[PATCH v3 1/7] drm: exynos: dsi: Check panel for panel helpers

[Jagan Teki]

Trigger the panel operation helpers only if host found the panel.

Add check.

Signed-off-by: Jagan Teki <ja...@amarulasolutions.com>
---
Changes for v3:
- none
Changes for v2:
- new patch 

 drivers/gpu/drm/exynos/exynos_drm_dsi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c 
b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 8d137857818c..0bb44e476633 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1439,7 +1439,8 @@ static void exynos_dsi_disable(struct drm_encoder 
*encoder)
 
        dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE;
 
-       drm_panel_disable(dsi->panel);
+       if (dsi->panel)
+               drm_panel_disable(dsi->panel);
 
        list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
                if (iter->funcs->disable)
@@ -1447,7 +1448,8 @@ static void exynos_dsi_disable(struct drm_encoder 
*encoder)
        }
 
        exynos_dsi_set_display_enable(dsi, false);
-       drm_panel_unprepare(dsi->panel);
+       if (dsi->panel)
+               drm_panel_unprepare(dsi->panel);
 
        list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {
                if (iter->funcs->post_disable)
-- 
2.25.1