On Thu, 15 Nov 2007, Greg KH wrote:
> On Thu, Nov 15, 2007 at 08:11:30AM -0800, Linus Torvalds wrote: > > > > > > patch 7fb7ac241162dc51ec0f7644d4a97b2855213c32 in mainline. > > > > This one is getting reverted in mainline in about five minutes (unless I > > find an email from Stephen to address the reported regression - I haven't > > gone through all my emails yet), so I don't think it should make it into > > stable. > > Thanks for letting me know which patch is causing the problem, I just > got another report of the skge driver not working with all of these > patches applied. I suspect that's the same report. > It looks like I'll just drop this one from the patch list, unless > Stephen has a better idea. This is my commit message for the revert - note the suggested possible fix (but also why I didn't apply it, and why things got reverted). Linus --- commit 279e1dab949d33737557babfe9f74e0b74fbe39a Author: Linus Torvalds <[EMAIL PROTECTED]> Date: Thu Nov 15 08:44:36 2007 -0800 Revert "skge: fix ram buffer size calculation" This reverts commit 7fb7ac241162dc51ec0f7644d4a97b2855213c32. Heikki Orsila reports that it causes a regression: "Doing nc host port < /dev/zero on a sending machine (not skge) to an skge machine that is receiving: nc -l -p port >/dev/null with ~60 MiB/s speed, causes the interface go malfunct. A slow transfer doesn't cause a problem." See http://bugzilla.kernel.org/show_bug.cgi?id=9321 for some more information. There is a workaround (also reported by Heikki): "After some fiddling, I noticed that not changing the register write order on patch: + skge_write32(hw, RB_ADDR(q, RB_END), end); skge_write32(hw, RB_ADDR(q, RB_WP), start); skge_write32(hw, RB_ADDR(q, RB_RP), start); - skge_write32(hw, RB_ADDR(q, RB_END), end); fixes the visible effect.. Possibly not the root cause of the problem, but changing the order back fixes networking here." but that has yet to be ack'ed or tested more widely, so the whole problem-causing commit gets reverted until this is resolved properly. Bisected-and-requested-by: Heikki Orsila <[EMAIL PROTECTED]> Cc: Stephen Hemminger <[EMAIL PROTECTED]> Cc: Jeff Garzik <[EMAIL PROTECTED]> Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> drivers/net/skge.c | 51 +++++++++++++++++++++++++++------------------------ 1 files changed, 27 insertions(+), 24 deletions(-) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/