ACPI battery: fix async boot oops

> BUG: unable to handle kernel NULL pointer dereference at (null)

What happens is that the battery module's init sections are being freed
before the async callback (which was marked __init) has run. This theory
is supported by the fact that the bad RIP value is a vmalloc address.

The immediate fix is to make this a non-init call.

(A better long-term fix is of course to wait with init-section unloading
until a module's async initcalls have been run, which would allow us to
discard this function which is still only run once, after all. Perhaps a
new async_initcall() function for the async/module API, if this is needed
for other modules in the future?)

Reported-by: Arkadiusz Miskiewicz <[email protected]>
Signed-off-by: Vegard Nossum <[email protected]>
Tested-by: Alessandro Suardi <[email protected]>
Tested-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Len Brown <[email protected]>

0 files changed, 0 insertions, 0 deletions