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  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:	Sun, 24 Aug 2008 18:31:44 +0300
From:	Benny Halevy <bhalevy@...asas.com>
To:	Larry Finger <Larry.Finger@...inger.net>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Dominik Brodowski <linux@...inikbrodowski.net>
Subject: Re: Help with compiler warning

On Aug. 24, 2008, 18:29 +0300, Benny Halevy <bhalevy@...asas.com> wrote:
> On Aug. 22, 2008, 4:36 +0300, Larry Finger <Larry.Finger@...inger.net> wrote:
>> In drivers/pcmcia/cardbus.c, the following statement
>>
>>          memcpy_fromio(ptr, s->cb_cis_virt + addr, len);
>>
>> generates the warning
>>
>>    CC [M]  drivers/pcmcia/cardbus.o
>> include/asm/io_32.h: In function ‘memcpy_fromio’:
>> include/asm/io_32.h:151: warning: passing argument 2 of ‘__memcpy’ 
>> discards qualifiers from pointer target type
>>
>> s->cb_cis_virt is "void __iomem" and addr is uint.
>>
>> What cast does argument 2 need to silence the warning?
> 
> memcpy_fromio takes a (const volatile void __iomem *) for the 
> src address.

So the culprit could be the volatile qualifier...

> 
> Benny
> 
>> Thanks,
>>
>> Larry
>> --
>> 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/
> 

--
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/

Powered by blists - more mailing lists