diff options
| author |   Daniel Gomez <daniel@qtec.com> | 2022-09-25 23:53:13 +0200 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2022-10-06 11:54:35 -0400 |
| commit | 91954c6c904b515baafaee6a1f35c94409a3bb68 (patch) | |
| tree | 5d4c5f523845bf8d32fcc2b47b686b7efa1f8622 /drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | |
| parent | Merge tag 'amd-drm-next-6.1-2022-09-30' of https://gitlab.freedesktop.org/agd5f/linux into drm-next (diff) | |
| download | wireguard-linux-91954c6c904b515baafaee6a1f35c94409a3bb68.tar.xz wireguard-linux-91954c6c904b515baafaee6a1f35c94409a3bb68.zip | |
drm/amd/display: Fix mutex lock in dcn10
Removal of DC_FP_* wrappers from dml (9696679bf7ac) provokes a mutex
lock [2] on the amdgpu driver. Re-arrange the dcn10 code to avoid
locking the mutex by placing the DC_FP_* wrappers around the proper
functions.
This fixes the following WARN/stacktrace:
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:283
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 227, name: systemd-udevd
preempt_count: 1, expected: 0
CPU: 4 PID: 227 Comm: systemd-udevd Not tainted 6.0.0-rc6-qtec-standard #2
Hardware name: Qtechnology A/S QT5222/QT5221, BIOS v1.0.1 06/07/2021
Call Trace:
<TASK>
dump_stack_lvl+0x33/0x42
__might_resched.cold.172+0xa5/0xb3
mutex_lock+0x1a/0x40
amdgpu_dpm_get_clock_by_type_with_voltage+0x38/0x70 [amdgpu]
dm_pp_get_clock_levels_by_type_with_voltage+0x64/0xa0 [amdgpu]
dcn_bw_update_from_pplib+0x70/0x340 [amdgpu]
dcn10_create_resource_pool+0x8c8/0xd20 [amdgpu]
? __kmalloc+0x1c7/0x4a0
dc_create_resource_pool+0xe7/0x190 [amdgpu]
dc_create+0x212/0x5d0 [amdgpu]
amdgpu_dm_init+0x246/0x370 [amdgpu]
? schedule_hrtimeout_range_clock+0x93/0x120
? phm_wait_for_register_unequal.part.1+0x4a/0x80 [amdgpu]
dm_hw_init+0xe/0x20 [amdgpu]
amdgpu_device_init.cold.56+0x1324/0x1653 [amdgpu]
? pci_bus_read_config_word+0x43/0x80
amdgpu_driver_load_kms+0x15/0x120 [amdgpu]
amdgpu_pci_probe+0x116/0x320 [amdgpu]
pci_device_probe+0x97/0x110
really_probe+0xdd/0x340
__driver_probe_device+0x80/0x170
driver_probe_device+0x1f/0x90
__driver_attach+0xdc/0x180
? __device_attach_driver+0x100/0x100
? __device_attach_driver+0x100/0x100
bus_for_each_dev+0x74/0xc0
bus_add_driver+0x19e/0x210
? kset_find_obj+0x30/0xa0
? 0xffffffffa0a5b000
driver_register+0x6b/0xc0
? 0xffffffffa0a5b000
do_one_initcall+0x4a/0x1f0
? __vunmap+0x28e/0x2f0
? __cond_resched+0x15/0x30
? kmem_cache_alloc_trace+0x3d/0x440
do_init_module+0x4a/0x1e0
load_module+0x1cba/0x1e10
? __do_sys_finit_module+0xb7/0x120
__do_sys_finit_module+0xb7/0x120
do_syscall_64+0x3c/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff2b5f5422d
Code: 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48
89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48>
3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 ab 0e 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc44ab28e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 0000555c566a9240 RCX: 00007ff2b5f5422d
RDX: 0000000000000000 RSI: 00007ff2b60bb353 RDI: 0000000000000019
RBP: 00007ff2b60bb353 R08: 0000000000000000 R09: 0000555c566a9240
R10: 0000000000000019 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000020000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Fixes: 9696679bf7ac ("drm/amd/display: remove DC_FP_* wrapper from dml folder")
Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Daniel Gomez <daniel@qtec.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 72521749c01d..4390f6d7050f 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -3005,6 +3005,7 @@ void dcn10_prepare_bandwidth( { struct dce_hwseq *hws = dc->hwseq; struct hubbub *hubbub = dc->res_pool->hubbub; + int min_fclk_khz, min_dcfclk_khz, socclk_khz; if (dc->debug.sanity_checks) hws->funcs.verify_allow_pstate_change_high(dc); @@ -3027,8 +3028,11 @@ void dcn10_prepare_bandwidth( if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) { DC_FP_START(); - dcn_bw_notify_pplib_of_wm_ranges(dc); + dcn_get_soc_clks( + dc, &min_fclk_khz, &min_dcfclk_khz, &socclk_khz); DC_FP_END(); + dcn_bw_notify_pplib_of_wm_ranges( + dc, min_fclk_khz, min_dcfclk_khz, socclk_khz); } if (dc->debug.sanity_checks) @@ -3041,6 +3045,7 @@ void dcn10_optimize_bandwidth( { struct dce_hwseq *hws = dc->hwseq; struct hubbub *hubbub = dc->res_pool->hubbub; + int min_fclk_khz, min_dcfclk_khz, socclk_khz; if (dc->debug.sanity_checks) hws->funcs.verify_allow_pstate_change_high(dc); @@ -3064,8 +3069,11 @@ void dcn10_optimize_bandwidth( if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) { DC_FP_START(); - dcn_bw_notify_pplib_of_wm_ranges(dc); + dcn_get_soc_clks( + dc, &min_fclk_khz, &min_dcfclk_khz, &socclk_khz); DC_FP_END(); + dcn_bw_notify_pplib_of_wm_ranges( + dc, min_fclk_khz, min_dcfclk_khz, socclk_khz); } if (dc->debug.sanity_checks) |