Hello to all magician-USB-list,
I use the internal modem of an iBook in a leased-line-application, which
works fine. My accessing kext, which implements a kind of SLIP-protocoll, use the
traditional open/close/read/write/ioctl interfaces for the internal modem by
looking up the cdevsw switch table.
The Information of email@hidden, Topic: block/char devices in the
dawrin-developer list from 2003/03/27 says: legal, but not officially supported
and I will change in the future to I/O Kit.
These errors are listed after several days to weeks in system.log, my kext
got no errors in read/write/ioctl and the connection failed forever. There are
definitely no sleep/wake cycles. If the connection is lost,
1 - I will drop DTR
2 - after 5 seconds I reassign DTR
3 - Modem-initial-Sequence
4 - ATA
Oct 11 10:02:01 zzps mach_kernel: USBF: 434405.623
AppleUSBOHCI[0x24d5000]::CreateGeneralTransfer - trying to queue to a stalled
pipe
Oct 11 10:02:01 zzps mach_kernel: USBF: 434405.623 ControlTransaction:
control packet 1 error 0xe000404f
Oct 11 10:02:11 zzps mach_kernel: psn: 0 ATA
Oct 11 10:03:07 zzps mach_kernel: NO CARRIER
Oct 11 10:03:08 zzps mach_kernel: psn: 0 Modemstatus: 00000020
Oct 11 10:03:15 zzps mach_kernel: USBF: 434479.626
AppleUSBOHCI[0x24d5000]::CreateGeneralTransfer - trying to queue to a stalled pipe
Oct 11 10:03:15 zzps mach_kernel: USBF: 434479.626 ControlTransaction:
control packet 1 error 0xe000404f
and so on.
Has anybody any ideas?
Thanks.
Harald/CreaTroniC
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