Hi! > > - e1efa87241272104d6a12c8b9fcdc4f62634d447 > > Yep, a sync of the dma descriptors before the hardware gets ownership of the tx tail > idx is missing in the stmmac, too. Thanks for the hint. Actually, the driver uses smp_wmb() which is completely crazy, and probably misses rmb() in clean_tx, too. Anyway, I did not notice there are dma_ variants, too... we clearly need them. Thanks and best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html