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Date: Fri, 25 Jul 2008 13:50:41 +0900
From: Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
To: Pierre Ossman <drzeus-list@...eus.cx>
CC: Alex Chiang <achiang@...com>,
Jesse Barnes <jbarnes@...tuousgeek.org>,
LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org,
Kristen Accardi <kristen.c.accardi@...el.com>
Subject: Re: post 2.6.26 requires pciehp_slot_with_bus
Thank you for debug info, Pierre.
According to the debugging output, five slots are detected (five
slots on laptop!?) and two of them have the same physical slots
number '2'. This is the reason why Pierre's machine needs
'pciehp_slot_with_bus' option.
Before 2.6.26 (from 2.6.xx), pciehp did the workaround for the
problem (some platform wrongly assign the same physical slot
number to multiple slots) by default. But this was not a good
idea because of the several reasons like follows:
- Slot name should be a physical identifier of physical slot
on the system. Using bus number as a part of slot name is
not a idea because bus number is logical number and it can
be changed.
- As Jesse explained, some hotplug slot can be handled through
several type of controllers. For example, some hotplug slot
can be handled by either acpiphp or pciehp. But those drivers
must not handle the same slot at the same time. The pci
hotplug core is checking this by checking duplicate names.
This check didn't work because pciehp had started using bus
number as a part of slot name and slot names became different
between acpiphp and pciehp.
About the former, I'm ok with using bus number as a part of slot
name on the problematic platform. But it should not be used on
the normal platform.
About the latter, IIRC, thanks to Alex's pci slot framework from
2.6.26, pci hotplug core can check if multiple drivers attempts
to handle the same slot even if those drivers uses the different
names.
Based on my thought above, I have a following idea to remove
"pciehp_slot_with_bus".
- Try to use physical slot number as a slot name, first.
- If pci_hp_register() success, no problem.
- If pci_hp_register() returns -EBUSY, that means another
hotplug driver already handling the slot. So return as error.
- If pci_hp_register() returns -EEXIST, that means there is a
existing slot with the same name. In this case, retry to
register slots with logical name (bus number + physical slot
number, or other).
With this idea, slots names will become as follows on Pierre's
machine.
<Before 2.6.26>
0001_0001, 0002_0002, 0003_0003, 0004_0004, 0005_0005, 000d_0002
<Current>
1, 2, 3, 4, 5
<With my idea>
1, 2, 3, 4, 5, 000d_0002
Please give me comments.
Thanks,
Kenji Kaneshige
Pierre Ossman wrote:
> On Thu, 24 Jul 2008 17:08:27 -0600
> Alex Chiang <achiang@...com> wrote:
>
>> Sorry for one more round-trip, but could you turn on debugging
>> for pciehp as well?
>>
>
> Same thing, with debugging:
>
> [ 1.247138] pcieport-driver 0000:00:01.0: found MSI capability
> [ 1.247203] pci_express 0000:00:01.0:pcie00: allocate port service
> [ 1.247316] pci_express 0000:00:01.0:pcie02: allocate port service
