[PATCH 1/2] drm/vc4: Account for interrupts in flight

[Eric Anholt]

Stefan Schake <stschake at gmail.com> writes:

> Synchronously disable the IRQ to make the following cancel_work_sync
> invocation effective.
>
> An interrupt in flight could enqueue further overflow mem work. As we
> free the binner BO immediately following vc4_irq_uninstall this caused
> a NULL pointer dereference in the work callback vc4_overflow_mem_work.
>
> Link: https://github.com/anholt/linux/issues/114
> Signed-off-by: Stefan Schake <stschake at gmail.com>
> Fixes: d5b1a78a772f ("drm/vc4: Add support for drawing 3D frames.")

Reviewed and applied this one.  Thanks!
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