linux-kernel - Re: [PATCH] Platform: goldfish: goldfish_pipe.c: Add DMA support using managed version

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Date:	Sun, 7 Feb 2016 21:27:35 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Shraddha Barke <shraddha.6596@...il.com>
Cc:	Peter Senna Tschudin <peter.senna@...il.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Platform: goldfish: goldfish_pipe.c: Add DMA support
 using managed version

On Sat, Feb 06, 2016 at 10:36:20AM +0530, Shraddha Barke wrote:
> setup_access_params_addr has 2 goals-
> 
> -Initialize the access_params field so that it can be used to send and read
> commands from the device in access_with_param
> -Get a bus address for the allocated memory to transfer to the device.
> 
> Replace the combination of devm_kzalloc and _pa() with dmam_alloc_coherent.
> Coherent mapping guarantees that the device and CPU are in sync.
> 
> Signed-off-by: Shraddha Barke <shraddha.6596@...il.com>
> ---
>  drivers/platform/goldfish/goldfish_pipe.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)

Doesn't apply to my char-misc tree anymore due to other changes in the
driver, can you rebase and resend?

thanks,

greg k-h