Re: use pci_alloc_irq_vectors issues

linux-pci.vger.kernel.org archive mirror
 help / color / mirror / Atom feed

* Re: use pci_alloc_irq_vectors issues
       [not found] <CA+i8gKJ1BnOE8tOzxfbFJcG1qa9XchiDBQSGZUHUOch6byi+tQ@mail.gmail.com>
@ 2016-10-17  8:01 ` Christoph Hellwig
       [not found]   ` <CA+i8gK+dxqJgAcANzsHecE4dD4tGARuaNka-29nZWdrRUL=+Hw@mail.gmail.com>
  0 siblings, 1 reply; 10+ messages in thread
From: Christoph Hellwig @ 2016-10-17  8:01 UTC (permalink / raw)
  To: Emmanuel Benisty; +Cc: tj, linux-ide, linux-pci

[added linux-ide and linux-pci to the CC list]

Hi Emmanuel,


> The following commit prevents my machine to boot properly:
> 
>     0b9e2988a ahci: use pci_alloc_irq_vectors
> 
> Crappy quality smartphone pic here: http://i.imgur.com/X1QETFi.jpg
> 
> Reverting this commit solves the issue.
> 
> Please let me know should you need any further info.

Can you send me the output ofthe following commands from a working
boot:

cat /proc/interrupts
lspci -vv
dmesg

Thanks a lot for the report

^ permalink raw reply	[flat|nested] 10+ messages in thread

[parent not found: <CA+i8gK+dxqJgAcANzsHecE4dD4tGARuaNka-29nZWdrRUL=+Hw@mail.gmail.com>]

* Re: use pci_alloc_irq_vectors issues
       [not found]   ` <CA+i8gK+dxqJgAcANzsHecE4dD4tGARuaNka-29nZWdrRUL=+Hw@mail.gmail.com>
@ 2016-10-17  9:26     ` Christoph Hellwig
  2016-10-17  9:33       ` Emmanuel Benisty
  0 siblings, 1 reply; 10+ messages in thread
From: Christoph Hellwig @ 2016-10-17  9:26 UTC (permalink / raw)
  To: Emmanuel Benisty; +Cc: Christoph Hellwig, tj, linux-ide, linux-pci

Hi Emmanuel,

can you run the lspci -vv command as again, but this time as root
user?  Also just to make sure I interpret your report correctly:
The ata3 devices that's creating the problems is the SK-Hynix device,
probably a SSD that shows up as ahci controller?

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17  9:26     ` Christoph Hellwig
@ 2016-10-17  9:33       ` Emmanuel Benisty
  2016-10-17 10:34         ` Christoph Hellwig
  0 siblings, 1 reply; 10+ messages in thread
From: Emmanuel Benisty @ 2016-10-17  9:33 UTC (permalink / raw)
  To: Christoph Hellwig; +Cc: tj, linux-ide, linux-pci

[-- Attachment #1: Type: text/plain, Size: 464 bytes --]

Hi Christoph,

On Mon, Oct 17, 2016 at 11:26 AM, Christoph Hellwig <hch@lst.de> wrote:
> can you run the lspci -vv command as again, but this time as root
> user?

Please find attached the new file.

> Also just to make sure I interpret your report correctly:
> The ata3 devices that's creating the problems is the SK-Hynix device,
> probably a SSD that shows up as ahci controller?

Yep, it's the only drive on this machine, which is indeed a SSD drive.

Thanks.

[-- Attachment #2: lspci.txt --]
[-- Type: text/plain, Size: 25676 bytes --]

00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
	Subsystem: Dell Device 0665
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: [e0] Vendor Specific Information: Len=0c <?>
	Kernel driver in use: bdw_uncore

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09) (prog-if 00 [VGA controller])
	Subsystem: Dell Device 0665
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 51
	Region 0: Memory at f6000000 (64-bit, non-prefetchable) [size=16M]
	Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
	Region 4: I/O ports at f000 [size=64]
	[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee00018  Data: 0000
	Capabilities: [d0] Power Management version 2
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [a4] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-
	Kernel driver in use: i915
	Kernel modules: i915

00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
	Subsystem: Dell Device 0665
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 52
	Region 0: Memory at f7318000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [50] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee003f8  Data: 0000
	Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0
			ExtTag- RBE-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel

00:04.0 Signal processing controller: Intel Corporation Broadwell-U Processor Thermal Subsystem (rev 09)
	Subsystem: Dell Device 0665
	Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at f7310000 (64-bit, non-prefetchable) [size=32K]
	Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
		Address: 00000000  Data: 0000
	Capabilities: [d0] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [e0] Vendor Specific Information: Len=0c <?>
	Kernel driver in use: proc_thermal
	Kernel modules: processor_thermal_device

00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03) (prog-if 30 [XHCI])
	Subsystem: Dell Device 0665
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 47
	Region 0: Memory at f7300000 (64-bit, non-prefetchable) [size=64K]
	Capabilities: [70] Power Management version 2
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
		Address: 00000000fee00358  Data: 0000
	Kernel driver in use: xhci_hcd

00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
	Subsystem: Dell Device 0665
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 49
	Region 0: Memory at f7320000 (64-bit, non-prefetchable) [size=32]
	Capabilities: [50] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee00398  Data: 0000
	Kernel driver in use: mei_me
	Kernel modules: mei_me

00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 42
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
	Memory behind bridge: f7200000-f72fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0
			ExtTag- RBE+
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
			ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp-
		LnkCtl:	ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
			Slot #0, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState+
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna+ CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF Not Supported ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled ARIFwd-
		LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee00258  Data: 0000
	Capabilities: [90] Subsystem: Dell Device 0665
	Capabilities: [a0] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [100 v0] #00
	Capabilities: [200 v1] L1 PM Substates
		L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
			  PortCommonModeRestoreTime=40us PortTPowerOnTime=10us
	Kernel driver in use: pcieport

00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin D routed to IRQ 43
	Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
	Memory behind bridge: f7100000-f71fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0
			ExtTag- RBE+
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #4, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
			ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
			Slot #3, PowerLimit 10.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState+
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna+ CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR-, OBFF Not Supported ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd-
		LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee00298  Data: 0000
	Capabilities: [90] Subsystem: Dell Device 0665
	Capabilities: [a0] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [100 v0] #00
	Capabilities: [200 v1] L1 PM Substates
		L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
			  PortCommonModeRestoreTime=40us PortTPowerOnTime=10us
	Kernel driver in use: pcieport

00:1c.5 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #6 (rev e3) (prog-if 00 [Normal decode])
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin B routed to IRQ 44
	Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
	Memory behind bridge: f7000000-f70fffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0
			ExtTag- RBE+
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
		LnkCap:	Port #6, Speed 5GT/s, Width x2, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
			ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 5GT/s, Width x2, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
		SltCap:	AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
			Slot #5, PowerLimit 25.000W; Interlock- NoCompl+
		SltCtl:	Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
			Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
		SltSta:	Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
			Changed: MRL- PresDet- LinkState+
		RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna+ CRSVisible-
		RootCap: CRSVisible-
		RootSta: PME ReqID 0000, PMEStatus- PMEPending-
		DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF Not Supported ARIFwd-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled ARIFwd-
		LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee002d8  Data: 0000
	Capabilities: [90] Subsystem: Dell Device 0665
	Capabilities: [a0] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [100 v0] #00
	Capabilities: [200 v1] L1 PM Substates
		L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
			  PortCommonModeRestoreTime=40us PortTPowerOnTime=10us
	Kernel driver in use: pcieport

00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
	Subsystem: Dell Device 0665
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: [e0] Vendor Specific Information: Len=0c <?>
	Kernel driver in use: lpc_ich
	Kernel modules: lpc_ich

