Messages in this thread | | | Subject | Re: [PATCH] usb-gadget-ether: Prevent oops caused by error interrupt race -V2 (comments update) | From | Thomas Gleixner <> | Date | Sat, 22 Sep 2007 21:30:40 +0200 |
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On Sat, 2007-09-22 at 12:18 -0700, David Brownell wrote: > I think you misread my comment. Those requests are **NOT** pending!! > So this update has a *MORE* incorrect description of the issue. > > That's just the freelist ... it's a fairly conventional model whereby > there's a pool of "free" request slots which can be issued. When the > pool empties, the TX queue shuts down until one of the requests which > is pending in the hardware completes, and makes a slot free. > > The problem you're addressing is that there's a small window where a > disconnect IRQ can shut down the TX queue (and empty that freelist) > after upper layers in the network stack started a transmission on > an active (pre-disconnect) TX queue. > > That problem is *NOT* related to any pending requests at all!!
Sorry, I misunderstood your comment. Can you please add the correct comment yourself before we play some more rounds of ping pong ?
tglx
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