linux-kernel - Re: [PATCH] fsldma: add support to 36-bit physical address

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Message-Id: <877FD0B5-19A7-4A16-831E-369B80B104EA@kernel.crashing.org>
Date:	Tue, 21 Sep 2010 07:55:22 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Li Yang <leoli@...escale.com>
Cc:	dan.j.williams@...el.com, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fsldma: add support to 36-bit physical address


On Sep 21, 2010, at 5:57 AM, Li Yang wrote:

> Signed-off-by: Li Yang <leoli@...escale.com>
> ---

We really should have a sentence about how or why this works to address 36-bit addressing.

> drivers/dma/fsldma.c |    3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
> index cea08be..9163552 100644
> --- a/drivers/dma/fsldma.c
> +++ b/drivers/dma/fsldma.c
> @@ -1,7 +1,7 @@
> /*
>  * Freescale MPC85xx, MPC83xx DMA Engine support
>  *
> - * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
> + * Copyright (C) 2007-2009 Freescale Semiconductor, Inc. All rights reserved.
>  *
>  * Author:
>  *   Zhang Wei <wei.zhang@...escale.com>, Jul 2007
> @@ -1338,6 +1338,7 @@ static int __devinit fsldma_of_probe(struct platform_device *op,
> 	fdev->common.device_control = fsl_dma_device_control;
> 	fdev->common.dev = &op->dev;
> 
> +	dma_set_mask(&op->dev, DMA_BIT_MASK(36));
> 	dev_set_drvdata(&op->dev, fdev);
> 
> 	/*
> -- 
> 1.6.6-rc1.GIT
> 
> 
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@...ts.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

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