pci device resume too early?

pci device resume too early?

[Stefan Dösinger]

[-- Attachment #1: Type: text/plain, Size: 873 bytes --]

Hello,
I have problems with a few pci devices after resume. Hardware environment is a 
acer Travelmate 803(lspci attached), I use an unpatched linux-2.6.8-rc2 
kernel.

The problem is that directly after S3 resume, any attempt to write to pci 
configuration registers of three of my devices(00:1d.7, 00:1f.5, 00:1f.6) 
locks up my system. After some testing, I found out that pci_restore_state 
works nice if I place it into a function which is scheduled with 
schedule_delayed_work. I use my dummydriver module for testing.

Using mdelay(something) instead of scheduling a work doesn't help, so it's not 
the hardware which needs some time. 
Is it possible that the driver's resume functions are called too early? Can 
you point me to the place in the acpi code which calls the resume methods 
that I can do further testing? I couldn't find it.

Thanks in advance,
Stefan

[-- Attachment #2: lspci --]
[-- Type: text/plain, Size: 27167 bytes --]

0000:00:00.0 Host bridge: Intel Corp.: Unknown device 3340 (rev 03)
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
	Latency: 0
	Region 0: Memory at e0000000 (32-bit, prefetchable)
	Capabilities: [e4] #09 [f104]
	Capabilities: [a0] AGP version 2.0
		Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4
		Command: RQ=1 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x4
00: 86 80 40 33 06 01 90 20 03 00 00 06 00 00 00 00
10: 08 00 00 e0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 e4 00 00 00 00 00 00 00 00 00 00 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 02 00 00 00 00 00 00 00 00 00 00 00 27 00 00
60: 04 08 0c 10 00 00 00 00 00 00 00 00 00 00 00 00
70: 02 02 00 00 00 00 00 00 00 02 02 2c 71 32 40 30
80: 71 00 80 05 00 00 00 00 00 02 01 00 00 00 00 00
90: 10 11 11 01 00 13 11 00 41 19 00 00 00 0a 7d 00
a0: 02 00 20 00 17 02 00 1f 04 03 00 00 00 00 00 00
b0: 80 00 00 00 00 00 00 00 00 00 04 1e 20 10 00 00
c0: 44 40 50 11 00 20 05 08 00 00 00 00 00 00 00 00
d0: 02 28 00 0e 0b 00 00 30 00 00 31 b5 00 00 02 00
e0: 00 00 00 00 09 a0 04 f1 00 00 00 00 00 00 00 00
f0: 00 00 01 00 74 f8 20 80 38 0f 00 00 04 00 00 00

0000:00:01.0 PCI bridge: Intel Corp.: Unknown device 3341 (rev 03) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap- 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 96
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
	I/O behind bridge: 00003000-00003fff
	Memory behind bridge: d0100000-d01fffff
	Prefetchable memory behind bridge: d8000000-dfffffff
	Expansion ROM at 00003000 [disabled] [size=4K]
	BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
00: 86 80 41 33 07 01 a0 00 03 00 04 06 00 60 01 00
10: 00 00 00 00 00 00 00 00 00 01 01 40 30 30 a0 22
20: 10 d0 10 d0 00 d8 f0 df 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0c 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 01 00 00 00 00 00 49 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0000:00:1d.0 USB Controller: Intel Corp. 82801DB USB (Hub #1) (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Interrupt: pin A routed to IRQ 10
	Region 4: I/O ports at 1800 [size=32]
00: 86 80 c2 24 05 00 80 02 03 00 03 0c 00 00 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 01 18 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 0a 01 00 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 2f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 00 00

0000:00:1d.1 USB Controller: Intel Corp. 82801DB USB (Hub #2) (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Interrupt: pin B routed to IRQ 5
	Region 4: I/O ports at 1820 [size=32]
00: 86 80 c4 24 05 00 80 02 03 00 03 0c 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 21 18 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 05 02 00 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 2f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 00 00

