From b6610101718d4ab90d793c482625e98eb1262cad Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Tue, 3 Mar 2015 09:56:42 +0100 Subject: [PATCH] drm/radeon: fix wait to actually occur after the signaling callback MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit A normal wait adds to the front of the tail. By doing something similar to fence_default_wait the fence code can run without racing. This is a complete fix for "panic on suspend from KDE with radeon", and a partial fix for "Radeon: System pauses on TAHITI". On tahiti si_irq_set needs to be fixed too, to completely flush the writes before radeon_fence_activity is called in radeon_fence_enable_signaling. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=90741 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=90861 Signed-off-by: Maarten Lankhorst Reported-by: Jon Arne Jørgensen Reported-and-tested-by: Gustaw Smolarczyk Cc: stable@vger.kernel.org (v3.18+) Signed-off-by: Alex Deucher --- Reading git-format-patch failed