
+               return dp->irq;
        }
 
        rc = devm_request_irq(&pdev->dev, dp->irq, dp_display_irq_handler,
-- 
2.42.0