> [ 1.247425] pci_express 0000:00:01.0:pcie03: allocate port service
> [ 1.247655] PCI: Setting latency timer of device 0000:00:1c.0 to 64
> [ 1.247803] pcieport-driver 0000:00:1c.0: found MSI capability
> [ 1.247945] pci_express 0000:00:1c.0:pcie00: allocate port service
> [ 1.248058] pci_express 0000:00:1c.0:pcie02: allocate port service
> [ 1.248166] pci_express 0000:00:1c.0:pcie03: allocate port service
> [ 1.248488] PCI: Setting latency timer of device 0000:00:1c.1 to 64
> [ 1.248635] pcieport-driver 0000:00:1c.1: found MSI capability
> [ 1.248776] pci_express 0000:00:1c.1:pcie00: allocate port service
> [ 1.248909] pci_express 0000:00:1c.1:pcie02: allocate port service
> [ 1.249015] pci_express 0000:00:1c.1:pcie03: allocate port service
> [ 1.249344] PCI: Setting latency timer of device 0000:00:1c.2 to 64
> [ 1.249492] pcieport-driver 0000:00:1c.2: found MSI capability
> [ 1.249633] pci_express 0000:00:1c.2:pcie00: allocate port service
> [ 1.249743] pci_express 0000:00:1c.2:pcie02: allocate port service
> [ 1.249852] pci_express 0000:00:1c.2:pcie03: allocate port service
> [ 1.250175] PCI: Setting latency timer of device 0000:00:1c.3 to 64
> [ 1.250322] pcieport-driver 0000:00:1c.3: found MSI capability
> [ 1.250463] pci_express 0000:00:1c.3:pcie00: allocate port service
> [ 1.250570] pci_express 0000:00:1c.3:pcie02: allocate port service
> [ 1.250680] pci_express 0000:00:1c.3:pcie03: allocate port service
> [ 1.251001] PCI: Setting latency timer of device 0000:00:1c.4 to 64
> [ 1.251148] pcieport-driver 0000:00:1c.4: found MSI capability
> [ 1.251289] pci_express 0000:00:1c.4:pcie00: allocate port service
> [ 1.251397] pci_express 0000:00:1c.4:pcie02: allocate port service
> [ 1.251510] pci_express 0000:00:1c.4:pcie03: allocate port service
> [ 1.252030] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
> [ 1.252940] pciehp: Hotplug Controller:
> [ 1.252946] pciehp: Seg/Bus/Dev/Func/IRQ : 0000:00:01.0 IRQ 223
> [ 1.252951] pciehp: Vendor ID : 0x8086
> [ 1.252955] pciehp: Device ID : 0x2a01
> [ 1.252959] pciehp: Subsystem ID : 0x0000
> [ 1.252962] pciehp: Subsystem Vendor ID : 0x0000
> [ 1.252966] pciehp: PCIe Cap offset : 0xa0
> [ 1.252972] pciehp: PCI resource [7] : 0x1000@...000
> [ 1.252977] pciehp: PCI resource [8] : 0x3000000@...4000000
> [ 1.252981] pciehp: PCI resource [9] : 0x10000000@...0000000
> [ 1.252986] pciehp: Slot Capabilities : 0x000c25c0
> [ 1.252990] pciehp: Physical Slot Number : 1
> [ 1.252994] pciehp: Attention Button : no
> [ 1.252998] pciehp: Power Controller : no
> [ 1.253002] pciehp: MRL Sensor : no
> [ 1.253006] pciehp: Attention Indicator : no
> [ 1.253009] pciehp: Power Indicator : no
> [ 1.253013] pciehp: Hot-Plug Surprise : no
> [ 1.253017] pciehp: EMI Present : no
> [ 1.253020] pciehp: Comamnd Completed : no
> [ 1.253026] pciehp: Slot Status : 0x0048
> [ 1.253031] pciehp: Slot Control : 0x01c0
> [ 1.253103] pciehp: HPC vendor_id 8086 device_id 2a01 ss_vid 0 ss_did 0
> [ 1.253142] pciehp: get_power_status - physical_slot = 1
> [ 1.253149] pciehp: hpc_get_power_status: SLOTCTRL b8 value read 1e8
