DC regression in 4.17 broke suspend to RAM

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Hi Leo,


commit e277adc5a06c "drm/amd/display: Hookup color management functions"
broke suspend to RAM on my development system with a Tonga and a Turks
(using the radeon driver). It sometimes, but not always happens when
trying to suspend from the GNOME login screen in Wayland mode (I first
noticed the problem when that started happening automatically after a
timeout). I can reproduce it reliably by logging into a GNOME on Wayland
session and suspending from there.

The BUG_ON added by this commit triggers during suspend, see below. This
prevents the suspend (and later system shutdown as well) from
completing.


[  783.704303] kernel BUG at drivers/gpu/drm//amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4642!
[  783.704317] invalid opcode: 0000 [#1] SMP NOPTI
[  783.704321] Modules linked in: fuse lz4 lz4_compress cpufreq_powersave cpufreq_userspace cpufreq_conservative binfmt_misc sunrpc amdkfd(O) nls_ascii nls_cp437 vfat amdgpu(O) radeon(O) fat edac_mce_amd snd_hda_codec_realtek snd_hda_codec_generic kvm irqbypass chash(O) snd_hda_codec_hdmi crct10dif_pclmul gpu_sched(O) crc32_pclmul ttm(O) snd_hda_intel ghash_clmulni_intel wmi_bmof pcbc snd_hda_codec drm_kms_helper(O) snd_hda_core snd_hwdep aesni_intel aes_x86_64 crypto_simd glue_helper snd_pcm efi_pstore drm(O) i2c_algo_bit r8169 snd_timer k10temp fb_sys_fops cryptd mii pcspkr sg efivars syscopyarea sp5100_tco sysfillrect snd sysimgblt soundcore ccp i2c_piix4 rng_core wmi acpi_cpufreq button tcp_bbr sch_fq nct6775 hwmon_vid efivarfs ip_tables x_tables autofs4 ext4 crc32c_generic crc16 mbcache jbd2 fscrypto
[  783.704423]  dm_mod raid10 raid1 raid0 multipath linear md_mod sd_mod evdev hid_generic usbhid hid ahci xhci_pci libahci xhci_hcd libata crc32c_intel usbcore scsi_mod shpchp gpio_amdpt gpio_generic
[  783.704458] CPU: 0 PID: 2009 Comm: gnome-shell Tainted: G        W  O     4.16.10+ #315
[  783.704461] Hardware name: Micro-Star International Co., Ltd. MS-7A34/B350 TOMAHAWK (MS-7A34), BIOS 1.80 09/13/2017
[  783.704542] RIP: 0010:dm_update_crtcs_state+0x3b8/0x440 [amdgpu]
[  783.704546] RSP: 0018:ffffb53f884e7ad0 EFLAGS: 00010246
[  783.704552] RAX: 0000000000000000 RBX: ffff91c623f90000 RCX: 00000000000016cd
[  783.704555] RDX: 00000000000016cc RSI: ffff91c62e626160 RDI: 0000000000026160
[  783.704559] RBP: ffff91c5bbd42000 R08: 0000000000000001 R09: 0000000000000000
[  783.704562] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[  783.704566] R13: ffff91c62759b400 R14: ffff91c5b9d2c800 R15: ffff91c616212240
[  783.704570] FS:  00007f5032522ac0(0000) GS:ffff91c62e600000(0000) knlGS:0000000000000000
[  783.704574] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  783.704578] CR2: 0000039936735a60 CR3: 00000003bbea2000 CR4: 00000000003406f0
[  783.704581] Call Trace:
[  783.704661]  amdgpu_dm_atomic_check+0x1b5/0x430 [amdgpu]
[  783.704669]  ? mark_held_locks+0x50/0x80
[  783.704675]  ? find_held_lock+0x2d/0x90
[  783.704700]  drm_atomic_check_only+0x370/0x570 [drm]
[  783.704725]  drm_atomic_commit+0x13/0x50 [drm]
[  783.704746]  drm_atomic_connector_commit_dpms+0xe5/0xf0 [drm]
[  783.704767]  set_property_atomic+0xb4/0x130 [drm]
[  783.704793]  drm_mode_obj_set_property_ioctl+0xf6/0x1b0 [drm]
[  783.704813]  ? drm_mode_obj_find_prop_id+0x40/0x40 [drm]
[  783.704829]  drm_ioctl_kernel+0x5b/0xb0 [drm]
[  783.704848]  drm_ioctl+0x2d8/0x390 [drm]
[  783.704867]  ? drm_mode_obj_find_prop_id+0x40/0x40 [drm]
[  783.704875]  ? __pm_runtime_resume+0x54/0x90
[  783.704882]  ? trace_hardirqs_on_caller+0xed/0x180
[  783.704929]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[  783.704938]  do_vfs_ioctl+0xa5/0x6e0
[  783.704946]  ? __fget+0x105/0x1f0
[  783.704953]  SyS_ioctl+0x74/0x80
[  783.704960]  do_syscall_64+0x76/0x1b0
[  783.704967]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[  783.704972] RIP: 0033:0x7f502f617f07
[  783.704976] RSP: 002b:00007ffeb81033d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  783.704981] RAX: ffffffffffffffda RBX: 0000561ca2ab61e0 RCX: 00007f502f617f07
[  783.704984] RDX: 00007ffeb8103410 RSI: 00000000c01864ba RDI: 000000000000000b
[  783.704987] RBP: 00007ffeb8103400 R08: 0000000000000003 R09: 0000000000000002
[  783.704990] R10: 0000561ca2ab0bc8 R11: 0000000000000246 R12: 00007ffeb8103410
[  783.704994] R13: 00000000c01864ba R14: 000000000000000b R15: 00007f503195ebb0
[  783.705002] Code: 44 24 18 c6 00 01 0f 85 bb fd ff ff e9 bf fd ff ff 41 0f b6 45 0a a8 0e 0f 84 25 fd ff ff 48 c7 04 24 00 00 00 00 e9 e5 fd ff ff <0f> 0b 48 83 bb e0 12 00 00 00 0f 84 f3 fe ff ff 48 83 3c 24 00
[  783.705152] RIP: dm_update_crtcs_state+0x3b8/0x440 [amdgpu] RSP: ffffb53f884e7ad0



-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer


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