From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dirk Behme <dirk.behme@googlemail.com>
Date: Tue, 21 Dec 2010 09:37:14 +0100
Subject: [U-Boot] [RFC PATCH v2] ARM: Avoid compiler optimization for
 usages of readb, writeb and friends.
In-Reply-To: <20101221081713.B0277B715C@gemini.denx.de>
References: <1292711230-3234-1-git-send-email-holler@ahsoftware.de>
	<4D0DB994.1020703@googlemail.com> <4D0DDCEF.2040806@ahsoftware.de>
	<AANLkTik3-EL1VDpn1L5YY01Amv6VzSEKduxU=R9nPJrx@mail.gmail.com>
	<4D0E643A.9040001@ahsoftware.de>
	<AANLkTinWsOgqOXyLk+nN0AB8Kw33txG9Ot3Ji7Ckd-SO@mail.gmail.com>
	<4D0EA9BB.4050002@ahsoftware.de>
	<AANLkTikxZM3G2HTXhf1BNy28zkiBdJ-=Q4RWSv13ZQcS@mail.gmail.com>
	<AANLkTiksYKRt7DMsVwqA--WAachCfJuC65v-XgotLLyS@mail.gmail.com>
	<4D0F8E75.2010107@ahsoftware.de>
	<AANLkTinXN-as+0-k9HZmh571vZPdzOh8hmq3zX4XSQta@mail.gmail.com>
	<AANLkTinMK=gzYgyUTjkCg2y1g9YuRAu_P-DS0GARrfPR@mail.gmail.com>
	<4D105324.2080201@googlemail.com> <4D105583.8070703@free.fr>
	<4D105FB3.3090801@googlemail.com>
	<20101221081713.B0277B715C@gemini.denx.de>
Message-ID: <4D10673A.4060306@googlemail.com>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

On 21.12.2010 09:17, Wolfgang Denk wrote:
> Dear Dirk Behme,
>
> In message<4D105FB3.3090801@googlemail.com>  you wrote:
>>
>> Broken:
>> ======
> ...
>> static void omap_nand_hwcontrol(struct mtd_info *mtd, int32_t cmd,
>>       uint32_t ctrl)
>> {
>>    register struct nand_chip *this = mtd->priv;
>> ...
>>    if (cmd != -1)
>>     ({ do { } while (0); (*(volatile unsigned char *)(this->IO_ADDR_W)>
>> = (cmd)); });
>
> But this is the old, discarded version of the patch.
>
> I though we had agreed that we have to use the
>
> 	__asm__ __volatile__ ("" : : : "memory")
>
> version instead?

Yes.

I mixed the patches :(

Sorry for the noise. I just sent the hopefully correct version some 
minutes ago.

Thanks

Dirk