drm/rockchip: Don't use spin_lock_irqsave in interrupt context

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The rockchip DRM driver is quite careful to disable interrupts
when taking a lock that is also taken in interrupt context,
which is a good thing.

What is a bit over the top is to use spin_lock_irqsave when
already in interrupt context, as you cannot take another
interrupt again, and disabling interrupt is just pure
overhead.

Switching to the non _irqsave version in interrupt context is
more logical, and less heavy handed.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180220130120.5254-4-marc.zyngier@arm.com

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Marc Zyngier 2018-02-20 13:01:20 +00:00 • committed by Heiko Stuebner

parent 76f1416e64

commit 1c85f2fa68

1 changed files with 4 additions and 6 deletions

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drivers/gpu/drm/rockchip/rockchip_drm_vop.c

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