Re: PCI device driver broken between 4.2 and 4.3

Date: Tue Jan 26 2016 - 14:04:57 EST

I confirmed it works in


and do not works in


26.01.2016 18:32, Bjorn Helgaas ÐÐÑÐÑ:
[+cc Jiang]

On Mon, Jan 25, 2016 at 03:52:51PM -0600, Bjorn Helgaas wrote:

On Sun, Jan 24, 2016 at 04:50:08PM +0300, ÐÐÐÐ ÐÐÑÐÐ wrote:
Okay. I've sent logs (dmesg and lspci) from both 4.2 and 4.3 to bugzilla
I don't see anything wrong in either log. Both v4.2 and v4.3
enumerate the device the same way, and the driver seems to claim it
the same way:

pci 0000:0d:00.0: [10b5:9030] type 00 class 0x078000
pci 0000:0d:00.0: reg 0x14: [io 0x2100-0x217f]
pci 0000:0d:00.0: reg 0x18: [io 0x2380-0x239f]
pci 0000:0d:00.0: PME# supported from D0 D3hot
pci 0000:0d:01.0: [10b5:9030] type 00 class 0x078000
pci 0000:0d:01.0: reg 0x14: [io 0x2180-0x21ff]
pci 0000:0d:01.0: reg 0x18: [io 0x23a0-0x23bf]
pci 0000:0d:01.0: PME# supported from D0 D3hot
pci 0000:0d:02.0: [10b5:9030] type 00 class 0x078000
pci 0000:0d:02.0: reg 0x14: [io 0x2200-0x227f]
pci 0000:0d:02.0: reg 0x18: [io 0x2280-0x22ff]
pci 0000:0d:02.0: reg 0x1c: [io 0x2300-0x237f]
pci 0000:0d:02.0: PME# supported from D0 D3hot

sja1000_plx_pci 0000:0d:02.0: Detected "Eclus CAN-200-PCI" card at slot #2
sja1000_plx_pci 0000:0d:02.0: Channel #1 at 0x0000000000012280, irq 22 registered as can0
sja1000_plx_pci 0000:0d:02.0: Channel #2 at 0x0000000000012300, irq 22 registered as can1
sja1000_plx_pci 0000:0d:02.0 can0: setting BTR0=0x03 BTR1=0x37

One option is always to bisect between v4.2 and v4.3 to see which
commit made it stop working. See
Jiang, ÐÐÐÐ bisected this to 991de2e59090 ("PCI, x86: Implement
pcibios_alloc_irq() and pcibios_free_irq()").

ÐÐÐÐ, please double-check and confirm that 890e4847587f works and
991de2e59090 fails.

Then please add some printks in the pcibios_enable_device() and
pcibios_alloc_irq() paths and in your driver to see exactly what changed
between 890e4847587f and 991de2e59090


23.01.2016 17:54, Bjorn Helgaas ÐÐÑÐÑ:
[+cc linux-kernel]


On Sat, Jan 23, 2016 at 1:08 AM, ÐÐÐÐ ÐÐÑÐÐ <oleg.moroz@xxxxxxxxxxxxx> wrote:
Hello. I've got a device driver for MIL-1553b card called TA1-PCI, which
could be found at
Card is using PLX_PCI9030 PCI controller.
Today i've found that this driver compiles, installes, but is not working as
it should.
Looks like it not receives any interrupts from PCI. I've test it again with
4.2 and it works okay. What changes was made in PCI subsystem from 4.2 to
which could have impact this driver work.
Thank you very much for this problem report. There were many PCI
changes between v4.2 and v4.3, and without more information, I can't
guess what might be causing this problem.

I opened a bug report at

Please attach complete dmesg logs for both v4.2 and v4.3 to that bug
report. Also, please attach the complete "lspci -vv" output (as


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