Re: [patch for 4.0] x86: silence warning in /dev/mem support

From: Pavel Machek <pavel@ucw.cz>
To: Ingo Molnar <mingo@kernel.org>
Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
	jgross@suse.com, roland@purestorage.com,
	akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [patch for 4.0] x86: silence warning in /dev/mem support
Date: Fri, 17 Apr 2015 10:48:46 +0200	[thread overview]
Message-ID: <20150417084846.GB13741@amd> (raw)
In-Reply-To: <20150417083915.GA12451@gmail.com>

Hi!

> >   CC      arch/x86/mm/ioremap.o
> >   arch/x86/mm/ioremap.c: In function ‘xlate_dev_mem_ptr’:
> >   arch/x86/mm/ioremap.c:363:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> >      addr = (void *)((unsigned long)addr | (phys & ~PAGE_MASK));
> >                ^
> >   LD      arch/x86/mm/built-in.o
> > 		 
> > pavel@amd:/data/l/linux$ gcc --version
> > gcc (Debian 4.9.2-10) 4.9.2
> 
> So this code has not been changed for a year or so in theory, and I've 
> never seen this warning with GCC 4.9.1. I'm wondering how it 
> triggered. Could you send me your .config that triggers this?

Config sent in private email. 32-bit kernel.

Best regards,
									Pavel
-- 
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