Re: sonypc with Sony Vaio VGN-SZ1VP

[Neil Bird <neil@fnxweb.com>]

Around about 05/01/07 17:19, Len Brown typed ...
> running the AML interpreter in  interrupt context would be a no-no.
> I thought we had deferred the notify handlers so that they wouldn't
> run in interrupt context, but maybe there is a case here where
> that does not happen.

   Yes, I tracked though the kernel acpi code as much as I could, and found 
that I was making acpi calls that did kmalloc() with the 'wrong' arg. in a 
context that didn't allow it (where /proc reads would).

   Unfortunately, the solutions I tried (diff. ways of deferral using notify 
handlers) still failed, or at least stuffed it on boot (which is what my 
current code-base does).  The last code I traced was the bit that looked up 
the full ACPI ref. from a local ref., and that does a malloc, so I did the 
lookup at module init and stored that full string to bypass the lookup 
malloc later, but then it just goes wrong a bit later :-(

-- 
[neil@fnx ~]# rm -f .signature
[neil@fnx ~]# ls -l .signature
ls: .signature: No such file or directory
[neil@fnx ~]# exit