[REGRESSION] "ALSA: HDA: Early Forbid of runtime PM" broke my laptop's internal audio

[藍挺瑋]

I am not sure if I should join this old thread, but it seems that I saw the same
issue on my ASUS B23E laptop. It couldn't produce any sound after upgrading to
Linux 5.10, and 'git bisect' shows it was broken by the same commit
a0645daf16101bb9a6d87598c17e9a8b7bd60ea7.

I have tested the latest master branch (v5.14-rc4-322-gcceb634774ef) last week.
It still had no sound. If I reverted the broken commit, sound worked.

alsa-info from the broken kernel:
https://gist.github.com/lantw44/0660e059c488e3ff3d841bb03b371866

alsa-info from the working kernel:
https://gist.github.com/lantw44/9367f425e4f5ba98cf12343cb90f3301

lspci:
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM
Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset
Family MEI Controller #1 (rev 04)
00:16.3 Serial controller: Intel Corporation 6 Series/C200 Series Chipset Family
KT Controller (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network
Connection (Lewisville) (rev 05)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family
USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High
Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI
Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI
Express Root Port 2 (rev b5)
00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI
Express Root Port 3 (rev b5)
00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI
Express Root Port 4 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family
USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation QM67 Express Chipset LPC Controller (rev
05)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6
port Mobile SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus
Controller (rev 05)
02:00.0 Network controller: Intel Corporation Centrino Advanced-N 6230 [Rainbow
Peak] (rev 34)
06:00.0 USB controller: Fresco Logic FL1000G USB 3.0 Host Controller (rev 04)