From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Thompson <nick.thompson@ge.com>
Date: Mon, 26 Sep 2011 10:26:51 +0100
Subject: [U-Boot] [PATCH] GCC4.4: Squash multiple warnings due to strict
 aliasing
In-Reply-To: <1317002798-27112-1-git-send-email-marek.vasut@gmail.com>
References: <1317002798-27112-1-git-send-email-marek.vasut@gmail.com>
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On 26/09/11 03:06, Marek Vasut wrote:
> Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
> ---
>  arch/arm/include/asm/io.h |   30 ++++++++++++++++++------------
>  1 files changed, 18 insertions(+), 12 deletions(-)
>
> diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
> index 1fbc531..61f4987 100644
> --- a/arch/arm/include/asm/io.h
> +++ b/arch/arm/include/asm/io.h
> @@ -78,43 +78,49 @@ static inline phys_addr_t virt_to_phys(void * vaddr)
>  extern inline void __raw_writesb(unsigned int addr, const void *data, int bytelen)
>  {
>  	uint8_t *buf = (uint8_t *)data;
> -	while(bytelen--)
> -		__arch_putb(*buf++, addr);
> +	int i;
> +	for (i = 0; i < bytelen; i++)
> +		__arch_putb(buf[i], addr);
>  }
>  

This fixes the problem in these use cases, but leaves the door open.

Would it be better to change the __arch_putb macro into an extern inline function
instead which would catch these and future cases?

Nick.