Re: [PATCH] make ps2 mouse work ...
From: Andrew Morton
Date: Tue Jun 15 2004 - 22:58:49 EST
Jun Sun <jsun@xxxxxxxxxx> wrote:
>
>
> I found this problem on a MIPS machine. The problem is
> likely to happen on other register-rich RISC arches too.
>
> cmdcnt needs to be volatile since it is modified by
> irq routine and read by normal process context.
volatile is not the preferred way to fix this up. This points at either a
locking error in the psmouse driver or a missing "memory" thingy in the
mips port somewhere.
Please describe the bug which led to this patch. Where was it getting stuck?
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