Re: dvb usb issues since kernel 4.9

[Hanna Hawa]

Hi Linus,

On 07/17/2018 08:09 PM, Linus Torvalds wrote:
> On Tue, Jul 17, 2018 at 4:58 AM Hanna Hawa <hannah@xxxxxxxxxxx> wrote:
> > After some debug/bisect/diff, found that patch "softirq: Let ksoftirqd
> > do its job" is problematic patch.
>
> Ok, this thread died down without any resolution.
>
> > - Using v4.14.0 (including softirq patch) and the additional fix
> > proposed by Linus - no timeout issue.
>
> Are you talking about the patch that made HI_SOFTIRQ and
> TASKLET_SOFTIRQ special, and had this:
>
>   #define SOFTIRQ_NOW_MASK ((1 << HI_SOFTIRQ) | (1 << TASKLET_SOFTIRQ))
>
> in it?
yes, exactly..

Link to the patch:
https://git.linuxtv.org/mchehab/experimental.git/commit/?h=v4.15%2bmedia%2bdwc2&id=ccf833fd4a5b99c3d3cf2c09c065670f74a230a7

Thanks,
Hanna

> I think I'll just commit the damn thing. It's hacky, but it's simple,
> and it never got applied because we had smarter suggestions. But the
> smarter suggestions never ended up being applied either, so..
>
>                        Linus