From: Brad Sawatzky Fixes a bug/inconsistency revealed by the additional sanity checking in commit 063a2da8f01806906f7d7b1a1424b9afddebc443 introduced in the original 2.6.24 branch. The Handspring Visor / PalmOS 4 device structure defines .num_bulk_out=2 but the usb-serial probe returns num_bulk_out=3, triggering the check in the above commit and forcing a bail out when the device (a Garmin iQue in my case) attempts to connect. The patch bumps the expected number of endpoints to 3. I suppose it's possible that the kernel is identifying 3 bulk endpoints when there should only be 2 and there is some issue with the lower level endpoint probe? FWIW, this patch will probably solve the following kernel bug report for Treo users (identical symptoms, different model PalmOS units): Signed-off-by: Brad Sawatzky Signed-off-by: Andrew Morton --- drivers/usb/serial/visor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN drivers/usb/serial/visor.c~usb-serial-fix-regression-in-visor-palm-os-module-for-kernels-=-2624 drivers/usb/serial/visor.c --- a/drivers/usb/serial/visor.c~usb-serial-fix-regression-in-visor-palm-os-module-for-kernels-=-2624 +++ a/drivers/usb/serial/visor.c @@ -191,7 +191,7 @@ static struct usb_serial_driver handspri .id_table = id_table, .num_interrupt_in = NUM_DONT_CARE, .num_bulk_in = 2, - .num_bulk_out = 2, + .num_bulk_out = 3, .num_ports = 2, .open = visor_open, .close = visor_close, _