00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03) (prog-if 01 [AHCI 1.0])
	Subsystem: Dell Device 0665
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 45
	Region 0: I/O ports at f0b0 [size=8]
	Region 1: I/O ports at f0a0 [size=4]
	Region 2: I/O ports at f090 [size=8]
	Region 3: I/O ports at f080 [size=4]
	Region 4: I/O ports at f060 [size=32]
	Region 5: Memory at f731e000 (32-bit, non-prefetchable) [size=2K]
	Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee002f8  Data: 0000
	Capabilities: [70] Power Management version 3
		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004
	Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
	Subsystem: Dell Device 0665
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin C routed to IRQ 18
	Region 0: Memory at f731d000 (64-bit, non-prefetchable) [size=256]
	Region 4: I/O ports at f040 [size=32]
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801

00:1f.6 Signal processing controller: Intel Corporation Wildcat Point-LP Thermal Management Controller (rev 03)
	Subsystem: Dell Device 0665
	Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin C routed to IRQ 18
	Region 0: Memory at f731c000 (64-bit, non-prefetchable) [size=4K]
	Capabilities: [50] Power Management version 3
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
		Address: 00000000  Data: 0000
	Kernel driver in use: intel_pch_thermal
	Kernel modules: intel_pch_thermal

01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5249 PCI Express Card Reader (rev 01)
	Subsystem: Dell Device 0665
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 48
	Region 0: Memory at f7200000 (32-bit, non-prefetchable) [size=4K]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1+,D2+,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee00378  Data: 0000
	Capabilities: [70] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 512 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 10.000W
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
			ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR+, OBFF Via message/WAKE#
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v2] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UESvrt:	DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
		AERCap:	First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
	Capabilities: [148 v1] Device Serial Number 00-00-00-01-00-4c-e0-00
	Capabilities: [158 v1] Latency Tolerance Reporting
		Max snoop latency: 3145728ns
		Max no snoop latency: 3145728ns
	Capabilities: [160 v1] L1 PM Substates
		L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
			  PortCommonModeRestoreTime=60us PortTPowerOnTime=60us
	Kernel driver in use: rtsx_pci
	Kernel modules: rtsx_pci

02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 61)
	Subsystem: Intel Corporation Dual Band Wireless-AC 7265
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 50
	Region 0: Memory at f7100000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: [c8] Power Management version 3
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee003b8  Data: 0000
	Capabilities: [40] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 unlimited
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0.000W
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd+ ExtTag- PhantFunc- AuxPwr+ NoSnoop+ FLReset-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L1, Exit Latency L0s <4us, L1 <32us
			ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF Via WAKE#
		DevCtl2: Completion Timeout: 16ms to 55ms, TimeoutDis-, LTR-, OBFF Disabled
		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v1] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UESvrt:	DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
		CESta:	RxErr- BadTLP+ BadDLLP- Rollover- Timeout- NonFatalErr+
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
		AERCap:	First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
	Capabilities: [140 v1] Device Serial Number 48-45-20-ff-ff-7f-db-f9
	Capabilities: [14c v1] Latency Tolerance Reporting
		Max snoop latency: 3145728ns
		Max no snoop latency: 3145728ns
	Capabilities: [154 v1] L1 PM Substates
		L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
			  PortCommonModeRestoreTime=30us PortTPowerOnTime=60us
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

03:00.0 SATA controller: Device 1c5c:1193 (rev 10) (prog-if 01 [AHCI 1.0])
	Subsystem: Device 1c5c:0100
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 46
	Region 5: Memory at f7020000 (32-bit, non-prefetchable) [size=4K]
	Expansion ROM at f7000000 [disabled] [size=128K]
	Capabilities: [80] Power Management version 3
		Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0+,D1+,D2-,D3hot+,D3cold-)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee00318  Data: 0000
	Capabilities: [c0] Express (v2) Endpoint, MSI 00
		DevCap:	MaxPayload 512 bytes, PhantFunc 0, Latency L0s <128ns, L1 unlimited
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 0.000W
		DevCtl:	Report errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
			RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 512 bytes
		DevSta:	CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
		LnkCap:	Port #0, Speed 5GT/s, Width x4, ASPM L1, Exit Latency L0s unlimited, L1 <64us
			ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 5GT/s, Width x2, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF Not Supported
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, OBFF Disabled
		LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
			 Compliance De-emphasis: -6dB
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [100 v2] Advanced Error Reporting
		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
		UESvrt:	DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
		AERCap:	First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn+
	Capabilities: [240 v1] L1 PM Substates
		L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
			  PortCommonModeRestoreTime=18us PortTPowerOnTime=10us
	Capabilities: [2a8 v1] Latency Tolerance Reporting
		Max snoop latency: 3145728ns
		Max no snoop latency: 3145728ns
	Kernel driver in use: ahci


