linux-kernel - Re: [PATCH V2] AHCI: Workaround for ThunderX Errata#22536

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Message-ID: <56C37524.5090000@caviumnetworks.com>
Date:	Tue, 16 Feb 2016 11:14:44 -0800
From:	Tirumalesh Chalamarla <tchalamarla@...iumnetworks.com>
To:	Robert Richter <rric@...nel.org>, Tejun Heo <tj@...nel.org>
CC:	<stripathi@....com>, <linux-ide@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V2] AHCI: Workaround for ThunderX Errata#22536



On 02/16/2016 06:42 AM, Robert Richter wrote:
> On 15.02.16 13:30:41, Tejun Heo wrote:
>> On Sun, Feb 14, 2016 at 07:36:18PM -0800, Tirumalesh Chalamarla wrote:
>>> There is no need for special Driver, AHCI is sufficient for ThunderX, the
>>> file only contains this interrupt handler,
>>> is it preferable if this interrupt handler in libahci.c with others, instead
>>> of separate file?
>>
>> Yeap, just fold it in ahci.c with surrounding #ifdef guard.
>
> Yes, please use #ifdef CONFIG_CAVIUM_ERRATUM_22536 ... and add a
> kconfig entry for this to arch/arm64/Kconfig.
>
Are you sure, this is not a workaround that is based on alternative 
framework rather on pci device and vendor

do you think CONFIG_ARCH_THUNDER a good alternative?



> -Robert
>