netdev - Re: [PATCH] mwifiex: Use put_unaligned

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Date:   Thu, 5 Oct 2017 14:54:38 -0700
From:   Igor Mitsyanko <igor.mitsyanko.os@...ntenna.com>
To:     Himanshu Jha <himanshujha199640@...il.com>,
        Brian Norris <briannorris@...omium.org>
Cc:     Kalle Valo <kvalo@...eaurora.org>, amitkarwar@...il.com,
        nishants@...vell.com, gbhat@...vell.com, huxm@...vell.com,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mwifiex: Use put_unaligned_le32

On 10/05/2017 12:07 PM, Himanshu Jha wrote:
>>
>> In this case, the key is CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS. It
>> seems that asm-generic/unaligned.h is set up to include different
>> headers, based on the expected architecture behavior.
>>
> Yes, asm-generic/unaligned.h looks more appopriate and is most generic
> implementation of unaligned accesses and  arc specific.
> 

Probably the idea is that each ARCH knows exactly what is the best way 
to do unaligned access, so common code (like drivers) should include 
ARCH-specific asm/unaligned.h only. It will then decide how to do that 
and will include asm-generic/unaligned.h itself, if required.