Re: [PATCH/RFC] serial: sh-sci: Fix deadlock caused by serial output request

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On Mon, Nov 07, 2016 at 04:42:39PM +0100, Geert Uytterhoeven wrote:
> Hi Simon,
> 
> On Mon, Nov 7, 2016 at 4:40 PM, Simon Horman <horms@xxxxxxxxxxxx> wrote:
> > On Mon, Nov 07, 2016 at 04:20:56PM +0100, Geert Uytterhoeven wrote:
> >> On Mon, Nov 7, 2016 at 4:14 PM, Simon Horman <horms+renesas@xxxxxxxxxxxx> wrote:
> >> > From: Takatoshi Akiyama <takatoshi.akiyama.kj@xxxxxxxxxxxxxxxxxxxxxxxx>
> >> >
> >> > While spin is already locked, serial output request causes the deadlock,
> >> > because serial output process also tries to lock the spin.
> >> > This patch removes serial output with spin locked.
> >> >
> >> > Signed-off-by: Takatoshi Akiyama <takatoshi.akiyama.kj@xxxxxxxxxxxxxxxxxxxxxxxx>
> >> > Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
> >> > Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
> >>
> >> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> >>
> >> Gr{oetje,eeting}s,
> >
> > Thanks. Will you pass this on to Greg or should I do so?
> 
> Feel free to pass to Greg (doesn't he use patchwork on linux-serial?).
> Thanks!

Probably. I'll repost it as a non-RFC just to be on the safe side.

> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds
> 
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