0000:00:1d.2 USB Controller: Intel Corp. 82801DB USB (Hub #3) (rev 03) (prog-if 00 [UHCI])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Interrupt: pin C routed to IRQ 10
	Region 4: I/O ports at 1840 [size=32]
00: 86 80 c7 24 05 00 80 02 03 00 03 0c 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 41 18 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 0a 03 00 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 2f 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 00 00

0000:00:1d.7 USB Controller: Intel Corp. 82801DB USB EHCI Controller (rev 03) (prog-if 20 [EHCI])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Interrupt: pin D routed to IRQ 10
	Region 0: Memory at d0000000 (32-bit, non-prefetchable)
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [58] #0a [2080]
00: 86 80 cd 24 06 01 90 02 03 20 03 0c 00 00 00 00
10: 00 00 00 d0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 50 00 00 00 00 00 00 00 0a 04 00 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 01 58 c2 c9 00 00 00 00 0a 00 80 20 00 00 00 00
60: 20 20 7f 00 10 00 00 00 01 00 00 00 00 00 08 c0
70: 00 00 d7 0f 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 78 bf 1f 00 88 83 00 00 60 0f 00 00 06 00 00 00

0000:00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 83) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR+
	Latency: 0
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=64
	I/O behind bridge: 00004000-00004fff
	Memory behind bridge: d0200000-d05fffff
	BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
00: 86 80 48 24 07 01 80 80 83 00 04 06 00 00 01 00
10: 00 00 00 00 00 00 00 00 00 02 02 40 40 40 80 22
20: 20 d0 50 d0 f0 ff 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 00
40: 02 28 20 00 00 01 00 00 00 00 00 00 00 00 00 00
50: 02 74 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 10 00 08 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 01 00 02 00 00 00 c0 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 2e 46

0000:00:1f.0 ISA bridge: Intel Corp.: Unknown device 24cc (rev 03)
	Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
00: 86 80 cc 24 0f 00 80 02 03 00 01 06 00 00 80 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
40: 01 10 00 00 10 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 81 11 00 00 10 00 00 00
60: 0a 0a 0a 05 90 00 00 00 0b 80 80 0a 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: ff fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: a4 03 00 00 04 00 00 00 0d 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 01 0a 00 00 00 00
c0: 00 00 00 00 00 fe 00 00 00 00 00 00 00 00 00 00
d0: 06 28 00 00 02 cf 00 00 04 00 00 00 00 00 00 00
e0: 10 00 00 ff 00 00 00 00 33 22 11 00 00 00 67 45
f0: 0f 00 00 00 00 00 00 00 60 0f 03 00 00 00 80 00

0000:00:1f.1 IDE interface: Intel Corp.: Unknown device 24ca (rev 03) (prog-if 8a [Master SecP PriP])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Interrupt: pin A routed to IRQ 10
	Region 0: I/O ports at <unassigned>
	Region 1: I/O ports at <unassigned>
	Region 2: I/O ports at <unassigned>
	Region 3: I/O ports at <unassigned>
	Region 4: I/O ports at 1860 [size=16]
	Region 5: Memory at 20000000 (32-bit, non-prefetchable) [size=1K]
00: 86 80 ca 24 07 00 80 02 03 8a 01 01 00 00 00 00
10: 01 00 00 00 01 00 00 00 01 00 00 00 01 00 00 00
20: 61 18 00 00 00 00 00 20 00 00 00 00 25 10 1f 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 ff 01 00 00
40: 07 a3 00 80 00 00 00 00 01 00 01 00 00 00 00 00
50: 00 00 00 00 11 14 00 00 00 00 00 00 00 00 00 00
60: 08 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 00 00

0000:00:1f.3 SMBus: Intel Corp. 82801DB SMBus (rev 03)
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Interrupt: pin B routed to IRQ 10
	Region 4: I/O ports at 1880 [size=32]
00: 86 80 c3 24 01 00 80 02 03 00 05 0c 00 00 00 00
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
20: 81 18 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 0a 02 00 00
40: 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 00 00

