Hello, We have a mips based custom board with ehci controller, which seem to work just fine with some devices like memory sticks, but fails with others like UMTS/HSDPA modems and HUB's. The host controller is not even able to enumerate these devices, and after a few retries gives up. Symptoms include the message "device descriptor read/all, error -71", more detailed kernel log and usbmon sniff are below. Because we suspected hardware issues we cut all USB traces from the PCB and connected a USB host connector only a few mm from the USB pins of the CPU, but still the same results. Any tips on how to proceed on debugging this ? Thank you very much, Log with USB verbose debugging enabled ====================================== ehci_hcd 0000:00:0a.0: irq status 000c FLR PCD hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001803 POWER sig=j CSC CONNECT hub 1-0:1.0: port 1, status 0501, change 0001, 480 Mb/s ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001801 POWER sig=j CONNECT ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001801 POWER sig=j CONNECT ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001801 POWER sig=j CONNECT ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001801 POWER sig=j CONNECT ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001801 POWER sig=j CONNECT hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x501 ehci_hcd 0000:00:0a.0: port 1 reset ehci_hcd 0000:00:0a.0: port 1 high speed ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001005 POWER sig=se0 PE CONNECT usb 1-1: new high speed USB device using ehci_hcd and address 10 ehci_hcd 0000:00:0a.0: submit_async 1 urb 8796c480 ep0out len 64, qtd a7963060 [qh (null)] ehci_hcd 0000:00:0a.0: irq status 800a Async FLR ERR ehci_hcd 0000:00:0a.0: detected XactErr len 0/64 retry 1 ehci_hcd 0000:00:0a.0: irq status 800a Async FLR ERR ehci_hcd 0000:00:0a.0: detected XactErr len 0/64 retry 2 [...] ehci_hcd 0000:00:0a.0: irq status 800a Async FLR ERR ehci_hcd 0000:00:0a.0: detected XactErr len 0/64 retry 31 ehci_hcd 0000:00:0a.0: irq status 800a Async FLR ERR ehci_hcd 0000:00:0a.0: devpath 1 ep0in 3strikes ehci_hcd 0000:00:0a.0: dev0 ep0in qtd token 80400148 --> status -71 ehci_hcd 0000:00:0a.0: ehci_urb_done 1 urb 8796c480 ep0in status -71 len 0/64 ehci_hcd 0000:00:0a.0: irq status 8028 Async IAA FLR ehci_hcd 0000:00:0a.0: port 1 reset ehci_hcd 0000:00:0a.0: port 1 high speed ehci_hcd 0000:00:0a.0: GetStatus port 1 status 001005 POWER sig=se0 PE CONNECT ehci_hcd 0000:00:0a.0: submit_async 1 urb 879f9880 ep0out len 0, qtd a7963120 [qh a7962080] ehci_hcd 0000:00:0a.0: irq status 8009 Async FLR INT ehci_hcd 0000:00:0a.0: ehci_urb_done 1 urb 879f9880 ep0out status 0 len 0/0 ehci_hcd 0000:00:0a.0: irq status 8028 Async IAA FLR ehci_hcd 0000:00:0a.0: submit_async 1 urb 8796c480 ep0out len 18, qtd a7963120 [qh (null)] ehci_hcd 0000:00:0a.0: irq status 800a Async FLR ERR ehci_hcd 0000:00:0a.0: detected XactErr len 0/18 retry 1 ehci_hcd 0000:00:0a.0: irq status 800a Async FLR ERR ehci_hcd 0000:00:0a.0: detected XactErr len 0/18 retry 2 ehci_hcd 0000:00:0a.0: irq status 800a Async FLR ERR usbmon sniff ============ 87920180 636779336 C Ii:1:001:1 0:2048 1 D 87920180 636779426 S Ii:1:001:1 -150:2048 4 < 879f6680 636784580 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6680 636791756 C Ci:1:001:0 0 4 = 01050100 879f6680 636792810 S Co:1:001:0 s 23 01 0010 0001 0000 0 879f6680 636792831 C Co:1:001:0 0 0 879f6680 636798552 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6680 636805358 C Ci:1:001:0 0 4 = 01050000 879f6680 636831297 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6680 636838085 C Ci:1:001:0 0 4 = 01050000 879f6680 636864102 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6680 636870888 C Ci:1:001:0 0 4 = 01050000 879f6600 636897248 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6600 636904045 C Ci:1:001:0 0 4 = 01050000 879f6680 636930147 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6680 636936936 C Ci:1:001:0 0 4 = 01050000 879f6680 636944099 S Co:1:001:0 s 23 03 0004 0001 0000 0 879f6680 636947426 C Co:1:001:0 0 0 879f6600 636998209 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6600 637009294 C Ci:1:001:0 0 4 = 03051000 879f6680 637060128 S Co:1:001:0 s 23 01 0014 0001 0000 0 879f6680 637060148 C Co:1:001:0 0 0 879f6680 637066525 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < 879f6680 637413797 C Ci:1:000:0 -71 0 879f6680 637420468 S Co:1:001:0 s 23 03 0004 0001 0000 0 879f6680 637423811 C Co:1:001:0 0 0 879f6680 637474185 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < 879f6680 637485216 C Ci:1:001:0 0 4 = 03051000 879f6680 637536132 S Co:1:001:0 s 23 01 0014 0001 0000 0 879f6680 637536153 C Co:1:001:0 0 0 -- :wq ^X^Cy^K^X^C^C^C^C -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
