linux-kernel - Re: [PATCH] sparc: don't reference obsolete termio struct for TC* constants

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Message-ID: <87ecqyaefl.fsf@gentoo.org>
Date: Sun, 19 Oct 2025 20:18:06 +0100
From: Sam James <sam@...too.org>
To: "David S. Miller" <davem@...emloft.net>
Cc: Andreas Larsson <andreas@...sler.com>,  Stian Halseth <stian@....no>,
  sparclinux@...r.kernel.org,  linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sparc: don't reference obsolete termio struct for TC*
 constants

Sam James <sam@...too.org> writes:

> Similar in nature to ab107276607af90b13a5994997e19b7b9731e251. glibc-2.42
> drops the legacy termio struct, but the ioctls.h header still defines some
> TC* constants in terms of termio (via sizeof). Hardcode the values instead.
>
> This fixes building Python for example, which falls over like:
>   ./Modules/termios.c:1119:16: error: invalid application of 'sizeof' to incomplete type 'struct termio'
>
> Link: https://bugs.gentoo.org/961769
> Link: https://bugs.gentoo.org/962600
> Co-authored-by: Stian Halseth <stian@....no>
> Signed-off-by: Sam James <sam@...too.org>
> ---
> v3: Fix constants.
> v2: Fix title.
>
>  arch/sparc/include/uapi/asm/ioctls.h | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Ping.

>
> diff --git a/arch/sparc/include/uapi/asm/ioctls.h b/arch/sparc/include/uapi/asm/ioctls.h
> index 7fd2f5873c9e7..f26befbf690fb 100644
> --- a/arch/sparc/include/uapi/asm/ioctls.h
> +++ b/arch/sparc/include/uapi/asm/ioctls.h
> @@ -5,10 +5,10 @@
>  #include <asm/ioctl.h>
>  
>  /* Big T */
> -#define TCGETA		_IOR('T', 1, struct termio)
> -#define TCSETA		_IOW('T', 2, struct termio)
> -#define TCSETAW		_IOW('T', 3, struct termio)
> -#define TCSETAF		_IOW('T', 4, struct termio)
> +#define TCGETA          0x40125401
> +#define TCSETA          0x80125402
> +#define TCSETAW         0x80125403
> +#define TCSETAF         0x80125404
>  #define TCSBRK		_IO('T', 5)
>  #define TCXONC		_IO('T', 6)
>  #define TCFLSH		_IO('T', 7)