0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB AC'97 Audio (rev 03)
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Interrupt: pin B routed to IRQ 10
	Region 0: I/O ports at 1c00
	Region 1: I/O ports at 18c0 [size=64]
	Region 2: Memory at d0000c00 (32-bit, non-prefetchable) [size=512]
	Region 3: Memory at d0000800 (32-bit, non-prefetchable) [size=256]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 86 80 c5 24 07 00 90 02 03 00 01 04 00 00 00 00
10: 01 1c 00 00 c1 18 00 00 00 0c 00 d0 00 08 00 d0
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 50 00 00 00 00 00 00 00 0a 02 00 00
40: 09 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 01 00 c2 c9 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 00 00

0000:00:1f.6 Modem: Intel Corp. 82801DB AC'97 Modem (rev 03) (prog-if 00 [Generic])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 0
	Interrupt: pin B routed to IRQ 10
	Region 0: I/O ports at 2400
	Region 1: I/O ports at 2000 [size=128]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 86 80 c6 24 05 00 90 02 03 00 03 07 00 00 00 00
10: 01 24 00 00 01 20 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 50 00 00 00 00 00 00 00 0a 02 00 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 01 00 c2 c9 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 60 0f 00 00 00 00 00 00

0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R250 Lf [Radeon Mobility 9000] (rev 01) (prog-if 00 [VGA])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR+ FastB2B+
	Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 66 (2000ns min), cache line size 08
	Interrupt: pin A routed to IRQ 10
	Region 0: Memory at d8000000 (32-bit, prefetchable)
	Region 1: I/O ports at 3000 [size=256]
	Region 2: Memory at d0100000 (32-bit, non-prefetchable) [size=64K]
	Capabilities: [58] AGP version 2.0
		Status: RQ=48 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4
		Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x4
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 02 10 66 4c 87 03 b0 02 01 00 00 03 08 42 00 00
10: 08 00 00 d8 01 30 00 00 00 00 10 d0 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 58 00 00 00 00 00 00 00 0a 01 08 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
50: 01 00 02 06 00 00 00 00 02 50 20 00 17 02 00 2f
60: 04 03 00 1f 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0000:02:02.0 Ethernet controller: Broadcom Corporation BCM4401 100Base-T (rev 01)
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 64
	Interrupt: pin A routed to IRQ 5
	Region 0: Memory at d0204000 (32-bit, non-prefetchable)
	Capabilities: [40] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=2 PME-
00: e4 14 01 44 06 01 10 00 01 00 00 02 00 40 00 00
10: 00 40 20 d0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 40 00 00 00 00 00 00 00 05 01 00 00
40: 01 00 c2 ff 00 40 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 18 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 10 00 00 01 20 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0000:02:04.0 Network controller: Intel Corp.: Unknown device 1043 (rev 04)
	Subsystem: Intel Corp.: Unknown device 2527
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 64 (500ns min, 8500ns max), cache line size 08
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at d0206000 (32-bit, non-prefetchable)
	Capabilities: [dc] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=1 PME-
00: 86 80 43 10 16 01 90 02 04 00 80 02 08 40 00 00
10: 00 60 20 d0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 27 25
30: 00 00 00 00 dc 00 00 00 00 00 00 00 0b 01 02 22
40: 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 01 00 02 00
e0: 00 20 00 14 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0000:02:06.0 CardBus bridge: O2 Micro, Inc.: Unknown device 7114 (rev 20)
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR+ FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 64
	Interrupt: pin A routed to IRQ 10
	Region 0: Memory at d0207000 (32-bit, non-prefetchable)
	Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
	Memory window 0: d0400000-d04ff000 (prefetchable)
	Memory window 1: d0300000-d03ff000 (prefetchable)
	I/O window 0: 00004400-000044ff
	I/O window 1: 00004000-000040ff
	BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite-
	16-bit legacy interface ports at 0001
00: 17 12 14 71 87 01 10 04 20 00 07 06 00 40 82 00
10: 00 70 20 d0 a0 00 00 02 02 03 06 b0 00 00 40 d0
20: 00 f0 4f d0 00 00 30 d0 00 f0 3f d0 01 44 00 00
30: fd 44 00 00 01 40 00 00 fd 40 00 00 ff 01 c0 03
40: 25 10 1f 00 01 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 82 18 8c 01
90: 03 00 25 02 00 00 00 00 00 00 00 00 00 00 00 00
a0: 01 00 02 fe 00 40 c0 00 00 00 00 00 09 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 40 00 08 ea 0b 81 80 00 00 00 00 00 00 40 00
e0: 01 00 82 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0000:02:06.1 CardBus bridge: O2 Micro, Inc.: Unknown device 7114 (rev 20)
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Interrupt: pin A routed to IRQ 10
	Region 0: Memory at 20001000 (32-bit, non-prefetchable) [disabled]
	Bus: primary=02, secondary=07, subordinate=0a, sec-latency=176
	I/O window 0: 00000000-00000003 [disabled]
	I/O window 1: 00000000-00000003 [disabled]
	BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-
	16-bit legacy interface ports at 0001
00: 17 12 14 71 80 00 10 04 20 00 07 06 00 00 82 00
10: 00 10 00 20 a0 00 00 02 02 07 0a b0 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
30: 01 00 00 00 01 00 00 00 01 00 00 00 00 01 00 00
40: 25 10 1f 00 01 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 82 18 8c 01
90: 03 00 25 02 00 00 00 00 00 00 00 00 00 00 00 00
a0: 01 00 02 fe 00 40 c0 00 00 00 00 00 09 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 40 00 08 ea 0b 82 80 00 00 00 00 00 00 40 10
e0: 01 00 82 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0000:02:06.2 System peripheral: O2 Micro, Inc.: Unknown device 7110
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Interrupt: pin A routed to IRQ 10
	Region 0: Memory at d0208000 (32-bit, non-prefetchable)
	Capabilities: [a0] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 17 12 10 71 03 01 10 04 00 00 80 08 08 40 00 00
10: 00 80 20 d0 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 a0 00 00 00 00 00 00 00 0a 01 00 00
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 01 00 02 fe 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

