Re: [PATCH] usb: chipidea: fix RT issue for udc

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2021년 8월 16일 (월) 오후 2:22, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>님이 작성:
>
> On Mon, Aug 16, 2021 at 08:52:06AM +0800, Peter Chen wrote:
> > On 21-08-10 15:02:28, Jeaho Hwang wrote:
> > > hw_ep_prime sometimes fails if irq occurs while it rus on RT kernel.
> > > to prevent local_irq_save should keep the function from irqs.
> > >
> > > I am not sure where is the best to submit this patch, between RT and USB
> > > community so sending to both. thanks.
> >
> > Greg, do you have any suggestions about it, the RT kernel schedules the interrupt
> > handler (top-half) out which causes the USB hardware atomic sequences are broken,
> > these hardware operations needs to be executed within limited time.
>
> Try working with the RT developers on this.

Then do you think those kinds of patches should be applied to linux-rt
instead of mainline?

-- 
황재호, Jay Hwang, linux team manager of RTst
010-7242-1593




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