[+cc PHY and r8169 maintainers, LKML] Hi Matthew, On Wed, Mar 27, 2019 at 02:15:53PM -0400, tedheadster wrote: > The r8169 driver is not recognizing my CardBus ethernet card depending > on the chipset it has. It seems to be related to the PCI bus > recognizing the card. It works with some hardware and not with others > on the same kernel. > > This is with both the 5.1.0-rc2 and 5.0.4 kernels, so I am up to date > with patches. I assume this has never worked, i.e., it is not a regression? If it *is* a regression, bisection is a possible approach if nobody has a better idea. > I have been able to debug it down to mdiobus_scan() returning > returned -EIO, but that failure probably should not happen. I can't connect this failure to PCI yet (at least, I don't know enough to connect the dots). Maybe the PHY or r8169 folks can shed more light. > Below is the relevant PCI information: > > Failing systems: > - The same 81801 bridge chip, different CardBus chips > > 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge > [8086:2448] (rev 81) > 02:00.0 CardBus bridge [0607]: Texas Instruments PCI4520 PC card > Cardbus Controller [104c:ac46] (rev 01) > 02:00.1 CardBus bridge [0607]: Texas Instruments PCI4520 PC card > Cardbus Controller [104c:ac46] (rev 01) > 07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. > RTL8169 PCI Gigabit Ethernet Controller [10ec:8169] (rev 10) > > 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge > [8086:2448] (rev 81) > 02:01.0 CardBus bridge [0607]: Texas Instruments PCI1520 PC card > Cardbus Controller [104c:ac55] (rev 01) > 02:01.1 CardBus bridge [0607]: Texas Instruments PCI1520 PC card > Cardbus Controller [104c:ac55] (rev 01) > 03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. > RTL8169 PCI Gigabit Ethernet Controller [10ec:8169] (rev 10) > > Working systems: > > 00:01.0 PCI bridge [0604]: Intel Corporation 440BX/ZX/DX - > 82443BX/ZX/DX AGP bridge [8086:7191] (rev 02) > 00:04.0 CardBus bridge [0607]: Texas Instruments PCI1220 [104c:ac17] (rev 02) > 00:04.1 CardBus bridge [0607]: Texas Instruments PCI1220 [104c:ac17] (rev 02) > 06:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. > RTL8169 PCI Gigabit Ethernet Controller [10ec:8169] (rev 10) > > 00:00.0 Host bridge [0600]: Cyrix Corporation PCI Master [1078:0001] > 00:11.0 CardBus bridge [0607]: Texas Instruments PCI1221 [104c:ac19] > 00:11.1 CardBus bridge [0607]: Texas Instruments PCI1221 [104c:ac19] > 01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. > RTL8169 PCI Gigabit Ethernet Controller [10ec:8169] (rev 10) > > - Matthew Whitehead
