[PATCH] drm/ast: Zero is missing in detect function

[ainux . wang]

From: "Ainux.Wang" <ainux.w...@gmail.com>

The function ast_get_modes() will also return 0, when it try to get the
edid, but it also do not get the edid.

Signed-off-by: Ainux.Wang <ainux.w...@gmail.com>
---
 drivers/gpu/drm/ast/ast_mode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index e5996ae03c49..b7dcf7821ec6 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -1299,7 +1299,7 @@ static enum drm_connector_status 
ast_connector_detect(struct drm_connector
        int r;
 
        r = ast_get_modes(connector);
-       if (r < 0)
+       if (r <= 0)
                return connector_status_disconnected;
 
        return connector_status_connected;
-- 
2.18.1