0000:02:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB21 IEEE-1394a-2000 Controller (PHY/Link) (prog-if 10 [OHCI])
	Subsystem: Acer Incorporated [ALI]: Unknown device 001f
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 64 (500ns min, 1000ns max), cache line size 08
	Interrupt: pin A routed to IRQ 10
	Region 0: Memory at d0209000 (32-bit, non-prefetchable)
	Region 1: Memory at d0200000 (32-bit, non-prefetchable) [size=16K]
	Capabilities: [44] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 4c 10 26 80 16 01 10 02 00 10 00 0c 08 40 00 00
10: 00 90 20 d0 00 00 20 d0 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 25 10 1f 00
30: 00 00 00 00 44 00 00 00 00 00 00 00 0a 01 02 04
40: 00 00 00 00 01 00 02 7e 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 88 00 00 00
f0: 10 00 00 00 86 10 00 00 25 10 1f 00 00 00 00 00


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #3: dummydriver.c --]
[-- Type: text/x-csrc; charset="us-ascii"; name="dummydriver.c", Size: 4820 bytes --]

/***************************************************************************
 *   Copyright (C) 2004 by Stefan Dösinger                                 *
 *   stefandoesinger-RbZlAiThDcE@public.gmane.org                                                *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
/*This driver provides an empty suspend and resume function for the sound card
and the modem built into the Acer Travelmate 800. This is to prevent the
default resume function of the kernel from crashing the system.*/
 
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/delay.h>	/*For testing with mdelay*/

MODULE_DESCRIPTION("My kernel module");
MODULE_AUTHOR("Stefan Dösinger (stefandoesinger-RbZlAiThDcE@public.gmane.org)");
MODULE_LICENSE("GPL");

static struct pci_device_id dummy_pci_tbl [] = {
	{0x8086, 0x24c5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},	/*Sound card*/
	{0x8086, 0x24c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Modem */
//	{0x1217, 0x7114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* pcmcia */
//	{0x1217, 0x7110, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* unknown */
//	{0x104c, 0x8026, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* firewire */
//	{0x8086, 0x24c2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* usb */
//	{0x8086, 0x24c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* usb*/
//	{0x8086, 0x24c7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* usb*/
	{0x8086, 0x24cd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* usb */
	
