On Tue, 2004-09-28 at 11:29 -0400, Alan Stern wrote: > On Tue, 28 Sep 2004, David Woodhouse wrote: > > > I don't understand why modem_run works but two entirely separate > > reimplementations of exactly the same thing in the kernel don't work. > > What are we doing differently? > > You could try using the "usbfs_snoop=true" module parameter to check and > see what's actually being sent from the userspace program.
It appears to confirm my belief that the userspace program is doing _precisely_ what both Duncan's and my kernel versions do.... nothing but the bulk transfer. I've already triple-checked the endpoints and the data. We show a CRC on the data and print the length. I've even done a hex dump of the start and end of the data in my paranoia. It does claim the interface first but I believe that doesn't actually _do_ anything to the device -- and it didn't make any difference when I did that from the kernel driver anyway. modem_run[4477]: modem_run version 1.3.1 started by dwmw2 uid 0 modem_run[4477]: Found SpeedTouch USB modem modem_run[4477]: Assuming modem revision: 4 kernel: usb 3-1: usbdev_ioctl: CLAIMINTERFACE modem_run[4477]: Best offset 32 with probability 100% modem_run[4477]: Best offset 927 with probability 100% modem_run[4477]: Firmware info (CRC:0x69636579, Size:935, Checked: Yes, Alcatel/Thomson Boot block (new)) modem_run[4477]: Firmware info (CRC:0x41d4143c, Size:775545, Checked: Yes, 0.0.0 - testing firmware from Thomson) kernel: usb 3-1: usbdev_ioctl: BULK modem_run[4477]: BLOCK1 : 935 bytes uploaded : OK modem_run[4477]: Downloaded in 4.758000 ms kernel: usb 3-1: usbdev_ioctl: BULK modem_run[4477]: BLOCK2 : 511 bytes downloaded : OK modem_run[4477]: Downloaded in 170.845000 ms I'm beginning to wonder if it's purely timing-related. But it doesn't matter how long I leave it between connecting the modem and running the userspace program -- and it doesn't work if I connect the modem then wait a while before loading the kernel module either. -ECONNFUSED -- dwmw2 ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
