Hi,
+CC possible victims
On 10/02/2014 12:52 PM, Inki Dae wrote:
On 2014년 10월 02일 17:58, Joonyoung Shim wrote:
Hi Andrzej,
On 10/01/2014 05:14 PM, Andrzej Hajda wrote:
The patch disables vblanks during dpms off only if pagefilp has not been finished. It also replaces drm_vblank_off with drm_crtc_vblank_put. It fixes issue with page_flip ioctl not being able to acquire vblank counter.
This problem isn't related with pageflip, it just causes from 7ffd7a68511c710b84db3548a1997fd2625f580a commit (drm: Always reject drm_vblank_get() after drm_vblank_off()).
We need to use drm_vblank_on() as a counterpart to drm_vblank_off() after the commit .
This patch should break also other drivers, it seems at least following drms could be affected: armada, sti, tegra.
I guess after disabling and re-enabling crtc vblanks should stop working, unless there are other bugs.
Regards Andrzej