Messages in this thread | | | Date | Tue, 15 Jun 2004 20:56:11 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] make ps2 mouse work ... |
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Jun Sun <jsun@mvista.com> 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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