On 03/04/15 12:34, Greg KH wrote: > On Wed, Mar 04, 2015 at 12:14:01PM -0500, Rick Farina wrote: >> Recently the Huawei e3276 devices my company was buying came with a new >> firmware version and the word "hilink" printed all over them. Instead >> of showing up as a usbserial device using the option driver, they show >> up now as an ethernet device. While I can see the convenience factor in >> this, it doesn't serve our purpose, so some quick googling showed me I >> can enable the serial again with usb_modeswitch and this line: >> >> 55534243123456780000000000000011062000000000000200000000000000 >> >> When I do this, the usbid changes to 12d1:1566 and using the option >> driver works properly with the device. The problem I have, is that we >> are currently using kernel 3.18 and it doesn't have that usbid for my >> device. Things work properly when I run this: >> >> echo "12d1 1566" > /sys/bus/usb-serial/drivers/option1/new_id >> >> My problem is, I was hoping to find a better way to handle this than >> having to run a script to do this at boot. I tried adding the vendor >> and product to usbserial using /etc/modprobe.d, however, this causes it >> to use the usbserial generic module instead of the option module and >> doesn't work. > > No, use the option driver. > >> Can anyone assist me in finding a proper solution instead of echoing to >> new_id on boot? > > Make a patch to the driver, as you mention below :) > >> Additionally, it would be nice to officially add this id to the option >> driver, it looks like it's not present at this time: >> >> https://git.kernel.org/cgit/linux/kernel/git/gregkh/usb.git/tree/drivers/usb/serial/option.c >> >> I can submit a patch to add it if desired, but right now it would be >> super helpful if I can make this work without a kernel patch. > > A patch would be great, that way you get the fix for all future > releases, and we can backport it to all stable kernel releases. I'm happy to do this, but a fix for systems without upgraded kernels would be helpful. Currently I can hack at it through the modprobe.d install command, or a udev rule. If anyone else has a good idea I'd love to hear it, otherwise once I get it working I'll submit a patch so others don't need such ugly hacks. Thanks, Zero > > thanks, > > greg k-h > -- 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
