All of lore.kernel.org
 help / color / mirror / Atom feed
From: Greg KH <gregkh@linuxfoundation.org>
To: Alexey Skidanov <alexey.skidanov@intel.com>
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] staging: android: ion: Add implementation of dma_buf_vmap and dma_buf_vunmap
Date: Tue, 30 Jan 2018 23:15:01 +0100	[thread overview]
Message-ID: <20180130221501.GA6717@kroah.com> (raw)
In-Reply-To: <1517344753-29021-1-git-send-email-alexey.skidanov@intel.com>

On Tue, Jan 30, 2018 at 10:39:13PM +0200, Alexey Skidanov wrote:
> dma_buf_vmap and dma_buf_vunmap allow drivers to access buffers, created by ion.

But why would anyone ever want to do that?  What is wrong with the
existing interfaces that drivers use to access buffers created by ion?

What code uses this new interface?

We need a bit more information please.

thanks,

greg k-h
_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel

  parent reply	other threads:[~2018-01-30 22:15 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-30 20:39 [PATCH v2] staging: android: ion: Add implementation of dma_buf_vmap and dma_buf_vunmap Alexey Skidanov
2018-01-30 20:47 ` Dan Carpenter
2018-01-30 22:15 ` Greg KH [this message]
2018-01-30 23:44   ` alexey
2018-01-31  7:58     ` Dan Carpenter
2018-01-31  8:38     ` Greg KH

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180130221501.GA6717@kroah.com \
    --to=gregkh@linuxfoundation.org \
    --cc=alexey.skidanov@intel.com \
    --cc=devel@driverdev.osuosl.org \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.