[Freedreno] [PATCH] drm/msm/dsi: fix irq_of_parse_and_map() error checking

[Dan Carpenter]

The irq_of_parse_and_map() function returns zero on error.  It
never returns negative error codes.  Fix the check.

Fixes: a689554ba6ed ("drm/msm: Initial add DSI connector support")
Signed-off-by: Dan Carpenter <dan.carpen...@linaro.org>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c 
b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 5d9ec27c89d3..13da53737a6a 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1894,10 +1894,9 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
        }
 
        msm_host->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
-       if (msm_host->irq < 0) {
-               ret = msm_host->irq;
-               dev_err(&pdev->dev, "failed to get irq: %d\n", ret);
-               return ret;
+       if (!msm_host->irq) {
+               dev_err(&pdev->dev, "failed to get irq\n");
+               return -EINVAL;
        }
 
        /* do not autoenable, will be enabled later */
-- 
2.39.2