On Tue, Nov 04, 2014 at 09:19:26AM +0100, Stam, Michel [FINT] wrote: > Interesting, as the commit itself is a revert from a kernel back to 2.6 > somewhere. The problem I had is related to the PHY being reset on > interface-up, can you confirm that you require this? I can't confirm what exactly is needed on arndale. I'm neither expert in USB or ethernet. However, I can confirm that without the PHY reset, networking doesn't work on arndale. I now see someone else has the same problem, adding Charles to CC. http://www.spinics.net/lists/linux-usb/msg116656.html > Reverting this > breaks ethtool support in turn. Fixing a bug (ethtool support) must not cause breakage elsewhere (in this case on arndale). This is now a regression of functionality from 3.17. I think it would better to revert the change now and with less hurry introduce a ethtool fix that doesn't break arndale. > Kind regards, > > Michel Stam > > -----Original Message----- > From: Riku Voipio [mailto:riku.voipio@xxxxxx] > Sent: Tuesday, November 04, 2014 8:23 AM > To: davem@xxxxxxxxxxxxx; Stam, Michel [FINT] > Cc: linux-usb@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; linux-samsung-soc@xxxxxxxxxxxxxxx > Subject: "asix: Don't reset PHY on if_up for ASIX 88772" breaks net on > arndale platform > > Hi, > > With 3.18-rc3, asix on arndale (samsung exynos 5250 based board), fails > to work. Interface is initialized but network traffic seem not to pass > through. With kernel IP config the result looks like: > > [ 3.323275] usb 3-3.2.4: new high-speed USB device number 4 using > exynos-ehci > [ 3.419151] usb 3-3.2.4: New USB device found, idVendor=0b95, > idProduct=772a > [ 3.424735] usb 3-3.2.4: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [ 3.432196] usb 3-3.2.4: Product: AX88772 > [ 3.436279] usb 3-3.2.4: Manufacturer: ASIX Elec. Corp. > [ 3.441486] usb 3-3.2.4: SerialNumber: 000001 > [ 3.447530] asix 3-3.2.4:1.0 (unnamed net_device) (uninitialized): > invalid hw address, using random > [ 3.764352] asix 3-3.2.4:1.0 eth0: register 'asix' at > usb-12110000.usb-3.2.4, ASIX AX88772 USB 2.0 Ethernet, de:a2:66:bf:ca:4f > [ 4.488773] asix 3-3.2.4:1.0 eth0: link down > [ 5.690025] asix 3-3.2.4:1.0 eth0: link up, 100Mbps, full-duplex, lpa > 0xC5E1 > [ 5.712947] Sending DHCP requests ...... timed out! > [ 83.165303] IP-Config: Retrying forever (NFS root)... > [ 83.170397] asix 3-3.2.4:1.0 eth0: link up, 100Mbps, full-duplex, lpa > 0xC5E1 > [ 83.192944] Sending DHCP requests ..... > > Similar results also with dhclient. Git bisect identified the breaking > commit as: > > commit 3cc81d85ee01e5a0b7ea2f4190e2ed1165f53c31 > Author: Michel Stam <m.stam@xxxxxxxx> > Date: Thu Oct 2 10:22:02 2014 +0200 > > asix: Don't reset PHY on if_up for ASIX 88772 > > Taking 3.18-rc3 and that commit reverted, network works again: > > [ 3.303500] usb 3-3.2.4: new high-speed USB device number 4 using > exynos-ehci > [ 3.399375] usb 3-3.2.4: New USB device found, idVendor=0b95, > idProduct=772a > [ 3.404963] usb 3-3.2.4: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [ 3.412424] usb 3-3.2.4: Product: AX88772 > [ 3.416508] usb 3-3.2.4: Manufacturer: ASIX Elec. Corp. > [ 3.421715] usb 3-3.2.4: SerialNumber: 000001 > [ 3.427755] asix 3-3.2.4:1.0 (unnamed net_device) (uninitialized): > invalid hw address, using random > [ 3.744837] asix 3-3.2.4:1.0 eth0: register 'asix' at > usb-12110000.usb-3.2.4, ASIX AX88772 USB 2.0 Ethernet, 12:59:f1:a8:43:90 > [ 7.098998] asix 3-3.2.4:1.0 eth0: link up, 100Mbps, full-duplex, lpa > 0xC5E1 > [ 7.118258] Sending DHCP requests ., OK > [ 9.753259] IP-Config: Got DHCP answer from 192.168.1.1, my address > is 192.168.1.111 > > There might something wrong on the samsung platform code (I understand > the USB on arndale is "funny"), but this is still an regression from > 3.17. > > Riku -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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