	{0,}
};

static struct work_struct work;
int queued_work=0;

unsigned int pci_config[16];

static void delayed_resume(void *data)
{
	struct pci_dev *dev = data;
	printk("delayed resume\n");
	
	pci_restore_state(dev, pci_config);
}


static int dummy_pm_suspend(struct pci_dev *dev, u32 pm_state)
{
	printk("%s: not doing anything\n", __FUNCTION__);
	if( (dev->vendor == 0x8086) && (dev->device == 0x24c5) )	/*Do some testing with the soundcard*/
	{
	    pci_save_state(dev, pci_config);
	}
	
	return 0;
}

static int dummy_pm_resume(struct pci_dev *dev)
{
	printk("%s: not doing anything\n", __FUNCTION__);
	
	if( (dev->vendor == 0x8086) && (dev->device == 0x24c5) )	/*Try to restore the soundcard's config*/
	{
	    printk("Resuming sound card\n");
	    PREPARE_WORK(&work, &delayed_resume, dev);
	    /* mdelay(2000); *this does NOT work. I have to use schedule_delayed_work*/
	    schedule_delayed_work(&work, 2000);
	}
	return 0;
		
}

static void __devexit dummy_remove(struct pci_dev *pci_dev)
{
	printk("%s\n", __FUNCTION__);

	return;
}

static int __devinit dummy_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
{
	printk("%s\n", __FUNCTION__);
	
	if( (pci_dev->vendor == 0x8086 ) && (pci_dev->device == 0x24c5) )
	{
		INIT_WORK(&work, &delayed_resume, NULL); 
	}
	
	return 0;
}

static struct pci_driver dummy_pci_driver = {
	.name		= "dummy_driver",
	.id_table	= dummy_pci_tbl,
	.probe		= dummy_probe,
	.remove		= __devexit_p(dummy_remove),
#ifdef CONFIG_PM
	.suspend	= dummy_pm_suspend,
	.resume		= dummy_pm_resume,
#endif /* CONFIG_PM */
};

static int dummydriver_init_module(void)
{
	printk( KERN_DEBUG "Module dummydriver init\n" );
	
	if (!pci_register_driver(&dummy_pci_driver))
	{
		pci_unregister_driver(&dummy_pci_driver);
                return -ENODEV;
	}
	
	return 0;
}

static void dummydriver_exit_module(void)
{
	printk( KERN_DEBUG "Module dummydriver exit\n" );
	pci_unregister_driver(&dummy_pci_driver);
}

module_init(dummydriver_init_module);
module_exit(dummydriver_exit_module);

Re: pci device resume too early?

[Matthew Garrett]

On Wed, 2004-07-28 at 19:53 +0200, Stefan Dösinger wrote:

> The problem is that directly after S3 resume, any attempt to write to pci 
> configuration registers of three of my devices(00:1d.7, 00:1f.5, 00:1f.6) 
> locks up my system. After some testing, I found out that pci_restore_state 
> works nice if I place it into a function which is scheduled with 
> schedule_delayed_work. I use my dummydriver module for testing.

Ooh, neat. This might explain the problems I have with yenta resuming on
my Thinkpad 240X. pci_restore_state is called from drivers/pci/pci-
driver.c (see pci_default_resume), and from some specific drivers (it
can probably be removed from them now though, really). That gets called
from the chain of things called in device_resume in
drivers/base/power/resume.c - it steps through each registered driver
and calls the associated resume method. For PCI stuff, that will either
be pci_default_resume or a driver-specific resume method. device_resume
is called from suspend_finish in kernel/power/main.c.

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org



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Re: pci device resume too early?

