Lukas Wunner aa0aad5790 drm/amdgpu: Fix deadlock on runtime suspend ... amdgpu's ->runtime_suspend hook calls drm_kms_helper_poll_disable(), which waits for the output poll worker to finish if it's running. The output poll worker meanwhile calls pm_runtime_get_sync() in amdgpu's ->detect hooks, which waits for the ongoing suspend to finish, causing a deadlock. Fix by not acquiring a runtime PM ref if the ->detect hooks are called in the output poll worker's context. This is safe because the poll worker is only enabled while runtime active and we know that ->runtime_suspend waits for it to finish. Fixes: d38ceaf99e ("drm/amdgpu: add core driver (v4)") Cc: stable@vger.kernel.org # v4.2+: 27d4ee0307: workqueue: Allow retrieval of current task's work struct Cc: stable@vger.kernel.org # v4.2+: 25c058ccaf: drm: Allow determining if current task is output poll worker Cc: Alex Deucher <alexander.deucher@amd.com> Tested-by: Mike Lothian <mike@fireburn.co.uk> Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: https://patchwork.freedesktop.org/patch/msgid/4c9bf72aacae1eef062bd134cd112e0770a7f121.1518338789.git.lukas@wunner.de		2018-02-16 22:40:23 +01:00
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acp	drm/amdgpu: add license to Makefiles	2017-12-04 11:47:55 -05:00
amdgpu	drm/amdgpu: Fix deadlock on runtime suspend	2018-02-16 22:40:23 +01:00
amdkfd	drm/amdgpu: add license to Makefiles	2017-12-04 11:47:55 -05:00
display	drm/amd/display: call set csc_default if enable adjustment is false	2018-01-02 14:53:27 -05:00
include	amdgpu DC display code for Vega.	2017-11-17 14:34:42 -08:00
lib	drm/amdgpu: add license to Makefiles	2017-12-04 11:47:55 -05:00
powerplay	drm/amdgpu: add license to files where it was missing	2017-12-04 11:48:24 -05:00
scheduler	drm/amdgpu: add license to files where it was missing	2017-12-04 11:48:24 -05:00