| commit | 792293cfd516a173bbd687b4b26da0f97f97abd2 | |
| author | Mario Kleiner <mario.kleiner.de@gmail.com> | |
| Fri, 6 May 2016 17:26:05 +0000 (6 19:26 +0200) | ||
| committer | Eric Anholt <eric@anholt.net> | |
| Tue, 31 May 2016 22:15:29 +0000 (31 15:15 -0700) | ||
| tree | 30e94637c6d650e1ef362c1802b7f72fa2e98412 | treesnapshot (tar.gz zip) |
| parent | 1a695a905c18548062509178b98bc91e67510864 | commitdiff |
drm/vc4: Fix get_vblank_counter with proper no-op for Linux 4.4+
get_vblank_counter hooked up to drm_vblank_count() which alway was
non-sensical but didn't hurt in the past. Since Linux 4.4 it
triggers a WARN_ON_ONCE in drm_update_vblank_count on first vblank
irq disable, so fix it by hooking to drm_vblank_no_hw_counter().
Tested against Raspian kernel 4.4.8 tree on RPi 2B.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Fixes: c8b75bca92cb ("drm/vc4: Add KMS support for Raspberry Pi.")
get_vblank_counter hooked up to drm_vblank_count() which alway was
non-sensical but didn't hurt in the past. Since Linux 4.4 it
triggers a WARN_ON_ONCE in drm_update_vblank_count on first vblank
irq disable, so fix it by hooking to drm_vblank_no_hw_counter().
Tested against Raspian kernel 4.4.8 tree on RPi 2B.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Fixes: c8b75bca92cb ("drm/vc4: Add KMS support for Raspberry Pi.")
| drivers/gpu/drm/vc4/vc4_drv.c | diffblobblamehistory |