linux-kernel - Re: [PATCH] ARM: Use udiv/sdiv for __aeabi

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Message-ID: <527D3318.2050003@codeaurora.org>
Date:	Fri, 08 Nov 2013 10:53:12 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>,
	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions

On 11/08/13 08:52, Russell King - ARM Linux wrote:
> On Fri, Nov 08, 2013 at 10:58:42AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
>> On 11:20 Thu 07 Nov     , Stephen Boyd wrote:
>>> @@ -381,6 +384,13 @@ static void __init cpuid_init_hwcaps(void)
>>>  		elf_hwcap |= HWCAP_IDIVT;
>>>  	}
>>>  
>>> +#ifdef CONFIG_THUMB2_KERNEL
>> if (IS_ENABLED(CONFIG_THUMB2_KERNEL) && elf_hwcap & HWCAP_IDIVT)
>>> +	if (elf_hwcap & HWCAP_IDIVT)
>>> +#else
>>> +	if (elf_hwcap & HWCAP_IDIVA)
>>> +#endif
> Take another look, and you'll see the change that you're suggesting is
> wrong.  Instead, the following may be a more reasonable suggestion as
> a suitable replacement:
>
> 	if (elf_hwcap & (IS_ENABLED(CONFIG_THUMB2_KERNEL) ?
> 				HWCAP_IDIVT : HWCAP_IDIVA))

I can use IS_ENABLED() but I'd prefer a local variable to make it
simpler in the conditional.

-- 
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