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17  9:33       ` Emmanuel Benisty
@ 2016-10-17 10:34         ` Christoph Hellwig
  2016-10-17 11:12           ` Emmanuel Benisty
  0 siblings, 1 reply; 10+ messages in thread
From: Christoph Hellwig @ 2016-10-17 10:34 UTC (permalink / raw)
  To: Emmanuel Benisty; +Cc: Christoph Hellwig, tj, linux-ide, linux-pci

On Mon, Oct 17, 2016 at 11:33:03AM +0200, Emmanuel Benisty wrote:
> Hi Christoph,
> 
> On Mon, Oct 17, 2016 at 11:26 AM, Christoph Hellwig <hch@lst.de> wrote:
> > can you run the lspci -vv command as again, but this time as root
> > user?
> 
> Please find attached the new file.
> 
> > Also just to make sure I interpret your report correctly:
> > The ata3 devices that's creating the problems is the SK-Hynix device,
> > probably a SSD that shows up as ahci controller?
> 
> Yep, it's the only drive on this machine, which is indeed a SSD drive.

Thanks.  Still can't make sense of the issue, can you apply the debug
patch below, and try to caputure the screen output when the ata
device is beeing probed?

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ba5f11c..458d139 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1422,6 +1422,7 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
 			PCI_IRQ_MSIX | PCI_IRQ_MSI);
 	if (nvec > 0) {
 		if (!(readl(hpriv->mmio + HOST_CTL) & HOST_MRSM)) {
+			printk(KERN_INFO "ahci: using %d MSI(-X) vectors)\n", nvec);
 			hpriv->get_irq_vector = ahci_get_irq_vector;
 			hpriv->flags |= AHCI_HFLAG_MULTI_MSI;
 			return nvec;
@@ -1439,17 +1440,22 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
 	 * -ENOSPC indicated we don't have enough vectors.  Don't bother trying
 	 * a single vectors for any other error:
 	 */
-	if (nvec < 0 && nvec != -ENOSPC)
+	if (nvec < 0 && nvec != -ENOSPC) {
+		printk("ahci: pci_alloc_irq_vectors (multi) returned %d\n", nvec);
 		return nvec;
+	}
 
 	/*
 	 * If the host is not capable of supporting per-port vectors, fall
 	 * back to single MSI before finally attempting single MSI-X.
 	 */
 	nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
+	printk("ahci: pci_alloc_irq_vectors (MSI) returned %d\n", nvec);
 	if (nvec == 1)
 		return nvec;
-	return pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
+	nvec =  pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
+	printk("ahci: pci_alloc_irq_vectors (MSI-X) returned %d\n", nvec);
+	return nvec;
 }
 
 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)

^ permalink raw reply related	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17 10:34         ` Christoph Hellwig
@ 2016-10-17 11:12           ` Emmanuel Benisty
  2016-10-17 12:02             ` Christoph Hellwig
  0 siblings, 1 reply; 10+ messages in thread
From: Emmanuel Benisty @ 2016-10-17 11:12 UTC (permalink / raw)
  To: Christoph Hellwig; +Cc: tj, linux-ide, linux-pci

