problem on reboot: pcieport 0000:00:1c:0: pciehp: Slot(0): No link

[Harald Dunkel <harri@afaics.de>]

Hi folks,

setup:
	kernel 5.18.14 (built from git)
	Qnap TS-559 Pro II, 4*3.5 HDD + 1 SSD, /boot is on USB stick
	Intel(R) Atom(TM) CPU D525
	Debian Sid

On a reboot after some runtime my Qnap TS-559 Pro II shuts down cleanly, but
after the kernel and initrd are loaded again it writes an endless stream of
messages to the console

pcieport 0000:00:1c:0: pciehp: Slot(0): Card present
pcieport 0000:00:1c:0: pciehp: Slot(0): No link
pcieport 0000:00:1c:0: pciehp: Slot(0): Card present
pcieport 0000:00:1c:0: pciehp: Slot(0): No link
pcieport 0000:00:1c:0: pciehp: Slot(0): Card present
pcieport 0000:00:1c:0: pciehp: Slot(0): No link
pcieport 0000:00:1c:0: pciehp: Slot(0): Card present
pcieport 0000:00:1c:0: pciehp: Slot(0): No link
pcieport 0000:00:1c:0: pciehp: Slot(0): Card present
pcieport 0000:00:1c:0: pciehp: Slot(0): No link
pcieport 0000:00:1c:0: pciehp: Slot(0): Card present
pcieport 0000:00:1c:0: pciehp: Slot(0): No link

Appr. 2 lines per second. I get an emergency console to login, but it
is garbled.

If I wait a few minutes to let the qnap cool down it boots again.

# lspci
00:00.0 Host bridge: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx DMI Bridge (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller (rev 02)
00:02.1 Display controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller (rev 02)
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02)
00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02)
00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 02)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 02)
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode] (rev 02)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)
01:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9125 PCIe SATA 6.0 Gb/s controller (rev 11)
02:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9125 PCIe SATA 6.0 Gb/s controller (rev 11)
03:00.0 SATA controller: Marvell Technology Group Ltd. 88SE9125 PCIe SATA 6.0 Gb/s controller (rev 11)
04:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
06:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03)

# lscpu
Architecture:           x86_64
     CPU op-mode(s):       32-bit, 64-bit
     Address sizes:        36 bits physical, 48 bits virtual
     Byte Order:           Little Endian
CPU(s):                 4
     On-line CPU(s) list:  0-3
Vendor ID:              GenuineIntel
     BIOS Vendor ID:       Intel
     Model name:           Intel(R) Atom(TM) CPU D525   @ 1.80GHz
       BIOS Model name:    Intel(R) Atom(TM) CPU D525   @ 1.80GHz               To Be Filled By O.E.M. CPU @ 1.8GHz
       BIOS CPU family:    43
       CPU family:         6
       Model:              28
       Thread(s) per core: 2
       Core(s) per socket: 2
       Socket(s):          1
       Stepping:           10
       BogoMIPS:           3591.07
       Flags:              fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm const
                           ant_tsc arch_perfmon pebs bts nopl cpuid aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dtherm
Caches (sum of all):
     L1d:                  48 KiB (2 instances)
     L1i:                  64 KiB (2 instances)
     L2:                   1 MiB (2 instances)
NUMA:
     NUMA node(s):         1
     NUMA node0 CPU(s):    0-3
Vulnerabilities:
     Itlb multihit:        Not affected
     L1tf:                 Not affected
     Mds:                  Not affected
     Meltdown:             Not affected
     Mmio stale data:      Not affected
     Retbleed:             Not affected
     Spec store bypass:    Not affected
     Spectre v1:           Not affected
     Spectre v2:           Not affected
     Srbds:                Not affected
     Tsx async abort:      Not affected


Every helpful hint is highly appreciated.

Harri