Re: [PATCH] sungem rework & wake on lan
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2004-11-26 22:03:56
On Fri, 2004-11-26 at 20:07 +0100, Colin Leroy wrote:
On 26 Nov 2004 at 14h11, Benjamin Herrenschmidt wrote: Hi Ben, if (found_mii_phy(gp) && gp->phy_mii.def->ops->suspend) - gp->phy_mii.def->ops->suspend(&gp->phy_mii, 0 /* wake on lan options */); + gp->phy_mii.def->ops->suspend(&gp->phy_mii); Shouldn't this if() have an "&& !wol" clause ? At least it doesn't work without it, and works with it, here on 5221 PHY. Thanks for your work. Will post a patch applying to 2.6.9+sleep_patch soon for the possibly interested people.
You are right. It happens to work in both case with the 5201 I have here, but that may be because the superisolate code doesn't quite work on it ... Anyway, I do _not_ intend to keep the driver in this state. I dislike the fact that I have to udelay() between 10 and 100usec (depending on the machine) at IRQ time with a spinlock held every second when polling for the link. I will move the link poll to task level so it can schedule instead. But the problem is complex. There is a problem with kenrel autoconfig (ipconfig) which doesn't schedule and should probably be fixed. Also to do what I want to do (which is to also switch the clock off when the iface is up, but the link down), I'll have locking issues with set_mtu() and set_multicast() calls which happen to be called with a spinlock held. Ben.