On Thu, Mar 1, 2012 at 3:18 PM, Manavendra Nath Manav <mnm.kernel@xxxxxxxxx> wrote: > On Thu, Mar 1, 2012 at 1:57 PM, Stefan Dreyer > <stefan.dreyer@xxxxxxxxxxxxxxxx> wrote: >> Hi, >> >> allthough the answer is offtopic for cdc-acm-driver, i will answer, because >> maybe it helps other people in future. > >> I can tell you exactly, what is going on. If the scanner switches to >> ProductId=0720 (0c2e:0720) the scanner is working in Serial-Mode. If you >> want the scanner let work as serial device, you have to use the driver >> metro-usb. The manufacturer has this driver, but that one is outdatet and >> doesn't compile on actual Linux kernel. >> I found an actual driver, which compiles even with kernel 3.2 >> <https://gitorious.org/other/metro-usb/commits/master> > > Thanks a lot for the prompt reply, this should adequately solve my > problem. I am able to download the driver source and compile. However, > I have run into a trivial module format error. > > [root@pe1800xs serial]# modinfo metro-usb.ko > filename: metro-usb.ko > description: Metrologic Instruments Inc. - USB-POS driver > author: Aleksey Babahin <tamerlan311@xxxxxxxxx> > author: Philip Nicastro > license: GPL > srcversion: AF4C7DDE2804EBB1578A05F > alias: usb:v0C2Ep0710d*dc*dsc*dp*ic*isc*ip* > alias: usb:v0C2Ep0720d*dc*dsc*dp*ic*isc*ip* > depends: usbserial > vermagic: 2.6.35.6-45.fc14.i686 SMP mod_unload modversions 686 > parm: debug:Print debug info (bool 1=on, 0=off) (bool) > parm: vendor:User specified vendor ID (ushort) (ushort) > parm: product:User specified product ID (ushort) (ushort) > > [root@pe1800xs serial]# modprobe -f -v metro-usb > insmod /lib/modules/2.6.35.6-45.fc14.i686/kernel/drivers/usb/serial/metro-usb.ko > FATAL: Error inserting metro_usb > (/lib/modules/2.6.35.6-45.fc14.i686/kernel/drivers/usb/serial/metro-usb.ko): > Invalid module format > > [root@pe1800xs serial]# uname -a > Linux pe1800xs 2.6.35.6-45.fc14.i686 #1 SMP Mon Oct 18 23:56:17 UTC > 2010 i686 i686 i386 GNU/Linux > > [root@pe1800xs serial]# dmesg > [84119.755750] metro_usb: version magic '2.6.35.6-45.fc14.i686 SMP > mod_unload modversions 686 ' should be '2.6.35.6-45.fc14.i686 SMP > mod_unload 686 ' > > I am running Fedora14 with "Force module loading option disabled". How > can I turn it ON without recompiling the kernel. Or, since I have the > souce files of the driver (attached), how can I modify the metro-usb.c > file to provide suitable "module version". > I am able to load the metro-usb.ko module now and the scanner works perfectly. I opened the serial console using bash# serial /dev/ttyUSB0 9600 and can see the 1D and 2D scanned barcodes. Thanks :) [89073.533413] metro-usb 7-1:1.0: Metrologic USB to serial converter. converter detected [89073.533489] usb 7-1: Metrologic USB to serial converter. converter now attached to ttyUSB0 The workaround I did to remove "invalid module format" error is that I modified the vermagic.h file. [root@pe1800xs e518816]# diff /usr/src/kernels/2.6.35.6-45.fc14.i686/include/linux/vermagic.h.old /usr/src/kernels/2.6.35.6-45.fc14.i686/include/linux/vermagic.h.new 32,33c32 < MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS \ < MODULE_ARCH_VERMAGIC --- > MODULE_VERMAGIC_MODULE_UNLOAD MODULE_ARCH_VERMAGIC Is this the correct way to resolve the error, although it works for me? I am sure there would be other better ways to resolve vermagic conflict errors. -- Manavendra Nath Manav -- 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
