Re: [PATCH] x86/hpet: Prevent might sleep splat on resume

[Sergey Senozhatsky]

On (03/01/17 21:10), Thomas Gleixner wrote:
> Sergey reported a might sleep warning triggered from the hpet resume
> path. It's caused by the call to disable_irq() from interrupt disabled
> context.
> 
> The problem with the low level resume code is that it is not accounted as a
> special system_state like we do during the boot process. Calling the same
> code during system boot would not trigger the warning. That's inconsistent
> at best.
> 
> In this particular case it's trivial to replace the disable_irq() with
> disable_hardirq() because this particular code path is solely used from
> system resume and the involved hpet interrupts can never be force threaded.
> 
> Reported-by: Sergey Senozhatsky <sergey.senozhatsky.work@xxxxxxxxx>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx


Tested-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>

thanks!

	-ss