Xi Ruoyao 319c1d420a drm/i915: Ensure plane->state->fb stays in sync with plane->fb ... plane->state->fb and plane->fb should always reference the same FB so that atomic and legacy codepaths have the same view of display state. However, there are some places in kernel code that directly set plane->fb and neglect to update plane->state->fb. If we never do a successful update through the atomic pipeline, the RmFB cleanup code will look at the plane->state->fb pointer, which has never actually been set to a legitimate value, and try to clean it up, leading to BUG's. Add a quick helper function to synchronize plane->state->fb with plane->fb and call it everywhere the driver tries to manually set plane->fb outside of the atomic pipeline. In this function, use drm_atomic_set_fb_for_plane instead of writing plane->state->fb directly to keep the reference count right. This is modified from Matt Roper's patch to drm-intel-nightly with commit id commit afd65eb4cc Author: Matt Roper <matthew.d.roper@intel.com> Date: Tue Feb 3 13:10:04 2015 -0800 drm/i915: Ensure plane->state->fb stays in sync with plane->fb However this bug exists in mainline kernel too, so I created this to fix it in mainline kernel. A minor change is to use drm_atomic_set_fb_for_plane instead of update reference count manually. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88909 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=93711 Signed-off-by: Xi Ruoyao <xry111@outlook.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> [Jani: included the patch notes in the commit message] Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2015-03-16 11:13:57 +02:00
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drm	drm/i915: Ensure plane->state->fb stays in sync with plane->fb	2015-03-16 11:13:57 +02:00
host1x	gpu: host1x: Provide a proper struct bus_type	2015-01-27 10:09:14 +01:00
ipu-v3	gpu: ipu-v3: do not divide by zero if the pixel clock is too large	2015-02-23 17:18:59 +01:00
vga	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-10-13 16:23:15 +02:00
Makefile	gpu: host1x: Provide a proper struct bus_type	2015-01-27 10:09:14 +01:00