From: Harry Wei <jiaweiwei.xiyou@gmail.com>
To: Connor Hansen <cmdkhh@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND]Remove a warning for drivers/edac/i82975x_edac.c
Date: Fri, 10 Jun 2011 13:07:50 +0800 [thread overview]
Message-ID: <20110610050747.GA3643@gmail.com> (raw)
In-Reply-To: <BANLkTin-iC8HFm2dmCmRTfYcBDDRbjZnFw@mail.gmail.com>
On Wed, Jun 08, 2011 at 11:17:21PM -0700, Connor Hansen wrote:
>
> this is not what the code you are changing does.
>
> the code is not assigned that value, its or'd with it.
>
> a test would be more like.
>
> #include <stdio.h>
> int main()
> {
> unsigned long page; //page
> unsigned int b = 5; //info->eap is u32 = unsigned int
> // typedef unsigned int __u32;
> page = (unsigned long) b;
> page |= 0x10000000ul;
>
> printf("%lu\n",page);
>
> return 0;
> }
>
> This produces no warning.
> $ gcc -g test.c && ./a.out
> 268435461
> $
>
> 0x10000000
> 10000000000000000000000000000
> 5
> 00000000000000000000000000101
> 0x10000000 | 5 =
> 10000000000000000000000000101
> 268435461
>
> I am green to kernel development so I will wait for someone with a bit
> more knowledge to
> chime in, or verify this warning.
> Connor
You are right, but it really has warnings yet.
My PC is also 32-bits.
Thanks
Harry Wei
next prev parent reply other threads:[~2011-06-10 5:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-09 3:04 [PATCH RESEND]Remove a warning for drivers/edac/i82975x_edac.c Harry Wei
2011-06-09 4:26 ` Connor Hansen
2011-06-09 5:25 ` Harry Wei
2011-06-09 6:17 ` Connor Hansen
2011-06-10 5:07 ` Harry Wei [this message]
2011-06-09 16:35 ` Randy Dunlap
2011-06-09 17:37 ` Randy Dunlap
2011-06-10 5:20 ` Harry Wei
2011-06-10 6:42 ` Connor Hansen
2011-06-12 15:50 ` Arvind R
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