drm/armada: use xchg() to atomically update dplane->old_fb

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Rather than using a spinlock, use xchg() to atomically update
dplane->old_fb.  This allows us to eliminate dplane->lock.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Russell King 2015-07-15 18:11:24 +01:00

parent fecfdb2db8

commit 66377efa3f

1 changed files with 2 additions and 10 deletions

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drivers/gpu/drm/armada/armada_overlay.c

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