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    SubjectRe: [PATCH cmpxchg 12/14] sh: Emulate one-byte cmpxchg
    Hi Paul,

    On Mon, Apr 8, 2024 at 7:50 PM Paul E. McKenney <paulmck@kernel.org> wrote:
    > Use the new cmpxchg_emu_u8() to emulate one-byte cmpxchg() on sh.
    >
    > [ paulmck: Drop two-byte support per Arnd Bergmann feedback. ]
    >
    > Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

    Thanks for your patch!

    > --- a/arch/sh/include/asm/cmpxchg.h
    > +++ b/arch/sh/include/asm/cmpxchg.h
    > @@ -56,6 +56,8 @@ static inline unsigned long __cmpxchg(volatile void * ptr, unsigned long old,
    > unsigned long new, int size)
    > {
    > switch (size) {
    > + case 1:
    > + return cmpxchg_emu_u8((volatile u8 *)ptr, old, new);

    The cast is not needed.

    > case 4:
    > return __cmpxchg_u32(ptr, old, new);
    > }

    Gr{oetje,eeting}s,

    Geert

    --
    Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68korg

    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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