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23 October 2021, 00:29:24 UTC
Revision b6610101718d4ab90d793c482625e98eb1262cad authored by Maarten Lankhorst on 03 March 2015, 08:56:42 UTC, committed by Alex Deucher on 11 March 2015, 12:30:35 UTC 
drm/radeon: fix wait to actually occur after the signaling callback
 
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 <maarten.lankhorst@ubuntu.com>
Reported-by: Jon Arne Jørgensen <jonjon.arnearne@gmail.com>
Reported-and-tested-by: Gustaw Smolarczyk <wielkiegie@gmail.com>
Cc: stable@vger.kernel.org (v3.18+)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 parent cd961bb
History
Tip revision: b6610101718d4ab90d793c482625e98eb1262cad authored by Maarten Lankhorst on 03 March 2015, 08:56:42 UTC
drm/radeon: fix wait to actually occur after the signaling callback
Tip revision: b661010
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