> [ 1.253154] pciehp: get_attention_status - physical_slot = 1
> [ 1.253161] pciehp: hpc_get_attention_status: SLOTCTRL b8, value read 1e8
> [ 1.253166] pciehp: get_latch_status - physical_slot = 1
> [ 1.253172] pciehp: get_adapter_status - physical_slot = 1
> [ 1.253179] pciehp: Registering bus=1 dev=0 hp_slot=0 sun=1 slot_device_offset=0
> [ 1.253187] Pid: 1, comm: swapper Not tainted 2.6.26 #110
> [ 1.253193] [<c0544545>] pci_hp_register+0x25/0x4b0
> [ 1.253208] [<c0545e3e>] ? get_adapter_status+0x2e/0x70
> [ 1.253218] [<c054631b>] pciehp_probe+0x12b/0x3f0
> [ 1.253226] [<c0542110>] pcie_port_probe_service+0x50/0x90
> [ 1.253235] [<c04e9b67>] ? sysfs_create_link+0x17/0x20
> [ 1.253247] [<c059f42d>] ? driver_sysfs_add+0x5d/0x90
> [ 1.253256] [<c059f557>] driver_probe_device+0x87/0x1a0
> [ 1.253263] [<c066f841>] ? _spin_lock_irqsave+0x21/0x40
> [ 1.253274] [<c066fb66>] ? _spin_unlock_irqrestore+0x16/0x40
> [ 1.253282] [<c059f6e9>] __driver_attach+0x79/0x80
> [ 1.253289] [<c059ee23>] bus_for_each_dev+0x53/0x80
> [ 1.253296] [<c059f3ce>] driver_attach+0x1e/0x20
> [ 1.253303] [<c059f670>] ? __driver_attach+0x0/0x80
> [ 1.253310] [<c059e7e7>] bus_add_driver+0x1b7/0x230
> [ 1.253318] [<c059f8be>] driver_register+0x6e/0x150
> [ 1.253325] [<c059f8be>] ? driver_register+0x6e/0x150
> [ 1.253332] [<c054202f>] pcie_port_service_register+0x3f/0x50
> [ 1.253340] [<c07a7b52>] pcied_init+0x16/0x83
> [ 1.253350] [<c07a7b38>] ? pci_hotplug_init+0x1f/0x23
> [ 1.253359] [<c078b417>] kernel_init+0x1ad/0x2b8
> [ 1.253368] [<c04ae774>] ? sys_select+0x44/0x1a0
> [ 1.253378] [<c07a7b3c>] ? pcied_init+0x0/0x83
> [ 1.253387] [<c042337f>] ? schedule_tail+0x1f/0x50
> [ 1.253396] [<c0403e72>] ? ret_from_fork+0x6/0x1c
> [ 1.253405] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.253413] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.253421] [<c0404b9b>] kernel_thread_helper+0x7/0x10
> [ 1.253429] =======================
> [ 1.253543] hpdriver 0000:00:01.0:pcie02: service driver hpdriver loaded
> [ 1.254331] pciehp: Hotplug Controller:
> [ 1.254337] pciehp: Seg/Bus/Dev/Func/IRQ : 0000:00:1c.0 IRQ 222
> [ 1.254342] pciehp: Vendor ID : 0x8086
> [ 1.254346] pciehp: Device ID : 0x283f
> [ 1.254350] pciehp: Subsystem ID : 0x0000
> [ 1.254353] pciehp: Subsystem Vendor ID : 0x0000
> [ 1.254358] pciehp: PCIe Cap offset : 0x40
> [ 1.254363] pciehp: PCI resource [7] : 0x1000@...000
> [ 1.254367] pciehp: PCI resource [8] : 0x2000000@...c000000
> [ 1.254372] pciehp: PCI resource [9] : 0x100000@...8000000
> [ 1.254377] pciehp: Slot Capabilities : 0x0010a0e0
> [ 1.254381] pciehp: Physical Slot Number : 2
> [ 1.254384] pciehp: Attention Button : no
> [ 1.254389] pciehp: Power Controller : no
> [ 1.254392] pciehp: MRL Sensor : no
> [ 1.254396] pciehp: Attention Indicator : no
> [ 1.254400] pciehp: Power Indicator : no
> [ 1.254404] pciehp: Hot-Plug Surprise : yes
> [ 1.254408] pciehp: EMI Present : no
> [ 1.254411] pciehp: Comamnd Completed : yes
> [ 1.254419] pciehp: Slot Status : 0x0000
> [ 1.254428] pciehp: Slot Control : 0x0000
> [ 1.254451] pciehp: HPC vendor_id 8086 device_id 283f ss_vid 0 ss_did 0
