4.5-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alex Deucher <alexander.deuc...@amd.com> commit e5f243bd2edd95c6cc1d90c1878f821068e83fba upstream. Move all the logic to radeon_fb.c and add checks to functions called frome elsewhere. bug: https://bugzilla.kernel.org/show_bug.cgi?id=112781 Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/gpu/drm/radeon/radeon_display.c | 6 ++---- drivers/gpu/drm/radeon/radeon_fb.c | 19 +++++++++++++++---- 2 files changed, 17 insertions(+), 8 deletions(-) --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -1683,10 +1683,8 @@ int radeon_modeset_init(struct radeon_de /* setup afmt */ radeon_afmt_init(rdev); - if (!list_empty(&rdev->ddev->mode_config.connector_list)) { - radeon_fbdev_init(rdev); - drm_kms_helper_poll_init(rdev->ddev); - } + radeon_fbdev_init(rdev); + drm_kms_helper_poll_init(rdev->ddev); /* do pm late init */ ret = radeon_pm_late_init(rdev); --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -292,7 +292,8 @@ out_unref: void radeon_fb_output_poll_changed(struct radeon_device *rdev) { - drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); + if (rdev->mode_info.rfbdev) + drm_fb_helper_hotplug_event(&rdev->mode_info.rfbdev->helper); } static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev) @@ -325,6 +326,10 @@ int radeon_fbdev_init(struct radeon_devi int bpp_sel = 32; int ret; + /* don't enable fbdev if no connectors */ + if (list_empty(&rdev->ddev->mode_config.connector_list)) + return 0; + /* select 8 bpp console on RN50 or 16MB cards */ if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024)) bpp_sel = 8; @@ -377,11 +382,15 @@ void radeon_fbdev_fini(struct radeon_dev void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state) { - fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state); + if (rdev->mode_info.rfbdev) + fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state); } bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj) { + if (!rdev->mode_info.rfbdev) + return false; + if (robj == gem_to_radeon_bo(rdev->mode_info.rfbdev->rfb.obj)) return true; return false; @@ -389,12 +398,14 @@ bool radeon_fbdev_robj_is_fb(struct rade void radeon_fb_add_connector(struct radeon_device *rdev, struct drm_connector *connector) { - drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector); + if (rdev->mode_info.rfbdev) + drm_fb_helper_add_one_connector(&rdev->mode_info.rfbdev->helper, connector); } void radeon_fb_remove_connector(struct radeon_device *rdev, struct drm_connector *connector) { - drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); + if (rdev->mode_info.rfbdev) + drm_fb_helper_remove_one_connector(&rdev->mode_info.rfbdev->helper, connector); } void radeon_fbdev_restore_mode(struct radeon_device *rdev)
