Re: [PATCH 3/4] iovmm: replace __iounmap with omap_iounmap

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From: "ext Guzman Lugo, Fernando" <fernando.lugo@xxxxxx>
Subject: RE: [PATCH 3/4] iovmm: replace __iounmap with omap_iounmap
Date: Thu, 14 Oct 2010 10:18:30 +0200

> 
>> ________________________________________
>> From: Hiroshi DOYU [Hiroshi.DOYU@xxxxxxxxx]
>> Sent: Thursday, October 14, 2010 1:45 AM
>> To: Guzman Lugo, Fernando
>> Cc: felipe.contreras@xxxxxxxxx; tony@xxxxxxxxxxx;
>>  linux-kernel@xxxxxxxxxxxxxxx; andy.shevchenko@xxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx
>> Subject: Re: [PATCH 3/4] iovmm: replace __iounmap with omap_iounmap
>> 
>> Hi Fernando,
>> 
>> From: ext Fernando Guzman Lugo <x0095840@xxxxxx>
>> Subject: [PATCH 3/4] iovmm: replace __iounmap with omap_iounmap
>> Date: Thu, 14 Oct 2010 04:27:36 +0200
>> 
>> > Omap platform is omap_iounmap function.
>> >
>> > Signed-off-by: Fernando Guzman Lugo <x0095840@xxxxxx>
>> > ---
>> >  arch/arm/plat-omap/iovmm.c |    2 +-
>> >  1 files changed, 1 insertions(+), 1 deletions(-)
>> >
>> > diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c
>> > index 93a34d9..5489ca9 100644
>> > --- a/arch/arm/plat-omap/iovmm.c
>> > +++ b/arch/arm/plat-omap/iovmm.c
>> > @@ -821,7 +821,7 @@ void iommu_kunmap(struct iommu *obj, u32 da)
>> >       struct sg_table *sgt;
>> >       typedef void (*func_t)(const void *);
>> >
>> > -     sgt = unmap_vm_area(obj, da, (func_t)__iounmap,
>> 
>> +       sgt = unmap_vm_area(obj, da, (func_t)iounmap,
>> 
>> Woundn't the above be enough?
>> 
>> Eventually this "iounmap()" calls "__arch_iounmap()" ->
>> "omap_iounmap()". I don't see any special reason to call
>> "omap_iounmap()" here for now.
> 
> iounmap and __arch_iounmap are macros they cannot not
> be used there. If so, it gives a "undeclared" compile error.

Ok. I'll add this explanation as a note on this commit.
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