Re: [linux-pm] subtle pm_runtime_put_sync race and sdio functions

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Kevin,

> Therefore, what is ideally needed is the ability for A's suspend to
> simply call pm_runtime_suspend() so the subsystem can do the work.
> However, since runtime transitions are locked out by this time, that
> doesn't work.  IOW, what is needed is a way for a system suspend to say
> "please finish the runtime suspend that was already requested."
>
> What I've done to work around this in driver A is to manually check
> pm_runtime_suspended() and directly call the subsystem's runtime
> suspend/resume (patch below[1].  NOTE, I've used the _noirq methods to
> ensure device A is available when device B needs it.)

suppose this driver runs on a platform that has runtime PM disabled.
How is it going to work then?

Thanks,
   Vitaly
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux