Evan Quan 114f088727 drm/amd/pm: fix the deadlock issue observed on SI ... The adev->pm.mutx is already held at the beginning of amdgpu_dpm_compute_clocks/amdgpu_dpm_enable_uvd/amdgpu_dpm_enable_vce. But on their calling path, amdgpu_display_bandwidth_update will be called and thus its sub functions amdgpu_dpm_get_sclk/mclk. They will then try to acquire the same adev->pm.mutex and deadlock will occur. By placing amdgpu_display_bandwidth_update outside of adev->pm.mutex protection(considering logically they do not need such protection) and restructuring the call flow accordingly, we can eliminate the deadlock issue. This comes with no real logics change. Fixes: 3712e7a494 ("drm/amd/pm: unified lock protections in amdgpu_dpm.c") Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Reported-by: Arthur Marsh <arthur.marsh@internode.on.net> Link: https://lore.kernel.org/all/9e689fea-6c69-f4b0-8dee-32c4cf7d8f9c@molgen.mpg.de/ BugLink: https://gitlab.freedesktop.org/drm/amd/-/issues/1957 Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>		2022-04-22 14:50:23 -04:00
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inc	drm/amdgpu: expand cg_flags from u32 to u64	2022-04-08 17:24:24 -04:00
legacy-dpm	drm/amd/pm: fix the deadlock issue observed on SI	2022-04-22 14:50:23 -04:00
powerplay	drm/amd/pm: fix the deadlock issue observed on SI	2022-04-22 14:50:23 -04:00
swsmu	amdgpu/pm: Clarify documentation of error handling in send_smc_mesg	2022-04-19 13:58:32 -04:00
amdgpu_dpm_internal.c	drm/amd/pm: add missing prototypes to amdgpu_dpm_internal	2022-02-07 18:03:50 -05:00
amdgpu_dpm.c	drm/amd/pm: fix the deadlock issue observed on SI	2022-04-22 14:50:23 -04:00
amdgpu_pm.c	drm/amdgpu: expand cg_flags from u32 to u64	2022-04-08 17:24:24 -04:00
Makefile	drm/amd/pm: relocate the power related headers	2022-01-14 17:51:14 -05:00