[10/15] tty: hvc: use mutex instead of spinlock for hvc_structs lock

[Michael Ellerman]

On Mon, 2018-04-30 at 14:55:53 UTC, Nicholas Piggin wrote:
> This allows hvc operations to sleep under the lock.
> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/a9bf5c8a271b9a954709b7ada1bd25

cheers