igt@gem_exec_suspend@basic-s0@smem - dmesg-warn - *ERROR* Lost access to MMIO BAR; all registers now read back as 0xFFFFFFFF!, Unclaimed access detected before read from register 0x45404

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11922/fi-ehl-2/igt@gem_exec_suspend@basic-s0@smem.html

7> [499.343175] i915 0000:00:02.0: [drm:icl_verify_procmon_ref_values [i915]] Combo PHY A Voltage/Process Info : 0.85V dot0 (low-voltage)
<7> [499.343582] i915 0000:00:02.0: [drm:bxt_enable_dc9 [i915]] Enabling DC9
<7> [499.343906] i915 0000:00:02.0: [drm:gen9_set_dc_state.part.15 [i915]] Setting DC state from 00 to 08
<3> [499.346916] snd_hda_intel 0000:00:1f.3: no codecs initialized
<7> [499.349780] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_3
<3> [499.350438] i915 0000:00:02.0: [drm] *ERROR* Lost access to MMIO BAR; all registers now read back as 0xFFFFFFFF!
<7> [499.350823] i915 0000:00:02.0: [drm:fwtable_read32 [i915]] Unclaimed access detected before read from register 0x45404
<3> [499.351243] i915 0000:00:02.0: [drm] *ERROR* Lost access to MMIO BAR; all registers now read back as 0xFFFFFFFF!
<4> [499.351253] ------------[ cut here ]------------
<4> [499.351261] i915 0000:00:02.0: Unclaimed read from register 0x45404
<4> [499.351326] WARNING: CPU: 3 PID: 5671 at drivers/gpu/drm/i915/intel_uncore.c:1681 __unclaimed_reg_debug+0x68/0x80 [i915]
<4> [499.351703] Modules linked in: snd_hda_intel i915 drm_display_helper drm_kms_helper vgem drm_shmem_helper snd_hda_codec_hdmi snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm prime_numbers ttm drm_buddy syscopyarea sysfillrect sysimgblt fb_sys_fops fuse x86_pkg_temp_thermal coretemp kvm_intel kvm mcs7830 usbnet irqbypass mii crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mei_me i2c_i801 i2c_smbus mei intel_lpss_pci [last unloaded: drm_kms_helper]
<4> [499.351986] CPU: 3 PID: 5671 Comm: kworker/3:5 Tainted: G     U            5.19.0-rc7-CI_DRM_11922-g778142c0a2a4+ #1
<4> [499.352012] Hardware name: Intel Corporation Elkhart Lake Embedded Platform/ElkhartLake LPDDR4x T3 CRB, BIOS EHLSFWI1.R00.2463.A05.2011261125 11/26/2020
<4> [499.352021] Workqueue: events azx_probe_work [snd_hda_intel]
<4> [499.352041] RIP: 0010:__unclaimed_reg_debug+0x68/0x80 [i915]
<4> [499.352312] Code: 08 4c 8b 6f 50 4d 85 ed 75 03 4c 8b 2f e8 c0 78 0a e1 41 89 e8 4c 89 e1 4c 89 ea 48 89 c6 48 c7 c7 08 bf 8f a0 e8 10 54 43 e1 <0f> 0b 48 8b 43 08 83 a8 74 0d 00 00 01 eb a0 66 0f 1f 84 00 00 00
<4> [499.352321] RSP: 0018:ffffc90000cf3be0 EFLAGS: 00010082
<4> [499.352334] RAX: 0000000000000000 RBX: ffff8881a61b0ef0 RCX: 0000000000000003