On Wed, Nov 27, 2019 at 11:22:45AM +0100, Yannick Fertre wrote:
> From: Yannick Fertré <yannick.fertre@xxxxxx>
>
> Some bridges did not registered the post_disable function.
> To avoid a crash, check it before calling.
>
> Signed-off-by: Yannick Fertre <yannick.fertre@xxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> index cc806ba..1e37233 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
> @@ -886,7 +886,8 @@ static void dw_mipi_dsi_bridge_post_disable(struct drm_bridge *bridge)
> * This needs to be fixed in the drm_bridge framework and the API
> * needs to be updated to manage our own call chains...
> */
> - dsi->panel_bridge->funcs->post_disable(dsi->panel_bridge);
> + if (dsi->panel_bridge->funcs->post_disable)
> + dsi->panel_bridge->funcs->post_disable(dsi->panel_bridge);
>
> if (dsi->slave) {
> dw_mipi_dsi_disable(dsi->slave);
> --
> 2.7.4
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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