Re: Sometimes WLE900VX 9880 NIC does not appear in lspci.

From: Sebastian Gottschall <s.gottschall@dd-wrt.com>
To: Ben Greear <greearb@candelatech.com>,
	ath10k <ath10k@lists.infradead.org>
Subject: Re: Sometimes WLE900VX 9880 NIC does not appear in lspci.
Date: Wed, 18 Oct 2017 09:52:48 +0200	[thread overview]
Message-ID: <16143514-f652-56f9-ff65-4dffec8a6417@dd-wrt.com> (raw)
In-Reply-To: <3eefa2db-33a1-ceb3-730b-62627239e873@candelatech.com>

Am 17.10.2017 um 20:47 schrieb Ben Greear:
> Sometimes, when booting one of my apu2 systems with two of the WLE900VX
> NICs in it, one of them does not show up in lspci.

this is a well known bug. but its a bug in the apu

i was talking about such issues with pcengines already  but so solution 
yet.

>
> Here is the pertinent (I think) bit of dmesg:
>
> OK case (the radio in questions shows up on bus 05):
>
> [    0.781610] pci 0000:04:00.0: [8086:157b] type 00 class 0x020000
> [    0.781644] pci 0000:04:00.0: reg 0x10: [mem 0xfe700000-0xfe71ffff]
> [    0.781705] pci 0000:04:00.0: reg 0x18: [io  0x3000-0x301f]
> [    0.781724] pci 0000:04:00.0: reg 0x1c: [mem 0xfe720000-0xfe723fff]
> [    0.781920] pci 0000:04:00.0: PME# supported from D0 D3hot D3cold
> [    0.784265] pci 0000:00:02.4: PCI bridge to [bus 04]
> [    0.787984] pci 0000:00:02.4:   bridge window [io 0x3000-0x3fff]
> [    0.787991] pci 0000:00:02.4:   bridge window [mem 
> 0xfe700000-0xfe7fffff]
> [    0.788157] pci 0000:05:00.0: [168c:003c] type 00 class 0x028000
> [    0.788192] pci 0000:05:00.0: reg 0x10: [mem 0xfe200000-0xfe3fffff 
> 64bit]
> [    0.788296] pci 0000:05:00.0: reg 0x30: [mem 0xfe400000-0xfe40ffff 
> pref]
> [    0.788428] pci 0000:05:00.0: supports D1 D2
> [    0.791270] pci 0000:00:02.5: PCI bridge to [bus 05]
> [    0.794970] pci 0000:00:02.5:   bridge window [mem 
> 0xfe200000-0xfe4fffff]
> [    0.795728] ACPI: PCI Interrupt Link [INTA] (IRQs *3 5 7 10 11 12 15)
> ....
>
> Failure case:
>
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:04:00.0: 
> [8086:10d3] type 00 class 0x020000
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:04:00.0: reg 
> 0x10: [mem 0xf6800000-0xf681ffff]
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:04:00.0: reg 
> 0x18: [io  0xd000-0xd01f]
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:04:00.0: reg 
> 0x1c: [mem 0xf6820000-0xf6823fff]
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:04:00.0: PME# 
> supported from D0 D3hot D3cold
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:04:00.0: System 
> wakeup disabled by ACPI
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:00:1c.1: PCI 
> bridge to [bus 04]
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:00:1c.1: bridge 
> window [io  0xd000-0xdfff]
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:00:1c.1: bridge 
> window [mem 0xf6800000-0xf71fffff]
> Jun 09 09:23:37 localhost.localdomain kernel: pci 0000:00:1c.1: bridge 
> window [mem 0xf0000000-0xf09fffff 64bit pref]
> Jun 09 09:23:37 localhost.localdomain kernel: ACPI: PCI Interrupt Link 
> [LNKA] (IRQs 3 4 5 6 10 *11 12 14 15)
> ...
>
>
> Rebooting the system usually 'fixes' the problem, but sometimes it 
> takes several reboots.
>
>
> Does this provide any clues?
>
> Any suggested work-arounds I could try?
>
> Thanks,
> Ben
>

-- 
Mit freundlichen Grüssen / Regards

Sebastian Gottschall / CTO

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