[PATCH] modesetting: Fix software cursor fallback

[Adel Gadllah]

The code in drmmode_set_cursor does not properly handle the case where
drmModeSetCursor2 returns any other error than EINVAL and silently fails to set
a cursor.

So only return when the drmModeSetCursor2 succeeds (i.e returns 0) and disable
the cursor2 usage on EINVAL.

References: https://bugzilla.redhat.com/show_bug.cgi?id=1205725
---
 hw/xfree86/drivers/modesetting/drmmode_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c b/hw/xfree86/drivers/modesetting/drmmode_display.c
index 824500b..912abda 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.c
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.c
@@ -396,10 +396,10 @@ drmmode_set_cursor(xf86CrtcPtr crtc)
             drmModeSetCursor2(drmmode->fd, drmmode_crtc->mode_crtc->crtc_id,
                               handle, ms->cursor_width, ms->cursor_height,
                               cursor->bits->xhot, cursor->bits->yhot);
+        if (!ret)
+            return;
         if (ret == -EINVAL)
             use_set_cursor2 = FALSE;
-        else
-            return;
     }
 
     ret = drmModeSetCursor(drmmode->fd, drmmode_crtc->mode_crtc->crtc_id, handle,
-- 
2.1.0