On Mon, Oct 17, 2016 at 12:34 PM, Christoph Hellwig <hch@lst.de> wrote:
> On Mon, Oct 17, 2016 at 11:33:03AM +0200, Emmanuel Benisty wrote:
>> Hi Christoph,
>>
>> On Mon, Oct 17, 2016 at 11:26 AM, Christoph Hellwig <hch@lst.de> wrote:
>> > can you run the lspci -vv command as again, but this time as root
>> > user?
>>
>> Please find attached the new file.
>>
>> > Also just to make sure I interpret your report correctly:
>> > The ata3 devices that's creating the problems is the SK-Hynix device,
>> > probably a SSD that shows up as ahci controller?
>>
>> Yep, it's the only drive on this machine, which is indeed a SSD drive.
>
> Thanks.  Still can't make sense of the issue, can you apply the debug
> patch below, and try to caputure the screen output when the ata
> device is beeing probed?

Part 1: http://i.imgur.com/Prq86vT.jpg
Part 2: http://i.imgur.com/EBxV25r.jpg
Part 3: http://i.imgur.com/eBDVVXc.jpg

Thanks

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17 11:12           ` Emmanuel Benisty
@ 2016-10-17 12:02             ` Christoph Hellwig
  2016-10-17 12:48               ` Emmanuel Benisty
  0 siblings, 1 reply; 10+ messages in thread
From: Christoph Hellwig @ 2016-10-17 12:02 UTC (permalink / raw)
  To: Emmanuel Benisty; +Cc: Christoph Hellwig, tj, linux-ide, linux-pci

Thanks a lot!  I think the current check on when to fall back from
the multi-MSI to the single-MSI case is too narrow and we should
just always fall back.

Can you see if the patch below fixes your issue (revert the debug patch
first, please)?

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ba5f11c..b4b8004 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1436,13 +1436,6 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
 	}
 
 	/*
-	 * -ENOSPC indicated we don't have enough vectors.  Don't bother trying
-	 * a single vectors for any other error:
-	 */
-	if (nvec < 0 && nvec != -ENOSPC)
-		return nvec;
-
-	/*
 	 * If the host is not capable of supporting per-port vectors, fall
 	 * back to single MSI before finally attempting single MSI-X.
 	 */

^ permalink raw reply related	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17 12:02             ` Christoph Hellwig
@ 2016-10-17 12:48               ` Emmanuel Benisty
  2016-10-17 19:28                 ` Christoph Hellwig
  0 siblings, 1 reply; 10+ messages in thread
From: Emmanuel Benisty @ 2016-10-17 12:48 UTC (permalink / raw)
  To: Christoph Hellwig; +Cc: tj, linux-ide, linux-pci

On Mon, Oct 17, 2016 at 2:02 PM, Christoph Hellwig <hch@lst.de> wrote:
> Thanks a lot!  I think the current check on when to fall back from
> the multi-MSI to the single-MSI case is too narrow and we should
> just always fall back.
>
> Can you see if the patch below fixes your issue (revert the debug patch
> first, please)?
>
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index ba5f11c..b4b8004 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -1436,13 +1436,6 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
>         }
>
>         /*
> -        * -ENOSPC indicated we don't have enough vectors.  Don't bother trying
> -        * a single vectors for any other error:
> -        */
> -       if (nvec < 0 && nvec != -ENOSPC)
> -               return nvec;
> -
> -       /*
>          * If the host is not capable of supporting per-port vectors, fall
>          * back to single MSI before finally attempting single MSI-X.
>          */

Sorry Christoph, issue is still there:

http://i.imgur.com/smDjT0y.jpg
http://i.imgur.com/VV4FGI1.jpg
http://i.imgur.com/Xqdayvj.jpg

Thanks

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17 12:48               ` Emmanuel Benisty
@ 2016-10-17 19:28                 ` Christoph Hellwig
  2016-10-17 20:51                   ` Emmanuel Benisty
  0 siblings, 1 reply; 10+ messages in thread
From: Christoph Hellwig @ 2016-10-17 19:28 UTC (permalink / raw)
  To: Emmanuel Benisty; +Cc: Christoph Hellwig, tj, linux-ide, linux-pci

