I've configured, built, and installed kernel 2.6.0-test8 (with one non-USB
patch to make test8 compile). I then followed the hints at
http://thomer.com/linux/migrate-to-2.6.html to get hotplugging to work, which
it seems to do for both a Sanyo Xacti-S1 camera and a Canon PowerShot A80
camera. But it doesn't seem to work/detect a developer board I'm playing
with. Said board, which is supposed to emulate a digital still camera, _does_
communicate correctly with a Canon i455 printer, and I'm using the same
cables. dmesg output below, starting about when I plugged in the device.
I have USB debug messages enabled in my kernel build, and USB is all as
modules. The "Stalled Babble" message clearly comes from uhci-debug.c:60, which
in turn comes from uhci-hcd.c/uhci_result_control():1068, but I haven't traced
it back further than that.
I'm willing to grub about a bit, but I'm also looking for suggestions on just
where and how to look.
Thanks,
-Del
$ dmesg
hub 1-0:1.0: port 2 enable change, status 100
drivers/usb/host/uhci-hcd.c: 1060: suspend_hc
drivers/usb/host/uhci-hcd.c: 1060: wakeup_hc
hub 1-0:1.0: port 2, status 101, change 1, 12 Mb/s
hub 1-0:1.0: debounce: port 2: delay 100ms stable 4 status 0x101
hub 1-0:1.0: new USB device on port 2, assigned address 12
drivers/usb/host/uhci-hcd.c: uhci_result_control() failed with status 500000
[c0c4a240] link (00c4a1e2) element (00a1a080)
Element != First TD
0: [c0a1a040] link (00a1a080) e3 Length=7 MaxLen=7 DT0 EndPt=0 Dev=c,
PID=2d(SETUP) (buf=0e169680)
1: [c0a1a080] link (00a1a0c0) e3 SPD Stalled Babble Length=7 MaxLen=7 DT1 EndPt=0
Dev=c, PID=69(IN) (buf=0e1693c0)
2: [c0a1a0c0] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0
Dev=c, PID=e1(OUT) (buf=00000000)
drivers/usb/host/uhci-hcd.c: uhci_result_control() failed with status 500000
[c0c4a270] link (00c4a1e2) element (00a1a140)
Element != First TD
0: [c0a1a100] link (00a1a140) e3 Length=7 MaxLen=7 DT0 EndPt=0 Dev=c,
PID=2d(SETUP) (buf=0e169680)
1: [c0a1a140] link (00a1a180) e3 SPD Stalled Babble Length=7 MaxLen=7 DT1 EndPt=0
Dev=c, PID=69(IN) (buf=0e1693c0)
2: [c0a1a180] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0
Dev=c, PID=e1(OUT) (buf=00000000)
drivers/usb/host/uhci-hcd.c: uhci_result_control() failed with status 500000
[c0c4a240] link (00c4a1e2) element (00a1a080)
Element != First TD
0: [c0a1a040] link (00a1a080) e3 Length=7 MaxLen=7 DT0 EndPt=0 Dev=c,
PID=2d(SETUP) (buf=0e169680)
1: [c0a1a080] link (00a1a0c0) e3 SPD Stalled Babble Length=7 MaxLen=7 DT1 EndPt=0
Dev=c, PID=69(IN) (buf=0e1693c0)
2: [c0a1a0c0] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0
Dev=c, PID=e1(OUT) (buf=00000000)
drivers/usb/host/uhci-hcd.c: uhci_result_control() failed with status 500000
[c0c4a270] link (00c4a1e2) element (00a1a140)
Element != First TD
0: [c0a1a100] link (00a1a140) e3 Length=7 MaxLen=7 DT0 EndPt=0 Dev=c,
PID=2d(SETUP) (buf=0e169680)
1: [c0a1a140] link (00a1a180) e3 SPD Stalled Babble Length=7 MaxLen=7 DT1 EndPt=0
Dev=c, PID=69(IN) (buf=0e1693c0)
2: [c0a1a180] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0
Dev=c, PID=e1(OUT) (buf=00000000)
drivers/usb/host/uhci-hcd.c: uhci_result_control() failed with status 500000
[c0c4a240] link (00c4a1e2) element (00a1a080)
Element != First TD
0: [c0a1a040] link (00a1a080) e3 Length=7 MaxLen=7 DT0 EndPt=0 Dev=c,
PID=2d(SETUP) (buf=0e169680)
1: [c0a1a080] link (00a1a0c0) e3 SPD Stalled Babble Length=7 MaxLen=7 DT1 EndPt=0
Dev=c, PID=69(IN) (buf=0e1693c0)
2: [c0a1a0c0] link (00000001) e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0
Dev=c, PID=e1(OUT) (buf=00000000)
drivers/usb/core/config.c: unable to get descriptor
usb 1-2: can't read configurations, error -75
hub 1-0:1.0: new USB device on port 2, assigned address 13
usb 1-2: control timeout on ep0out
usb 1-2: control timeout on ep0out
usb 1-2: device not accepting address 13, error -110
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