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SubjectRe: [PATCH 1/5] asm-generic, termios: add alias constants from MIPS
Hi Peter,

Thanks for your patch!

On Fri, Oct 5, 2018 at 12:30 AM H. Peter Anvin (Intel) <hpa@zytor.com> wrote:
> Some architectures, in this case MIPS, need a couple of legacy alias
> constants for bits. There really is no reason why we can't define them
> generically for all architectures.

To avoid polluting namespace?
To avoid people using them in a context not specific to MIPS?

> --- a/include/uapi/asm-generic/termbits.h
> +++ b/include/uapi/asm-generic/termbits.h
> @@ -8,7 +8,10 @@ typedef unsigned char cc_t;
> typedef unsigned int speed_t;
> typedef unsigned int tcflag_t;
>
> -#define NCCS 19
> +#ifndef NCCS
> +# define NCCS 19
> +#endif
> +
> struct termios {
> tcflag_t c_iflag; /* input mode flags */
> tcflag_t c_oflag; /* output mode flags */
> @@ -49,6 +52,7 @@ struct ktermios {
> #define VTIME 5
> #define VMIN 6
> #define VSWTC 7
> +#define VSWTCH VSWTC

I'd at least add a comment /* legacy MIPS */ here.

> #define VSTART 8
> #define VSTOP 9
> #define VSUSP 10
> @@ -173,6 +177,7 @@ struct ktermios {
> #define ECHONL 0000100
> #define NOFLSH 0000200
> #define TOSTOP 0000400
> +#define ITOSTOP TOSTOP

Likewise.

> #define ECHOCTL 0001000
> #define ECHOPRT 0002000
> #define ECHOKE 0004000

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
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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