On Fri, Dec 02, 2011 at 03:46:28PM -0800, Sarah Sharp wrote: > On Fri, Dec 02, 2011 at 01:52:43PM -0800, Greg Kroah-Hartman wrote: > > From: Andiry Xu <andiry.xu@xxxxxxx> > > > > When system enters suspend, xHCI driver clears command ring by writing zero > > to all the TRBs. However, this also writes zero to the Link TRB, and the ring > > is mangled. This may cause driver accesses wrong memory address and the > > result is unpredicted. > > > > When clear the command ring, keep the last Link TRB intact, only clear its > > cycle bit. This should fix the "command ring full" issue reported by Oliver > > Neukum. > > > > This should be backported to stable kernels as old as 2.6.37, since the > > commit 89821320 "xhci: Fix command ring replay after resume" is merged. > > > > Signed-off-by: Andiry Xu <andiry.xu@xxxxxxx> > > Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> > > Reported-by: Oliver Neukum <oneukum@xxxxxxx> > > I also forgot to Cc stable for this patch. Where is my head this week? No problem, I'll apply it, thanks for letting me know. greg k-h -- 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
