The ipaq USB driver in 2.6.0 didn't work for me. I got the attached "Badness in local_bh_enable" backtrace when ppp tried to connect to my iPaq. The quick and dirty patch to avoid the problem is this patch:
===== drivers/usb/serial/ipaq.c 1.34 vs edited ===== --- 1.34/drivers/usb/serial/ipaq.c Tue Sep 16 03:52:04 2003 +++ edited/drivers/usb/serial/ipaq.c Fri Dec 19 17:28:20 2003 @@ -222,7 +222,11 @@ * discipline instead of queueing. */ +#if 0 port->tty->low_latency = 1; +#else + port->tty->low_latency = 0; +#endif port->tty->raw = 1; port->tty->real_raw = 1; I'm not quite sure of the root-cause of the problem. It's quite likely that the console output caused by WARN_ON() in softirq.c slows down execution enough for the connection to fail, but clearly calling local_bh_enable() with interrupts disabled isn't kosher either. With the above workaround applied, I can now use SynCE's "pstatus" and "pls" commands and they both seem to work fine. Thanks, --david Badness in local_bh_enable at kernel/softirq.c:121 Call Trace: [<a00000010001bee0>] show_stack+0x80/0xa0 [<a0000001000a1870>] local_bh_enable+0x150/0x160 [<a0000002001f7070>] ppp_asynctty_receive+0x670/0x1080 [ppp_async] [<a000000100348460>] flush_to_ldisc+0x140/0x260 [<a0000002001b9080>] ipaq_read_bulk_callback+0x360/0x640 [ipaq] [<a000000100564b50>] usb_hcd_giveback_urb+0x150/0x240 [<a0000002001814a0>] finish_urb+0xe0/0x220 [ohci_hcd] [<a0000002001831c0>] dl_done_list+0x260/0x320 [ohci_hcd] [<a000000200185980>] ohci_irq+0x140/0x960 [ohci_hcd] [<a000000100566ec0>] usb_hcd_irq+0xa0/0x120 [<a000000100018940>] handle_IRQ_event+0xa0/0x140 [<a0000001000195b0>] do_IRQ+0x2b0/0x440 [<a00000010001b050>] ia64_handle_irq+0x70/0x140 [<a000000100014fa0>] ia64_leave_kernel+0x0/0x260 [<a00000010037fb00>] serial_in+0x300/0x400 [<a0000001003858b0>] serial8250_console_write+0xf0/0x720 [<a000000100097b50>] __call_console_drivers+0x130/0x180 [<a000000100098440>] _call_console_drivers+0x1c0/0x1e0 [<a000000100098880>] release_console_sem+0x420/0x580 [<a000000100098ea0>] printk+0x300/0x4e0 [<a0000002001b9cd0>] ipaq_write+0x610/0x700 [ipaq] [<a000000200148f50>] serial_write+0x1d0/0x2e0 [usbserial] [<a0000002001f5d10>] ppp_async_push+0x250/0xd00 [ppp_async] [<a0000002001f69d0>] ppp_async_send+0xd0/0x100 [ppp_async] [<a000000200215ff0>] ppp_push+0x230/0x260 [ppp_generic] [<a000000200216e10>] ppp_xmit_process+0x730/0xe80 [ppp_generic] [<a0000002002184f0>] ppp_write+0x3d0/0x400 [ppp_generic] [<a00000010011b4a0>] vfs_write+0x1c0/0x2e0 [<a00000010011b700>] sys_write+0x60/0xe0 [<a000000100014e20>] ia64_ret_from_syscall+0x0/0x20 ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel