linux-kernel - Re: linux-next: build failure after merge of the tty tree

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Message-ID: <20120906124752.13831179@bob.linux.org.uk>
Date:	Thu, 6 Sep 2012 12:47:52 +0100
From:	Alan Cox <alan@...ux.intel.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Greg KH <greg@...ah.com>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, Alexander Shiyan <shc_work@...l.ru>
Subject: Re: linux-next: build failure after merge of the tty tree

On Thu, 6 Sep 2012 15:10:14 +1000
Stephen Rothwell <sfr@...b.auug.org.au> wrote:

> Hi Greg,
> 
> After merging the tty tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> In file included from drivers/tty/serial/sccnxp.c:20:0:
> include/linux/serial_core.h: In function 'uart_handle_break':
> include/linux/serial_core.h:543:30: error: dereferencing pointer to
> incomplete type
> 
> Caused by commit 1d65c0b12656 ("serial: New serial driver SCCNXP").
> This seems to be just exposing a preexisting problem with
> linux/serial_core.h: when SUPPORT_SYSRQ is defined, this header
> depends on linux/console.h.  I can only imagein that every other use
> of serial_core.h pre-includes (maybe indirectly) console.h (or
> doesn't define SUPPORT_SYSRQ).
> 
> I have applied the following patch, but a better solution should be
> figured out.


I think thats actually probably the right patch. Better to keep the
header explicit than try and build some tangled mess of recursive
includes.

Acked-by: Alan Cox <alan@...ux.intel.com>
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