[PATCH] x86: Add early quirk to reset Apple AirPort card

[Matt Fleming]

On Sun, 29 May, at 01:35:28AM, Lukas Wunner wrote:
> The EFI firmware on Macs contains a full-fledged network stack for
> downloading OS X images from osrecovery.apple.com. Unfortunately
> on Macs introduced 2011 and 2012, EFI brings up the Broadcom 4331
> wireless card on every boot and leaves it enabled even after
> ExitBootServices has been called. The card continues to assert its IRQ
> line, causing spurious interrupts if the IRQ is shared. It also corrupts
> memory by DMAing received packets, allowing for remote code execution
> over the air. This only stops when a driver is loaded for the wireless
> card, which may be never if the driver is not installed or blacklisted.

[... Snip a very thorough changelog ...]

This patch looks fine to me from an EFI perspective.

Acked-by: Matt Fleming <matt at codeblueprint.co.uk>