> [ 1.254513] pciehp: get_power_status - physical_slot = 2
> [ 1.254522] pciehp: hpc_get_power_status: SLOTCTRL 58 value read 38
> [ 1.254527] pciehp: get_attention_status - physical_slot = 2
> [ 1.254536] pciehp: hpc_get_attention_status: SLOTCTRL 58, value read 38
> [ 1.254541] pciehp: get_latch_status - physical_slot = 2
> [ 1.254550] pciehp: get_adapter_status - physical_slot = 2
> [ 1.254560] pciehp: Registering bus=2 dev=0 hp_slot=0 sun=2 slot_device_offset=0
> [ 1.254566] Pid: 1, comm: swapper Not tainted 2.6.26 #110
> [ 1.254571] [<c0544545>] pci_hp_register+0x25/0x4b0
> [ 1.254580] [<c0545e3e>] ? get_adapter_status+0x2e/0x70
> [ 1.254590] [<c054631b>] pciehp_probe+0x12b/0x3f0
> [ 1.254598] [<c0542110>] pcie_port_probe_service+0x50/0x90
> [ 1.254606] [<c04e9b67>] ? sysfs_create_link+0x17/0x20
> [ 1.254616] [<c059f42d>] ? driver_sysfs_add+0x5d/0x90
> [ 1.254624] [<c059f557>] driver_probe_device+0x87/0x1a0
> [ 1.254631] [<c066f841>] ? _spin_lock_irqsave+0x21/0x40
> [ 1.254641] [<c066fb66>] ? _spin_unlock_irqrestore+0x16/0x40
> [ 1.254649] [<c059f6e9>] __driver_attach+0x79/0x80
> [ 1.254656] [<c059ee23>] bus_for_each_dev+0x53/0x80
> [ 1.254663] [<c059f3ce>] driver_attach+0x1e/0x20
> [ 1.254670] [<c059f670>] ? __driver_attach+0x0/0x80
> [ 1.254678] [<c059e7e7>] bus_add_driver+0x1b7/0x230
> [ 1.254685] [<c059f8be>] driver_register+0x6e/0x150
> [ 1.254692] [<c059f8be>] ? driver_register+0x6e/0x150
> [ 1.254700] [<c054202f>] pcie_port_service_register+0x3f/0x50
> [ 1.254709] [<c07a7b52>] pcied_init+0x16/0x83
> [ 1.254717] [<c07a7b38>] ? pci_hotplug_init+0x1f/0x23
> [ 1.254725] [<c078b417>] kernel_init+0x1ad/0x2b8
> [ 1.254733] [<c04ae774>] ? sys_select+0x44/0x1a0
> [ 1.254742] [<c07a7b3c>] ? pcied_init+0x0/0x83
> [ 1.254751] [<c042337f>] ? schedule_tail+0x1f/0x50
> [ 1.254759] [<c0403e72>] ? ret_from_fork+0x6/0x1c
> [ 1.254767] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.254776] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.254784] [<c0404b9b>] kernel_thread_helper+0x7/0x10
> [ 1.254792] =======================
> [ 1.254909] hpdriver 0000:00:1c.0:pcie02: service driver hpdriver loaded
> [ 1.255694] pciehp: Hotplug Controller:
> [ 1.255700] pciehp: Seg/Bus/Dev/Func/IRQ : 0000:00:1c.1 IRQ 221
> [ 1.255704] pciehp: Vendor ID : 0x8086
> [ 1.255709] pciehp: Device ID : 0x2841
> [ 1.255712] pciehp: Subsystem ID : 0x0000
> [ 1.255716] pciehp: Subsystem Vendor ID : 0x0000
> [ 1.255720] pciehp: PCIe Cap offset : 0x40
> [ 1.255725] pciehp: PCI resource [7] : 0x1000@...000
> [ 1.255730] pciehp: PCI resource [8] : 0x3200000@...c100000
> [ 1.255735] pciehp: PCI resource [9] : 0x100000@...fd00000
> [ 1.255739] pciehp: Slot Capabilities : 0x0018a0e0
> [ 1.255743] pciehp: Physical Slot Number : 3
> [ 1.255747] pciehp: Attention Button : no
> [ 1.255750] pciehp: Power Controller : no
> [ 1.255754] pciehp: MRL Sensor : no
> [ 1.255758] pciehp: Attention Indicator : no
> [ 1.255762] pciehp: Power Indicator : no
> [ 1.255765] pciehp: Hot-Plug Surprise : yes
> [ 1.255769] pciehp: EMI Present : no
> [ 1.255773] pciehp: Comamnd Completed : yes
