[PATCH v4 2/2] drm/rockchip: vop: fix irq disabled after vop driver probed

[Marc Zyngier]

On 18/06/18 09:19, Heiko Stübner wrote:
> Hi Marc,
> 
> Am Mittwoch, 13. Juni 2018, 15:01:27 CEST schrieb Marc Zyngier:
>> On 12/06/18 14:20, Heiko Stuebner wrote:
>>> From: Sandy Huang <hjc at rock-chips.com>
>>>
>>> The vop irq is shared between vop and iommu and irq probing in the
>>> iommu driver moved to the probe function recently. This can in some
>>> cases lead to a stall if the irq is triggered while the vop driver
>>> still has it disabled, but the vop irq handler gets called.
>>>
>>> But there is no real need to disable the irq, as the vop can simply
>>> also track its enabled state and ignore irqs in that case.
>>> For this we can simply check the power-domain state of the vop,
>>> similar to how the iommu driver does it.
>>>
>>> So remove the enable/disable handling and add appropriate condition
>>> to the irq handler.
>>>
>>> changes in v2:
>>> - move to just check the power-domain state
>>> - add clock handling
>>> changes in v3:
>>> - clarify comment to speak of runtime-pm not power-domain
>>> changes in v4:
>>> - address Marc's comments (clk-enable WARN_ON and style improvement)
>>>
>>> Fixes: d0b912bd4c23 ("iommu/rockchip: Request irqs in rk_iommu_probe()")
>>> Cc: stable at vger.kernel.org
>>> Signed-off-by: Sandy Huang <hjc at rock-chips.com>
>>> Signed-off-by: Heiko Stuebner <heiko at sntech.de>
>>> Tested-by: Ezequiel Garcia <ezequiel at collabora.com>
>>
>> Reviewed-by: Marc Zyngier <marc.zyngier at arm.com>
> 
> could I ask you to also look at patch1 of this series, to give it an
> Ack or Review? drm-misc documentation very strongly suggests [0]
> to have at least another set of eyes on a patch and so far noone
> came forward ;-)
> 
> This of course also applies to everybody else in the Cc list :-D

Please feel free to apply my

Acked-by: Marc Zyngier <marc.zyngier at arm.com>

to that one.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...