[PATCH] drm/omap: dsi: Fix deferred probe warnings

[Tony Lindgren]

We may not have dsi->dsidev initialized during probe, and that can
lead into various dsi related warnings as omap_dsi_host_detach() gets
called with dsi->dsidev set to NULL.

The warnings can be "Fixed dependency cycle(s)" followed by a
WARNING: CPU: 0 PID: 787 at drivers/gpu/drm/omapdrm/dss/dsi.c:4414.

Let's fix the warnings by checking for a valid dsi->dsidev.

Signed-off-by: Tony Lindgren <t...@atomide.com>
---
 drivers/gpu/drm/omapdrm/dss/dsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c 
b/drivers/gpu/drm/omapdrm/dss/dsi.c
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -4411,7 +4411,7 @@ static int omap_dsi_host_detach(struct mipi_dsi_host 
*host,
 {
        struct dsi_data *dsi = host_to_omap(host);
 
-       if (WARN_ON(dsi->dsidev != client))
+       if (dsi->dsidev && WARN_ON(dsi->dsidev != client))
                return -EINVAL;
 
        cancel_delayed_work_sync(&dsi->dsi_disable_work);
-- 
2.40.0