> [ 1.255781] pciehp: Slot Status : 0x0148
> [ 1.255792] pciehp: Slot Control : 0x0000
> [ 1.255817] pciehp: HPC vendor_id 8086 device_id 2841 ss_vid 0 ss_did 0
> [ 1.255884] pciehp: get_power_status - physical_slot = 3
> [ 1.255894] pciehp: hpc_get_power_status: SLOTCTRL 58 value read 38
> [ 1.255899] pciehp: get_attention_status - physical_slot = 3
> [ 1.255909] pciehp: hpc_get_attention_status: SLOTCTRL 58, value read 38
> [ 1.255914] pciehp: get_latch_status - physical_slot = 3
> [ 1.255922] pciehp: get_adapter_status - physical_slot = 3
> [ 1.255932] pciehp: Registering bus=3 dev=0 hp_slot=0 sun=3 slot_device_offset=0
> [ 1.255938] Pid: 1, comm: swapper Not tainted 2.6.26 #110
> [ 1.255943] [<c0544545>] pci_hp_register+0x25/0x4b0
> [ 1.255952] [<c0545e3e>] ? get_adapter_status+0x2e/0x70
> [ 1.255962] [<c054631b>] pciehp_probe+0x12b/0x3f0
> [ 1.255971] [<c0542110>] pcie_port_probe_service+0x50/0x90
> [ 1.255978] [<c04e9b67>] ? sysfs_create_link+0x17/0x20
> [ 1.255988] [<c059f42d>] ? driver_sysfs_add+0x5d/0x90
> [ 1.255996] [<c059f557>] driver_probe_device+0x87/0x1a0
> [ 1.256003] [<c066f841>] ? _spin_lock_irqsave+0x21/0x40
> [ 1.256013] [<c066fb66>] ? _spin_unlock_irqrestore+0x16/0x40
> [ 1.256021] [<c059f6e9>] __driver_attach+0x79/0x80
> [ 1.256028] [<c059ee23>] bus_for_each_dev+0x53/0x80
> [ 1.256035] [<c059f3ce>] driver_attach+0x1e/0x20
> [ 1.256042] [<c059f670>] ? __driver_attach+0x0/0x80
> [ 1.256050] [<c059e7e7>] bus_add_driver+0x1b7/0x230
> [ 1.256057] [<c059f8be>] driver_register+0x6e/0x150
> [ 1.256064] [<c059f8be>] ? driver_register+0x6e/0x150
> [ 1.256072] [<c054202f>] pcie_port_service_register+0x3f/0x50
> [ 1.256081] [<c07a7b52>] pcied_init+0x16/0x83
> [ 1.256089] [<c07a7b38>] ? pci_hotplug_init+0x1f/0x23
> [ 1.256098] [<c078b417>] kernel_init+0x1ad/0x2b8
> [ 1.256105] [<c04ae774>] ? sys_select+0x44/0x1a0
> [ 1.256114] [<c07a7b3c>] ? pcied_init+0x0/0x83
> [ 1.256122] [<c042337f>] ? schedule_tail+0x1f/0x50
> [ 1.256131] [<c0403e72>] ? ret_from_fork+0x6/0x1c
> [ 1.256139] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.256147] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.256155] [<c0404b9b>] kernel_thread_helper+0x7/0x10
> [ 1.256163] =======================
> [ 1.256279] hpdriver 0000:00:1c.1:pcie02: service driver hpdriver loaded
> [ 1.257096] pciehp: Hotplug Controller:
> [ 1.257101] pciehp: Seg/Bus/Dev/Func/IRQ : 0000:00:1c.2 IRQ 220
> [ 1.257106] pciehp: Vendor ID : 0x8086
> [ 1.257110] pciehp: Device ID : 0x2843
> [ 1.257114] pciehp: Subsystem ID : 0x0000
> [ 1.257117] pciehp: Subsystem Vendor ID : 0x0000
> [ 1.257121] pciehp: PCIe Cap offset : 0x40
> [ 1.257126] pciehp: PCI resource [7] : 0x1000@...000
> [ 1.257131] pciehp: PCI resource [8] : 0x2000000@...8000000
> [ 1.257136] pciehp: PCI resource [9] : 0x100000@...fa00000
> [ 1.257140] pciehp: Slot Capabilities : 0x0020a0e0
> [ 1.257144] pciehp: Physical Slot Number : 4
> [ 1.257148] pciehp: Attention Button : no
> [ 1.257152] pciehp: Power Controller : no
> [ 1.257155] pciehp: MRL Sensor : no
> [ 1.257159] pciehp: Attention Indicator : no
