linux-kernel - Re: [PATCH 1/3] tty: serial: Use hub6_serial_X when CONFIG_SERIAL_8250

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 11 Mar 2011 14:30:10 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@...esas.com>,
	gregkh@...e.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] tty: serial: Use hub6_serial_X when
 CONFIG_SERIAL_8250_HUB6 is defined

> or some variation of this. It's fine as long as this code never gets
> called, but incorrect nonetheless.

I disagree - the WARN(1) is certainly correct.

> I think it would be much cleaner if architectures that cannot do this
> would not have to define those functions and we could make sure that
> all drivers that do inb() have correct Kconfig dependencies.

For 8250 the way to do that is to remove all the switches and port type
stuff and propogate to setting ->serial_in and ->serial_out rather than
splattering the code with ifdefs. At that point you'd have a "lib8250" or
similar and an 8250_io/pci driver.

Alan
--
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/