[Freedreno] [PATCH v2] drm: msm: fix error check return value of irq_of_parse_and_map()

[cgel . zte]

From: Lv Ruyi <lv.r...@zte.com.cn>

The irq_of_parse_and_map() function returns 0 on failure, and does not
return an negative value.

Reported-by: Zeal Robot <zea...@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.r...@zte.com.cn>
---
v2: don't print irq, and return ERR_PTR(-EINVAL)
---
 drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c 
b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
index 3b92372e7bdf..44e395e59df9 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c
@@ -570,9 +570,9 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev)
        }
 
        irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
-       if (irq < 0) {
-               ret = irq;
-               DRM_DEV_ERROR(&pdev->dev, "failed to get irq: %d\n", ret);
+       if (!irq) {
+               ret = -EINVAL;
+               DRM_DEV_ERROR(&pdev->dev, "failed to get irq\n");
                goto fail;
        }
 
-- 
2.25.1