> [ 1.257163] pciehp: Power Indicator : no
> [ 1.257166] pciehp: Hot-Plug Surprise : yes
> [ 1.257170] pciehp: EMI Present : no
> [ 1.257173] pciehp: Comamnd Completed : yes
> [ 1.257181] pciehp: Slot Status : 0x0000
> [ 1.257189] pciehp: Slot Control : 0x0000
> [ 1.257213] pciehp: HPC vendor_id 8086 device_id 2843 ss_vid 0 ss_did 0
> [ 1.257274] pciehp: get_power_status - physical_slot = 4
> [ 1.257283] pciehp: hpc_get_power_status: SLOTCTRL 58 value read 38
> [ 1.257288] pciehp: get_attention_status - physical_slot = 4
> [ 1.257297] pciehp: hpc_get_attention_status: SLOTCTRL 58, value read 38
> [ 1.257302] pciehp: get_latch_status - physical_slot = 4
> [ 1.257311] pciehp: get_adapter_status - physical_slot = 4
> [ 1.257320] pciehp: Registering bus=4 dev=0 hp_slot=0 sun=4 slot_device_offset=0
> [ 1.257326] Pid: 1, comm: swapper Not tainted 2.6.26 #110
> [ 1.257332] [<c0544545>] pci_hp_register+0x25/0x4b0
> [ 1.257341] [<c0545e3e>] ? get_adapter_status+0x2e/0x70
> [ 1.257351] [<c054631b>] pciehp_probe+0x12b/0x3f0
> [ 1.257360] [<c0542110>] pcie_port_probe_service+0x50/0x90
> [ 1.257367] [<c04e9b67>] ? sysfs_create_link+0x17/0x20
> [ 1.257377] [<c059f42d>] ? driver_sysfs_add+0x5d/0x90
> [ 1.257385] [<c059f557>] driver_probe_device+0x87/0x1a0
> [ 1.257392] [<c066f841>] ? _spin_lock_irqsave+0x21/0x40
> [ 1.257401] [<c066fb66>] ? _spin_unlock_irqrestore+0x16/0x40
> [ 1.257409] [<c059f6e9>] __driver_attach+0x79/0x80
> [ 1.257417] [<c059ee23>] bus_for_each_dev+0x53/0x80
> [ 1.257424] [<c059f3ce>] driver_attach+0x1e/0x20
> [ 1.257430] [<c059f670>] ? __driver_attach+0x0/0x80
> [ 1.257438] [<c059e7e7>] bus_add_driver+0x1b7/0x230
> [ 1.257445] [<c059f8be>] driver_register+0x6e/0x150
> [ 1.257452] [<c059f8be>] ? driver_register+0x6e/0x150
> [ 1.257460] [<c054202f>] pcie_port_service_register+0x3f/0x50
> [ 1.257469] [<c07a7b52>] pcied_init+0x16/0x83
> [ 1.257477] [<c07a7b38>] ? pci_hotplug_init+0x1f/0x23
> [ 1.257485] [<c078b417>] kernel_init+0x1ad/0x2b8
> [ 1.257493] [<c04ae774>] ? sys_select+0x44/0x1a0
> [ 1.257502] [<c07a7b3c>] ? pcied_init+0x0/0x83
> [ 1.257511] [<c042337f>] ? schedule_tail+0x1f/0x50
> [ 1.257519] [<c0403e72>] ? ret_from_fork+0x6/0x1c
> [ 1.257527] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.257535] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.257543] [<c0404b9b>] kernel_thread_helper+0x7/0x10
> [ 1.257551] =======================
> [ 1.257666] hpdriver 0000:00:1c.2:pcie02: service driver hpdriver loaded
> [ 1.258450] pciehp: Hotplug Controller:
> [ 1.258455] pciehp: Seg/Bus/Dev/Func/IRQ : 0000:00:1c.3 IRQ 219
> [ 1.258460] pciehp: Vendor ID : 0x8086
> [ 1.258464] pciehp: Device ID : 0x2845
> [ 1.258468] pciehp: Subsystem ID : 0x0000
> [ 1.258472] pciehp: Subsystem Vendor ID : 0x0000
> [ 1.258476] pciehp: PCIe Cap offset : 0x40
> [ 1.258480] pciehp: PCI resource [7] : 0x1000@...000
> [ 1.258485] pciehp: PCI resource [8] : 0x2000000@...0000000
> [ 1.258490] pciehp: PCI resource [9] : 0x100000@...f700000
> [ 1.258495] pciehp: Slot Capabilities : 0x0028a0e0
> [ 1.258499] pciehp: Physical Slot Number : 5
> [ 1.258502] pciehp: Attention Button : no
> [ 1.258507] pciehp: Power Controller : no
> [ 1.258510] pciehp: MRL Sensor : no
> [ 1.258514] pciehp: Attention Indicator : no
> [ 1.258517] pciehp: Power Indicator : no
> [ 1.258521] pciehp: Hot-Plug Surprise : yes
> [ 1.258525] pciehp: EMI Present : no
> [ 1.258528] pciehp: Comamnd Completed : yes
> [ 1.258536] pciehp: Slot Status : 0x0000
> [ 1.258544] pciehp: Slot Control : 0x0028
> [ 1.258568] pciehp: HPC vendor_id 8086 device_id 2845 ss_vid 0 ss_did 0
> [ 1.258628] pciehp: get_power_status - physical_slot = 5
> [ 1.258638] pciehp: hpc_get_power_status: SLOTCTRL 58 value read 38
> [ 1.258643] pciehp: get_attention_status - physical_slot = 5
> [ 1.258652] pciehp: hpc_get_attention_status: SLOTCTRL 58, value read 38
> [ 1.258657] pciehp: get_latch_status - physical_slot = 5
> [ 1.258665] pciehp: get_adapter_status - physical_slot = 5
> [ 1.258675] pciehp: Registering bus=5 dev=0 hp_slot=0 sun=5 slot_device_offset=0
> [ 1.258681] Pid: 1, comm: swapper Not tainted 2.6.26 #110
> [ 1.258686] [<c0544545>] pci_hp_register+0x25/0x4b0
> [ 1.258696] [<c0545e3e>] ? get_adapter_status+0x2e/0x70
> [ 1.258705] [<c054631b>] pciehp_probe+0x12b/0x3f0
> [ 1.258713] [<c0542110>] pcie_port_probe_service+0x50/0x90
> [ 1.258721] [<c04e9b67>] ? sysfs_create_link+0x17/0x20
> [ 1.258730] [<c059f42d>] ? driver_sysfs_add+0x5d/0x90
> [ 1.258739] [<c059f557>] driver_probe_device+0x87/0x1a0
> [ 1.258746] [<c066f841>] ? _spin_lock_irqsave+0x21/0x40
> [ 1.258756] [<c066fb66>] ? _spin_unlock_irqrestore+0x16/0x40
> [ 1.258764] [<c059f6e9>] __driver_attach+0x79/0x80
> [ 1.258772] [<c059ee23>] bus_for_each_dev+0x53/0x80
> [ 1.258778] [<c059f3ce>] driver_attach+0x1e/0x20
> [ 1.258785] [<c059f670>] ? __driver_attach+0x0/0x80
> [ 1.258793] [<c059e7e7>] bus_add_driver+0x1b7/0x230
> [ 1.258801] [<c059f8be>] driver_register+0x6e/0x150
> [ 1.258808] [<c059f8be>] ? driver_register+0x6e/0x150
> [ 1.258816] [<c054202f>] pcie_port_service_register+0x3f/0x50
> [ 1.258824] [<c07a7b52>] pcied_init+0x16/0x83
> [ 1.258832] [<c07a7b38>] ? pci_hotplug_init+0x1f/0x23
> [ 1.258841] [<c078b417>] kernel_init+0x1ad/0x2b8
> [ 1.258849] [<c04ae774>] ? sys_select+0x44/0x1a0
> [ 1.258857] [<c07a7b3c>] ? pcied_init+0x0/0x83
> [ 1.258866] [<c042337f>] ? schedule_tail+0x1f/0x50
> [ 1.258874] [<c0403e72>] ? ret_from_fork+0x6/0x1c
> [ 1.258883] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.258891] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.258899] [<c0404b9b>] kernel_thread_helper+0x7/0x10
> [ 1.258907] =======================
> [ 1.259022] hpdriver 0000:00:1c.3:pcie02: service driver hpdriver loaded
> [ 1.259814] pciehp: Hotplug Controller:
> [ 1.259820] pciehp: Seg/Bus/Dev/Func/IRQ : 0000:00:1c.4 IRQ 218
> [ 1.259825] pciehp: Vendor ID : 0x8086
> [ 1.259829] pciehp: Device ID : 0x2847
> [ 1.259833] pciehp: Subsystem ID : 0x0000
> [ 1.259836] pciehp: Subsystem Vendor ID : 0x0000
> [ 1.259840] pciehp: PCIe Cap offset : 0x40
> [ 1.259845] pciehp: PCI resource [7] : 0x1000@...000
> [ 1.259850] pciehp: PCI resource [8] : 0x2000000@...c000000
> [ 1.259855] pciehp: PCI resource [9] : 0x100000@...f400000
