Matthieu >-----Original Message----- >From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb-owner@xxxxxxxxxxxxxxx] On Behalf Of matthieu >castet >Sent: Wednesday, December 23, 2009 2:11 PM >To: linux-usb@xxxxxxxxxxxxxxx >Cc: Alan Stern >Subject: [RFC] gadget ethernet dma align fix > >Hi, > >I attach a patch that should allow to use gadget ethernet with driver >not supporting dma on unaligned address. > >This is untested on real hardware. Gave a first round of test on real hardware. 1) patch did not compile a) missing ; b) a typecast was needed like: ((unsigned long)skb->data & 3) c) WARN_ON() getting hit multiple times, thereby generating un-managable amount of logs: so disable WARN_ON() The result is attached patch (usb-align-v2.patch) 2) After these changes, I can see that: Ping from host side works fine Ping from device side hangs So looks like the problem is not solved yet. Will debug further tomorrow. > > >Merry Christmas > > >Matthieu
Attachment:
usb-align-v2.patch
Description: usb-align-v2.patch
