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From: "Guan Xuetao" <gxt@mprc.pku.edu.cn>
To: "Arnd Bergmann" <arnd@arndb.de>
Cc: <linux-kernel@vger.kernel.org>, <linux-arch@vger.kernel.org>
Subject: Warning with asm-generic/div64.h
Date: Fri, 25 Mar 2011 18:19:15 +0800	[thread overview]
Message-ID: <007801cbead6$1984b6e0$4c8e24a0$@mprc.pku.edu.cn> (raw)

Hi, Arnd:

Following warning is generated when using <asm-generic/div64.h>

kernel/power/hibernate.c: In function 'swsusp_show_speed':
kernel/power/hibernate.c:227: warning: comparison of distinct pointer types lacks a cast

After expanding the do_div() macro, the problem line is:

	(void)(((typeof((n)) *)0) == ((uint64_t *)0));

while the type of n is s64.

I am puzzled with the usage of the problem line.

And how to correct it?

Guan Xuetao


             reply	other threads:[~2011-03-25 10:19 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-25 10:19 Guan Xuetao [this message]
2011-03-25 13:39 ` Arnd Bergmann
2011-03-29 11:41   ` Guan Xuetao
2011-03-29 11:58     ` Arnd Bergmann

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