Hi Emmanuel,

I think I have an idea now - we are accidentally hitting the per-port
MSI vector case because your SSD only has one AHCI "port".  Can you
try the below patch:

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ba5f11c..3c2f92b 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1413,6 +1413,7 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
 	if (hpriv->flags & AHCI_HFLAG_NO_MSI)
 		return -ENODEV;
 
+	if (n_ports > 1) {
 	/*
 	 * If number of MSIs is less than number of ports then Sharing Last
 	 * Message mode could be enforced. In this case assume that advantage
@@ -1434,6 +1435,7 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
 		printk(KERN_INFO "ahci: MRSM is on, fallback to single MSI\n");
 		pci_free_irq_vectors(pdev);
 	}
+	}
 
 	/*
 	 * -ENOSPC indicated we don't have enough vectors.  Don't bother trying

^ permalink raw reply related	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17 19:28                 ` Christoph Hellwig
@ 2016-10-17 20:51                   ` Emmanuel Benisty
  2016-10-17 20:55                     ` Christoph Hellwig
  0 siblings, 1 reply; 10+ messages in thread
From: Emmanuel Benisty @ 2016-10-17 20:51 UTC (permalink / raw)
  To: Christoph Hellwig; +Cc: tj, linux-ide, linux-pci

Hi Christoph,

On Mon, Oct 17, 2016 at 9:28 PM, Christoph Hellwig <hch@lst.de> wrote:
> I think I have an idea now - we are accidentally hitting the per-port
> MSI vector case because your SSD only has one AHCI "port".  Can you
> try the below patch:
>
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index ba5f11c..3c2f92b 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -1413,6 +1413,7 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
>         if (hpriv->flags & AHCI_HFLAG_NO_MSI)
>                 return -ENODEV;
>
> +       if (n_ports > 1) {
>         /*
>          * If number of MSIs is less than number of ports then Sharing Last
>          * Message mode could be enforced. In this case assume that advantage
> @@ -1434,6 +1435,7 @@ static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
>                 printk(KERN_INFO "ahci: MRSM is on, fallback to single MSI\n");
>                 pci_free_irq_vectors(pdev);
>         }
> +       }
>
>         /*
>          * -ENOSPC indicated we don't have enough vectors.  Don't bother trying

This patch solved the issue, thanks a lot.

Cheers.

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: use pci_alloc_irq_vectors issues
  2016-10-17 20:51                   ` Emmanuel Benisty
@ 2016-10-17 20:55                     ` Christoph Hellwig
  0 siblings, 0 replies; 10+ messages in thread
From: Christoph Hellwig @ 2016-10-17 20:55 UTC (permalink / raw)
  To: Emmanuel Benisty; +Cc: Christoph Hellwig, tj, linux-ide, linux-pci

On Mon, Oct 17, 2016 at 10:51:44PM +0200, Emmanuel Benisty wrote:
> This patch solved the issue, thanks a lot.

Thanks for testing!

I'll resend it to Tejun with proper indentation and a changelog
tomorrow.

^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2016-10-17 20:55 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
     [not found] <CA+i8gKJ1BnOE8tOzxfbFJcG1qa9XchiDBQSGZUHUOch6byi+tQ@mail.gmail.com>
2016-10-17  8:01 ` use pci_alloc_irq_vectors issues Christoph Hellwig
     [not found]   ` <CA+i8gK+dxqJgAcANzsHecE4dD4tGARuaNka-29nZWdrRUL=+Hw@mail.gmail.com>
2016-10-17  9:26     ` Christoph Hellwig
2016-10-17  9:33       ` Emmanuel Benisty
2016-10-17 10:34         ` Christoph Hellwig
2016-10-17 11:12           ` Emmanuel Benisty
2016-10-17 12:02             ` Christoph Hellwig
2016-10-17 12:48               ` Emmanuel Benisty
2016-10-17 19:28                 ` Christoph Hellwig
2016-10-17 20:51                   ` Emmanuel Benisty
2016-10-17 20:55                     ` Christoph Hellwig

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).