[+cc linux-ide]
On Sun, Oct 04, 2015 at 09:37:34PM +0200, Frank de Jong wrote:
> Hi,
>
> Somewhere between kernel v3.15 and v3.18 several PCI ID refs went missing.
> By accident, I presume. Kernel v3.14 is fine.
>
> This might just be the tip of iceberg, so to speak, as more PCI ID
> refs are probably missing.
>
> In v3.14:
> - "0000:03:00.0" was shown as "pata_pdc2027x" (PCI ID: 105a:4d68)
> - "0000:00:1f.2" was shown as "ahci" (PCI ID: 8086:1c02)
> - "0000:06:00.0" was shown as "ahci" (PCI ID: 1b21:0612)
>
> # snippet from /proc/interrupts
> CPU0 CPU1
> 0: 15 0 IO-APIC-edge timer
> 1: 31 0 IO-APIC-edge i8042
> 4: 39043 0 IO-APIC-edge serial
> 5: 1 0 IO-APIC-edge parport0
> 8: 111 0 IO-APIC-edge rtc0
> 9: 3 0 IO-APIC-fasteoi acpi
> 12: 144 0 IO-APIC-edge i8042
> 16: 99 0 IO-APIC 16-fasteoi ehci_hcd:usb1
> 18: 5173 0 IO-APIC 18-fasteoi 0000:03:00.0
> 19: 2871417 0 IO-APIC 19-fasteoi eth0
> 23: 33 0 IO-APIC 23-fasteoi ehci_hcd:usb4
> 24: 759 0 PCI-MSI-edge 0000:00:1f.2
> 25: 16582 0 PCI-MSI-edge 0000:06:00.0
I think the names shown in /proc/interrupts are supplied by the driver
when it calls request_irq(), so I don't think this is a PCI problem.
It might be a driver problem, but I think it's more likely an
intentional change, either this one or something similar: 4f37b504768c
("libata: Use dev_name() for request_irq() to distinguish devices")
> 26: 29172 0 PCI-MSI-edge eth1
> 27: 502 0 PCI-MSI-edge snd_hda_intel
> 28: 0 0 PCI-MSI-edge xhci_hcd
> 29: 0 0 PCI-MSI-edge xhci_hcd
> 30: 0 0 PCI-MSI-edge xhci_hcd
> 31: 17 0 PCI-MSI-edge i915
>
> # snippet from lspci
> 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series
> Chipset Family SATA AHCI Controller (rev 05) (prog-if 01 [AHCI 1.0])
> Subsystem: Micro-Star International Co., Ltd. Device 7732
> Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 24
> I/O ports at f0b0 [size=8]
> I/O ports at f0a0 [size=4]
> I/O ports at f090 [size=8]
> I/O ports at f080 [size=4]
> I/O ports at f060 [size=32]
> Memory at f7f05000 (32-bit, non-prefetchable) [size=2K]
> Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> Capabilities: [70] Power Management version 3
> Capabilities: [a8] SATA HBA v1.0
> Capabilities: [b0] PCI Advanced Features
> Kernel driver in use: ahci
>
> 03:00.0 Mass storage controller: Promise Technology, Inc. PDC20268
> [Ultra100 TX2] (rev 02) (prog-if 85)
> Subsystem: Promise Technology, Inc. Ultra100 TX2
> Flags: bus master, 66MHz, slow devsel, latency 64, IRQ 18
> I/O ports at e0c0 [size=8]
> I/O ports at e0b0 [size=4]
> I/O ports at e0a0 [size=8]
> I/O ports at e090 [size=4]
> I/O ports at e080 [size=16]
> Memory at f7e24000 (32-bit, non-prefetchable) [size=16K]
> Expansion ROM at f7e20000 [disabled] [size=16K]
> Capabilities: [60] Power Management version 1
> Kernel driver in use: pata_pdc2027x
>
> 06:00.0 SATA controller: ASMedia Technology Inc. ASM1062 Serial ATA
> Controller (rev 01) (prog-if 01 [AHCI 1.0])
> Subsystem: Micro-Star International Co., Ltd. Device 7732
> Flags: bus master, fast devsel, latency 0, IRQ 25
> I/O ports at c050 [size=8]
> I/O ports at c040 [size=4]
> I/O ports at c030 [size=8]
> I/O ports at c020 [size=4]
> I/O ports at c000 [size=32]
> Memory at f7c00000 (32-bit, non-prefetchable) [size=512]
> Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit-
> Capabilities: [78] Power Management version 3
> Capabilities: [80] Express Legacy Endpoint, MSI 00
> Capabilities: [100] Virtual Channel
> Kernel driver in use: ahci
>
> Kind regards,
> Frank de Jong
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