Messages in this thread | | | Date | Thu, 9 Sep 1999 11:50:28 -0400 (EDT) | From | Stephen Frost <> | Subject | Re: BusLogic + SMP == broke |
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On Wed, 8 Sep 1999, Brian Macy wrote:
> Stephen Frost wrote: > > > > Get any funny kernel errors on the screen when these locks happened? > > I've got a BT958D in an SMP machine, and basically every day, damn near EVERY > > day, it'll lock on me w/ a message bitching about a scsi error or something, > > I'd have to go look it up again... > > Not so lucky... what happens nearly every time: > - Do a preview scan (xsane, net SANE, or xscanimage) > - Do a scan at 300dpi > - Stops part way into the scan and the app doing the scanning locks > - About 30seconds later the entire machine locks solid, no message, no > anything
Interesting, I had it lock solid on me this morning w/ nothing on the screen, though usually it has something, it's just 2 lines of not very usefull something.
> >From looking at the driver, it isn't doing proper locking. The only > thing using spinlocks is the ISR itself... which is of little use since > the other side of the command queue'ing isn't locked. There are stubs > for non-ISR locks but the function are NOPs. If you do make the > functions call spinlocks the driver locks up on detection (my guess is > deadlocking on the spinlock). I'm not sure this is the real problem as > I'd expect kernel oops over poor resource contention. > > I figured I'd take Doug's suggestion and look at the aic7xxx driver and > see if I can figure out how I can use it as a model to rewrite the > BusLogic driver... or I may look at the new Mylex DAC960 driver since it > uses a similar model but appears to at least attempt to use proper > locking. Driver writing is pretty new to me so I may just break-down, > give up, and get a new card. > > BTW you wouldn't happen to have a Tyan motherboard would you?
Nope, this is an Abit BP6...
Stephen
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