linux-kernel - RE: [PATCH 1/2] staging: andriod: ion: Add ion_phys_get_by

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Date:	Mon, 5 Jan 2015 15:51:54 +0000
From:	"Tang, Feng" <feng.tang@...el.com>
To:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
CC:	Greg KH <gregkh@...uxfoundation.org>,
	John Stultz <john.stultz@...aro.org>,
	Colin Cross <ccross@...roid.com>,
	Heesub Shin <heesub.shin@...sung.com>,
	Mitchel Humpherys <mitchelh@...eaurora.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/2] staging: andriod: ion: Add ion_phys_get_by_id
 function

Hi Alan,

Thanks for the review.

> -----Original Message-----
> From: One Thousand Gnomes [mailto:gnomes@...rguk.ukuu.org.uk]
> Sent: Monday, January 05, 2015 10:25 PM
> To: Tang, Feng
> Cc: Greg KH; John Stultz; Colin Cross; Heesub Shin; Mitchel Humpherys;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 1/2] staging: andriod: ion: Add ion_phys_get_by_id
> function
> 
> On Sun,  4 Jan 2015 15:11:51 +0800
> Feng Tang <feng.tang@...el.com> wrote:
> 
> > There is user case that user only knows the ion_handle idand
> > needs to get the physical addr and len. So add this wrapper to
> > meet this requirement.
> 
> What is the in-tree upstream user of this new function ? I don't see one
> in your patches ?

That's true. We are working on enabling a new platform which heavily
uses ION and some driver needs to use this API, so I guess there is some
other plaforms may have the similar requirements. If you think this patch
should be merged after there is an in-tree user, I'm OK with it :)

I assume that driver's author will start to push his drivers in batch soon.

Thanks,
Feng
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