This fixes an issue that was noticed on an optimus/prime laptop with a kernel that was old enough to not support the integrated intel gfx (which was driving all the outputs), but did have support for the discrete radeon gpu. The end result was not falling back to VESA and leaving the user with a black screen.
(Plus it is kind of silly to create an framebuffer device if there are no outputs hooked up to the gpu.)
Signed-off-by: Rob Clark robdclark@gmail.com --- drivers/gpu/drm/radeon/radeon_display.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 1eca0ac..f8e776c 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -1670,8 +1670,10 @@ int radeon_modeset_init(struct radeon_device *rdev) /* setup afmt */ radeon_afmt_init(rdev);
- radeon_fbdev_init(rdev); - drm_kms_helper_poll_init(rdev->ddev); + if (!list_empty(&rdev->ddev->mode_config.connector_list)) { + radeon_fbdev_init(rdev); + drm_kms_helper_poll_init(rdev->ddev); + }
/* do pm late init */ ret = radeon_pm_late_init(rdev);