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Date: Fri, 17 Oct 2014 08:44:09 -0400 From: Peter Hurley <peter@...leysoftware.com> To: Jiri Slaby <jslaby@...e.cz>, Greg Kroah-Hartman <gregkh@...uxfoundation.org> CC: linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk> Subject: Re: [PATCH -next 05/10] tty: Document defunct ASYNC_* bits in uapi header Hi Jiri, On 10/17/2014 04:46 AM, Jiri Slaby wrote: > On 10/16/2014, 10:54 PM, Peter Hurley wrote: >> Note the serial_struct flags for which the kernel ignores and performs >> no action. The flags cannot be removed since they form part of the >> userspace interface via the TIOCSSERIAL/TIOCGSERIAL ioctls. > > Hello, > > would it make sense to mark them deprecated somehow? At build time A build warning when the macro is expanded would be best, but my c-preprocessor-fu is terrible, so I have no idea how to make that work. > or > at least warn in the serial core that "current->comm is using a > deprecated flag"_ratelimited()? If we just print the message at TIOCSSERIAL if any of the deprecated bits are set, that would be ok. Probably the only issue would be that setserial could cause this message at will, so log flooding would be a concern. Regards, Peter Hurley -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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