On Fri, Jan 11, 2002 at 01:09:03PM +0000, Alan Cox wrote:
> > The serial driver (old or new) open/close functions are one of the worst
> > offenders of the global-cli-and-hold-kernel-lock-and-schedule problem.
> > I'm currently working on fixing this in the new serial driver.
>
> Someone fixed serial.c to use spinlocks a long while ago. Its just not
> merged
Unfortunately it wasn't a simple "replace global irq with spinlocks" - some
code also got moved around so its not clear that the problem was fixed by
the spinlocks or the code reordering. I'd rather know which it was.
In addition, holding a spinlock while calling request_irq is asking for
trouble.
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
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This archive was generated by hypermail 2b29 : Tue Jan 15 2002 - 21:00:35 EST