From: Chris Wilson Date: Sat, 15 May 2010 08:57:03 +0000 (+0100) Subject: drm/i915: Kill dangerous pending-flip debugging X-Git-Tag: v2.6.35-rc2~56^2~26 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9908ff736adf261e749b4887486a32ffa209304c;p=pandora-kernel.git drm/i915: Kill dangerous pending-flip debugging We can, by virtue of a vblank interrupt firing in the middle of setting up the unpin work (i.e. after we set the unpin_work field and before we write to the ringbuffer) enter intel_finish_page_flip() prior to receiving the pending flip notification. Therefore we can expect to hit intel_finish_page_flip() under normal circumstances without a pending flip and even without installing the pending_flip_obj. This is exacerbated by aperture thrashing whilst binding the framebuffer References: Bug 28079 - "glresize" causes kernel panic in intel_finish_page_flip. https://bugs.freedesktop.org/show_bug.cgi?id=28079 Reported-by: Nick Bowler Signed-off-by: Chris Wilson Cc: Jesse Barnes Cc: stable@kernel.org Reviewed-by: Jesse Barnes Signed-off-by: Eric Anholt --- Reading git-diff-tree failed