Re: [patch 0/5] genirq: Distangle irq_request/release_resources() from irq_desc->lock

[Marc Zyngier]

On 29/06/17 22:33, Thomas Gleixner wrote:
> The irq_request/release_resources() callbacks are a problem on RT as they
> are called under irq_desc->lock with interrupts disabled.
> 
> Aside of that calling them under irq_desc->lock is conceptually wrong and
> has a (hard to trigger and probably theoretical) issue in free_irq(). See
> patch 4/5 for a detailed explanation.
> 
> The series contains also a fix for the exynos gpio driver, which fiddles
> with the irq masking in the resource callbacks, which is bogus and
> potentially harmful.
> 
> Finally it moves the irq timings deallocation out of the spin locked region.
> 
> Thanks,
> 
> 	tglx
> ---
>  drivers/pinctrl/samsung/pinctrl-exynos.c |    4 --
>  include/linux/irqdesc.h                  |    3 +
>  kernel/irq/irqdesc.c                     |    1 
>  kernel/irq/manage.c                      |   47 +++++++++++++++++++------------
>  4 files changed, 34 insertions(+), 21 deletions(-)

For the series:

Reviewed-by: Marc Zyngier <marc.zyngier@xxxxxxx>

	M.
-- 
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