Using a Sierra Wireless Compass 888 on an Embedded ARM platform. Kernel Version: 2.6.25.7 Sierra Driver: v.1.6.0 Host controller: Oxford-Semi using driver oxu210hp-hcd.c Driver works fine on x86 and has been tested by Sierra Wireless on an ARM platform. So this problem is platform specific. Previous suggestions from this forum has suggested the problem may be with the host controller? The error manifests itself after I have insmod'd usbserial.ko and sierra.ko, inserted the modem and then send a command to the modem, for example: 'echo 'AT' > /dev/ttyUSB3'. The kernel reports the following: "sierra ttyUSB3: sierra_open: submit urb 1 failed (-12) 4096 sierra ttyUSB3: sierra_open: submit urb 2 failed (-12) 4096 sierra ttyUSB3: sierra_open: submit urb 3 failed (-12) 4096 sierra ttyUSB3: sierra_open: submit urb 4 failed (-12) 4096 sierra ttyUSB3: sierra_open: submit urb 5 failed (-12) 4096 sierra ttyUSB3: sierra_open: submit urb 6 failed (-12) 4096 sierra ttyUSB3: sierra_open: submit urb 7 failed (-12) 4096 sierra ttyUSB3: sierra_open: submit irq_in urb failed -12 sierra ttyUSB3: sierra_write - usb_submit_urb(write bulk) failed with status = - 12 -bash: echo: write error: Cannot allocate memory" On investigation I can trace the failure through as follows: 1) sierra.c[]::sierra_open() calls hcd.c::usb_submit_urb() at line 729 2) hcd.c::usb_submit_urb() calls oxu210hp-hcd.c::__oxu_urb_enqueue() at line 1325 3) oxu210hp-hcd.c::__oxu_urb_enqueue() calls oxu210hp-hcd.c::qh_urb_transaction () at line 2845 and returns (-ENOMEM) 4) oxu210hp-hcd.c::qh_urb_transaction() returns NULL at line 1358 but does not goto cleanup. Can not debug at this point so progress is slow using printk :( Any ideas why oxu210hp-hcd.c::qh_urb_transaction() returns NULL when oxu210hp- hcd.c::__oxu_urb_enqueue() is expecting it to return not zero to return successfully itself? All help appreciated. :) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