[Stefan Dösinger]

Hi,

> Ooh, neat. This might explain the problems I have with yenta resuming on
> my Thinkpad 240X. pci_restore_state is called from drivers/pci/pci-
> driver.c (see pci_default_resume), and from some specific drivers (it
> can probably be removed from them now though, really). That gets called
> from the chain of things called in device_resume in
> drivers/base/power/resume.c - it steps through each registered driver
> and calls the associated resume method. For PCI stuff, that will either
> be pci_default_resume or a driver-specific resume method. device_resume
> is called from suspend_finish in kernel/power/main.c.

Thanks for the informations.
I moved device_resume(); in suspend_finish to be called after 
pm_ops->finish(state); and my system resumes MUCH nicer.
Sound resume works, usb-uhci resume works, ehci pci restore works. My suspend 
script will shink a lot.

That's what suspend_finish looks like:

static void suspend_finish(u32 state)
{
	if (pm_ops && pm_ops->finish)
		pm_ops->finish(state);
	device_resume();	/*Call it after pm_ops->finish*/	
	thaw_processes();
	pm_restore_console();
}

Can you try if this helps your yenta?



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Re: pci device resume too early?

[Luca]

Il Wed, Jul 28, 2004 at 09:18:52PM +0200, Stefan Dösinger ha scritto: 
> I moved device_resume(); in suspend_finish to be called after 
> pm_ops->finish(state); and my system resumes MUCH nicer.
> Sound resume works, usb-uhci resume works, ehci pci restore works. My suspend 
> script will shink a lot.
> 
> That's what suspend_finish looks like:
> 
> static void suspend_finish(u32 state)
> {
> 	if (pm_ops && pm_ops->finish)
> 		pm_ops->finish(state);
> 	device_resume();	/*Call it after pm_ops->finish*/	
> 	thaw_processes();
> 	pm_restore_console();
> }

Well, it may work but it's not correct. ->finish is meant to be called
to finalize the wakeup procedure *after* devices are waked up.

ACPI finish calls acpi_leave_sleep_state() and restore the waking
vectore. I'm not an ACPI guru but my guess is that what you need is
in acpi_leave_sleep_state().

If that's the case we may want to split the finish callback (say
prepare_wake and finish_wake).

Luca
-- 
Home: http://kronoz.cjb.net
"In linea di principio sarei indifferente al natale, se solo il natale
 ricambiasse la cortesia e mi lasciasse in pace." -- Marco d'Itri


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Re: pci device resume too early?

[Matthew Garrett]

On Wed, 2004-07-28 at 21:18 +0200, Stefan Dösinger wrote:

> Can you try if this helps your yenta?

Hmm. Sadly not. If pci_restore_state is called on my yenta, every other
character of the next printk is missing and then the machine hangs. I'm
at something of a loss as to why it does this...

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org



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RE: pci device resume too early?

[Li, Shaohua]

How about add one line in pci_default_resume just like this:

static void pci_default_resume(struct pci_dev *pci_dev)
{
+	pci_set_power_state(pci_dev, 0);
	/* restore the PCI config space */
	pci_restore_state(pci_dev, pci_dev->saved_config_space);
	/* if the device was enabled before suspend, reenable */


Thanks,
Shaohua
>-----Original Message-----
>From: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org [mailto:acpi-devel-
>admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of stefandoesinger-RbZlAiThDcE@public.gmane.org
>Sent: Thursday, July 29, 2004 1:54 AM
>To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>Subject: [ACPI] pci device resume too early?
>
>Hello,
>I have problems with a few pci devices after resume. Hardware
environment
>is a
>acer Travelmate 803(lspci attached), I use an unpatched linux-2.6.8-rc2
>kernel.
>
>The problem is that directly after S3 resume, any attempt to write to
pci
>configuration registers of three of my devices(00:1d.7, 00:1f.5,
00:1f.6)
>locks up my system. After some testing, I found out that
pci_restore_state
>works nice if I place it into a function which is scheduled with
>schedule_delayed_work. I use my dummydriver module for testing.
>
>Using mdelay(something) instead of scheduling a work doesn't help, so
it's
>not
>the hardware which needs some time.
>Is it possible that the driver's resume functions are called too early?
Can
>you point me to the place in the acpi code which calls the resume
methods
>that I can do further testing? I couldn't find it.
>
>Thanks in advance,
>Stefan


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Re: pci device resume too early?

