Re: [PATCH 0/3] drm/fsl-dcu: fix driver remove/DRM unload
From: Stefan Agner
Date: Wed Nov 16 2016 - 20:05:45 EST
On 2016-10-19 17:32, Stefan Agner wrote:
> Hi All,
> The first patch is a better alternative to the previously posted
> patch ("drm/fsl-dcu: only init fbdev if required") as suggested
> by Daniel.
> The second and third are fix related issue uncovered during tests
> with bind/unbind:
> echo 40058000.dcu > /sys/bus/platform/drivers/fsl-dcu/unbind
> echo 40058000.dcu > /sys/bus/platform/drivers/fsl-dcu/bind
> Especially the third patch I am not sure if that is a reasonable
> strategy to fix the issue. I did not saw another SoC DRM driver
> which is making use of drm_crtc_force_disable_all...
> Also, when the X Server is running (with modesetting driver) I
> still get a warning:
> WARNING: CPU: 0 PID: 452 at drivers/gpu/drm/drm_crtc.c:1154
> The comment says it is the drivers fault, but as far as I can
> tell it is user space which does not free up this framebuffers.
> Is there something missing in my driver?
> Any ideas?
> Stefan Agner (3):
> drm/fb_cma_helper: do not free fbdev if there is none
> drm/fsl-dcu: unload driver before disabling clocks
> drm/fsl-dcu: disable outputs before unloading driver
> drivers/gpu/drm/drm_fb_cma_helper.c | 3 ++-
> drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 3 ++-
> 2 files changed, 4 insertions(+), 2 deletions(-)
Applied 2/3 to my for-next branch.