Files
linux/drivers
Mario Kleiner 792293cfd5 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: c8b75bca92 ("drm/vc4: Add KMS support for Raspberry Pi.")
2016-05-31 15:15:29 -07:00
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