[Stefan Dösinger]

Hi,

> Well, it may work but it's not correct. ->finish is meant to be called
> to finalize the wakeup procedure *after* devices are waked up.
>
> ACPI finish calls acpi_leave_sleep_state() and restore the waking
> vectore. I'm not an ACPI guru but my guess is that what you need is
> in acpi_leave_sleep_state().

You're right.

acpi_leave_sleep_state(state);
device_resume();
if (pm_ops && pm_ops->finish)
	pm_ops->finish(state);

Works too!

Stefan


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Re: pci device resume too early?

[Stefan Dösinger]

[-- Attachment #1: Type: text/plain, Size: 545 bytes --]

Hi,

> ACPI finish calls acpi_leave_sleep_state() and restore the waking
> vectore. I'm not an ACPI guru but my guess is that what you need is
> in acpi_leave_sleep_state().
>
> If that's the case we may want to split the finish callback (say
> prepare_wake and finish_wake).
I've got a small patch which introduces ->leave function which calls(if acpi 
is used) acpi_leave_sleep_state and acpi_disable_wakeup_device which are 
needed for me to make device resume work properly.

Hope it's correct and you like it,
Stefan Dösinger

[-- Attachment #2: resume-finish-split.patch --]
[-- Type: text/x-diff, Size: 1774 bytes --]

--- linux-2.6.8-rc2/include/linux/pm.h	2004-08-04 20:36:48.044455680 +0200
+++ include/linux/pm.h	2004-08-04 19:50:07.000000000 +0200
@@ -214,6 +214,7 @@
 	u32	pm_disk_mode;
 	int (*prepare)(u32 state);
 	int (*enter)(u32 state);
+	int (*leave)(u32 state);
 	int (*finish)(u32 state);
 };
 
--- linux-2.6.8-rc2/kernel/power/main.c	2004-08-04 20:36:17.755060368 +0200
+++ kernel/power/main.c	2004-08-04 19:52:26.000000000 +0200
@@ -108,6 +108,8 @@
 
 static void suspend_finish(u32 state)
 {
+	if (pm_ops && pm_ops->leave)
+		pm_ops->leave(state);
 	device_resume();
 	if (pm_ops && pm_ops->finish)
 		pm_ops->finish(state);
--- linux-2.6.8-rc2/drivers/acpi/sleep/main.c	2004-08-04 20:29:23.863981376 +0200
+++ drivers/acpi/sleep/main.c	2004-08-04 20:33:41.348837728 +0200
@@ -127,7 +127,23 @@
 	return ACPI_SUCCESS(status) ? 0 : -EFAULT;
 }
 
+/**
+ *	acpi_pm_leave - Make system ready to resume devices.
+ *	@pm_state:		State we're coming out of.
+ *
+ *	This is called after we wake back up and before device
+ *	resume methods are called.
+ */
+
+static int acpi_pm_leave(u32 pm_state)
+{
+	u32 acpi_state = acpi_suspend_states[pm_state];
 
+	acpi_leave_sleep_state(acpi_state);
+	acpi_disable_wakeup_device(acpi_state);
+	
+	return 0;
+}
 /**
  *	acpi_pm_finish - Finish up suspend sequence.
  *	@pm_state:		State we're coming out of.
@@ -140,9 +156,6 @@
 {
 	u32 acpi_state = acpi_suspend_states[pm_state];
 
-	acpi_leave_sleep_state(acpi_state);
-	acpi_disable_wakeup_device(acpi_state);
-
 	/* reset firmware waking vector */
 	acpi_set_firmware_waking_vector((acpi_physical_address) 0);
 
@@ -170,6 +183,7 @@
 static struct pm_ops acpi_pm_ops = {
 	.prepare	= acpi_pm_prepare,
 	.enter		= acpi_pm_enter,
+	.leave		= acpi_pm_leave,
 	.finish		= acpi_pm_finish,
 };