> -----Original Message----- > From: Alan Stern [mailto:stern@xxxxxxxxxxxxxxxxxxx] > Sent: Monday, December 10, 2012 8:32 AM > To: Cunningham, Robert > Cc: Dan Williams; linux-usb@xxxxxxxxxxxxxxx > Subject: Re: BUG: smsc75xx driver assigns random MAC address at every init, > not just at boot. > > 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 Thank-you very, very much for the link. Blasted corporate email filters munched the post with the patch. I assumed I had failed to ask my question in a well-focused manner. I'll monitor future threads online, just to be sure. Assuming I come back with an "It works!" report, is there anything I can to do help push this patch into the mainline? (It will be a little while for that report: I'm building on a self-hosted embedded system with only an SD card for storage.) Thanks again, -BobC -- 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
