On Mon, 10 Dec 2012, Cunningham, Robert wrote: > I believe I have found a critical bug in the smsc75xx driver and would like to know the right way to proceed. > > Problem: > > 1. Environment: > - Multiple hard-wired SMSC LAN7500 devices connected at boot time and never removed (not removable, in my case). > - Tested under the following Ubuntu ARM-based systems: > PandaBoard ES: Linux Panda-216 3.5.0-215-omap4 #22-Ubuntu SMP PREEMPT Mon Nov 19 16:41:38 UTC 2012 armv7l armv7l armv7l GNU/Linux > Variscite OM44 DVK: Linux OM44-134 3.4.0-1487-omap4 #6+var5 SMP PREEMPT Mon Oct 15 19:18:50 IST 2012 armv7l armv7l armv7l GNU/Linux > Custom OM44-based system: Linux OM44-120 3.4.0-1487-omap4 #6+var7 SMP PREEMPT Sun Oct 28 11:51:16 IST 2012 armv7l armv7l armv7l GNU/Linux > > 2. Observations: > - Expected behavior: A random MAC address is assigned at system start. > - Unexpected behavior: Doing "ifconfig ethX down; ifconfig ethX up" always forces a new random MAC address to be assigned. > - Unexpected behavior: All attempts to manually assign a MAC address are consistently overwritten by a subsequent "ifconfig ethX up". > > 3. Desired behavior: > - I would like to be able to assign desired MAC addresses to any number of attached smsc75xx devices that will persist across any number of ifconfig up/down cycles. Didn't you see this email message containing a patch to fix your problem? http://marc.info/?l=linux-usb&m=135482307408299&w=2 Alan Stern -- 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
