linux-kernel - Re: [PATCH V7 2/3] qe_common: add qe_muram

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Date:	Wed, 9 Sep 2015 11:38:35 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Zhao Qiang-B45475 <qiang.zhao@...escale.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"lauraa@...eaurora.org" <lauraa@...eaurora.org>,
	Xie Xiaobo-R63061 <X.Xie@...escale.com>,
	"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
	Li Yang-Leo-R58472 <LeoLi@...escale.com>,
	"paulus@...ba.org" <paulus@...ba.org>
Subject: Re: [PATCH V7 2/3] qe_common: add qe_muram_ functions to manage
 muram

On Sun, 2015-09-06 at 01:37 -0500, Zhao Qiang-B45475 wrote:
> On Mon, 2015-09-2 at 8:34 +0800, Wood Scott-B07421 wrote:
> > -----Original Message-----
> > From: Wood Scott-B07421
> > Sent: Wednesday, September 02, 2015 8:34 AM
> > To: Zhao Qiang-B45475
> > Cc: linux-kernel@...r.kernel.org; linuxppc-dev@...ts.ozlabs.org;
> > lauraa@...eaurora.org; Xie Xiaobo-R63061; benh@...nel.crashing.org; Li
> > Yang-Leo-R58472; paulus@...ba.org
> > Subject: Re: [PATCH V7 2/3] qe_common: add qe_muram_ functions to manage
> > muram
> > 
> > On Mon, 2015-08-31 at 16:58 +0800, Zhao Qiang wrote:
> > 
> > > @@ -187,12 +190,25 @@ static inline int qe_alive_during_sleep(void)  }
> > > 
> > >  /* we actually use cpm_muram implementation, define this for
> > > convenience */ -#define qe_muram_init cpm_muram_init -#define
> > > qe_muram_alloc cpm_muram_alloc -#define qe_muram_alloc_fixed
> > > cpm_muram_alloc_fixed -#define qe_muram_free cpm_muram_free -#define
> > > qe_muram_addr cpm_muram_addr -#define qe_muram_offset cpm_muram_offset
> > > +#define cpm_muram_init qe_muram_init
> > > +#define cpm_muram_alloc qe_muram_alloc #define cpm_muram_alloc_fixed
> > > +qe_muram_alloc_fixed #define cpm_muram_free qe_muram_free #define
> > > +cpm_muram_addr qe_muram_addr #define cpm_muram_offset qe_muram_offset
> > 
> > Why?  This is unnecessary churn.
> > 
> This is necessary. QE is on both ARM and PowerPC, its code is under public 
> code.
> But CPM is only on PowerPC and its code is under PowerPC.
> So when build ARM, QE will not find cpm_muram_* function.

If you move the cpm_muram functions to drivers/soc, then ARM will find them.  
There is no need to rename them.

-Scott

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