On Thu, Oct 24, 2019 at 12:43:17PM +0200, Sebastian Andrzej Siewior wrote: > On 2019-10-23 10:06:40 [+0200], Daniel Wagner wrote: > > Since this does not improve the situation as a whole it might be best to > remove the code as suggested by Daniel. I have tried to fix the above issue. It looks like the interrupt handler doesn't work at all. Below is the log with all debug prints enabled. I just see one PHY interrupt. Don't know if that is okay or not. [ 3.719647] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): deferred multicast write 0x00007ca0 [ 3.861125] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): No External EEPROM. Setting MAC Speed [ 3.872500] libphy: lan78xx-mdiobus: probed [ 3.883927] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): registered mdiobus bus usb-001:004 [ 3.893600] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): phydev->irq = 79 [ 4.274367] random: crng init done [ 4.929478] lan78xx 1-1.1.1:1.0 eth0: receive multicast hash filter [ 4.935922] lan78xx 1-1.1.1:1.0 eth0: deferred multicast write 0x00007ca2 [ 6.537962] lan78xx 1-1.1.1:1.0 eth0: PHY INTR: 0x00020000 [ 6.549129] lan78xx 1-1.1.1:1.0 eth0: speed: 1000 duplex: 1 anadv: 0x05e1 anlpa: 0xc1e1 [ 6.557293] lan78xx 1-1.1.1:1.0 eth0: rx pause disabled, tx pause disabled [ 6.572581] Sending DHCP requests ..., OK [ 12.200693] IP-Config: Got DHCP answer from 192.168.19.2, my address is 192.168.19.53 [ 12.208654] IP-Config: Complete: [ 12.211929] device=eth0, hwaddr=b8:27:eb:85:c7:c9, ipaddr=192.168.19.53, mask=255.255.255.0, gw=192.168.19.1 [ 12.222350] host=192.168.19.53, domain=, nis-domain=(none) [ 12.228364] bootserver=192.168.19.2, rootserver=192.168.19.2, rootpath= [ 12.228369] nameserver0=192.168.19.2 [ 12.239812] ALSA device list: [ 12.242839] No soundcards found. [ 12.256896] VFS: Mounted root (nfs filesystem) on device 0:19. [ 12.263501] devtmpfs: mounted [ 12.273037] Freeing unused kernel memory: 5504K [ 12.277769] Run /sbin/init as init process and after this the NFS timeouts appear. I tried to figure out how the PHY works [1] and played a bit around with fiddling with a few bits in the registers. But now success at all. I agree with Sebastian, with the revert the driver works at least. Thanks, Daniel [1] http://ww1.microchip.com/downloads/en/DeviceDoc/LAN7800-Data-Sheet-DS00001992G.pdf
