The driver registers the poll helper but has no output plug handler
registered. Therefor kms_hotplug_event doesn't trigger any configuration
changes on the framebuffer. The initial configuration setup, after
drm_kms_helper_poll_init is started, will also be missed. This is
running the framebuffer unusable. We fix it by assigning
drm_fb_helper_output_poll_changed to output_pull_changed.
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
v1 -> v2: - improved the commit message
- deleted unnecessary move of drm_kms_helper_poll_init.
It was a leftover from using drm_fbdev_cma_hotplug_event
which is also calling drm_fb_helper_hotplug_event
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 1207ffe362505..b8b93e8be1975 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -94,6 +94,7 @@ void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb)
static const struct drm_mode_config_funcs mxsfb_mode_config_funcs = {
.fb_create = drm_gem_fb_create,
+ .output_poll_changed = drm_fb_helper_output_poll_changed,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
--
2.16.1
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