> [ 1.259859] pciehp: Slot Capabilities : 0x0010a0e0
> [ 1.259863] pciehp: Physical Slot Number : 2
> [ 1.259867] pciehp: Attention Button : no
> [ 1.259871] pciehp: Power Controller : no
> [ 1.259875] pciehp: MRL Sensor : no
> [ 1.259879] pciehp: Attention Indicator : no
> [ 1.259883] pciehp: Power Indicator : no
> [ 1.259886] pciehp: Hot-Plug Surprise : yes
> [ 1.259890] pciehp: EMI Present : no
> [ 1.259893] pciehp: Comamnd Completed : yes
> [ 1.259901] pciehp: Slot Status : 0x0000
> [ 1.259910] pciehp: Slot Control : 0x0000
> [ 1.259933] pciehp: HPC vendor_id 8086 device_id 2847 ss_vid 0 ss_did 0
> [ 1.259994] pciehp: get_power_status - physical_slot = 2
> [ 1.260003] pciehp: hpc_get_power_status: SLOTCTRL 58 value read 38
> [ 1.260008] pciehp: get_attention_status - physical_slot = 2
> [ 1.260017] pciehp: hpc_get_attention_status: SLOTCTRL 58, value read 38
> [ 1.260022] pciehp: get_latch_status - physical_slot = 2
> [ 1.260031] pciehp: get_adapter_status - physical_slot = 2
> [ 1.260041] pciehp: Registering bus=d dev=0 hp_slot=0 sun=2 slot_device_offset=0
> [ 1.260047] Pid: 1, comm: swapper Not tainted 2.6.26 #110
> [ 1.260052] [<c0544545>] pci_hp_register+0x25/0x4b0
> [ 1.260061] [<c0545e3e>] ? get_adapter_status+0x2e/0x70
> [ 1.260071] [<c054631b>] pciehp_probe+0x12b/0x3f0
> [ 1.260079] [<c0542110>] pcie_port_probe_service+0x50/0x90
> [ 1.260087] [<c04e9b67>] ? sysfs_create_link+0x17/0x20
> [ 1.260096] [<c059f42d>] ? driver_sysfs_add+0x5d/0x90
> [ 1.260104] [<c059f557>] driver_probe_device+0x87/0x1a0
> [ 1.260111] [<c066f841>] ? _spin_lock_irqsave+0x21/0x40
> [ 1.260121] [<c066fb66>] ? _spin_unlock_irqrestore+0x16/0x40
> [ 1.260129] [<c059f6e9>] __driver_attach+0x79/0x80
> [ 1.260137] [<c059ee23>] bus_for_each_dev+0x53/0x80
> [ 1.260144] [<c059f3ce>] driver_attach+0x1e/0x20
> [ 1.260151] [<c059f670>] ? __driver_attach+0x0/0x80
> [ 1.260159] [<c059e7e7>] bus_add_driver+0x1b7/0x230
> [ 1.260166] [<c059f8be>] driver_register+0x6e/0x150
> [ 1.260174] [<c059f8be>] ? driver_register+0x6e/0x150
> [ 1.260182] [<c054202f>] pcie_port_service_register+0x3f/0x50
> [ 1.260191] [<c07a7b52>] pcied_init+0x16/0x83
> [ 1.260199] [<c07a7b38>] ? pci_hotplug_init+0x1f/0x23
> [ 1.260208] [<c078b417>] kernel_init+0x1ad/0x2b8
> [ 1.260216] [<c04ae774>] ? sys_select+0x44/0x1a0
> [ 1.260225] [<c07a7b3c>] ? pcied_init+0x0/0x83
> [ 1.260234] [<c042337f>] ? schedule_tail+0x1f/0x50
> [ 1.260242] [<c0403e72>] ? ret_from_fork+0x6/0x1c
> [ 1.260250] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.260258] [<c078b26a>] ? kernel_init+0x0/0x2b8
> [ 1.260266] [<c0404b9b>] kernel_thread_helper+0x7/0x10
> [ 1.260274] =======================
> [ 1.260278] pciehp: pci_hp_register failed with error -17
> [ 1.260412] pciehp: Failed to register slot because of name collision. Try 'pciehp_slot_with_bus' module option.
> [ 1.260547] pciehp: pciehp: slot initialization failed
> [ 1.260817] pciehp: pcie_port_service_register = 0
> [ 1.260822] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
>
>
--
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