linux-kernel - Re: [PATCH] mfd: rtsx: fix PM suspend for 5227 & 5249

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Message-ID: <541B85B1.1080901@realsil.com.cn>
Date:	Fri, 19 Sep 2014 09:24:01 +0800
From:	micky <micky_ching@...lsil.com.cn>
To:	Lee Jones <lee.jones@...aro.org>
CC:	<sameo@...ux.intel.com>, <devel@...uxdriverproject.org>,
	<linux-kernel@...r.kernel.org>, <gregkh@...uxfoundation.org>,
	<rogerable@...ltek.com>, <wei_wang@...lsil.com.cn>
Subject: Re: [PATCH] mfd: rtsx: fix PM suspend for 5227 & 5249

On 09/19/2014 08:21 AM, Lee Jones wrote:
> On Thu, 18 Sep 2014, micky wrote:
>
>> On 09/18/2014 12:53 PM, Lee Jones wrote:
>>> On Thu, 18 Sep 2014, micky_ching@...lsil.com.cn wrote:
>>>
>>>> From: Micky Ching <micky_ching@...lsil.com.cn>
>>>>
>>>> Fix rts5227&5249 failed send buffer cmd after suspend,
>>>> PM_CTRL3 should reset before send any buffer cmd after suspend.
>>>> Otherwise, buffer cmd will failed, this will lead resume fail.
>>>>
>>>> Signed-off-by: Micky Ching <micky_ching@...lsil.com.cn>
>>>> ---
>>>>   drivers/mfd/rts5227.c        |   19 +++++++++++++++++++
>>>>   drivers/mfd/rts5249.c        |    4 ++++
>>>>   drivers/mfd/rtsx_pcr.h       |    1 +
>>>>   include/linux/mfd/rtsx_pci.h |   12 ++++++++++++
>>>>   4 files changed, 36 insertions(+)
>>> I think you'll find you just broke the build.
>>>
>>> What happens when you compile these as modules?
>> I build as modules with no warning or error, did you find anything wrong?
> Yes, you don't export the functions.
>
> EXPORT_SYMBOL()
No need export symbol, all rts52xx.c and rtsx_pcr.c will build into a 
single rtsx_pci.ko file.
and we do not want these functions to be called in other place.
Because they are not a good interface, and may be changed in the future.

>

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