linux-kernel - Re: [RFC patch] DMA engine/Langwell: process pending descriptors

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Date:	Mon, 08 Aug 2011 22:58:06 +0530
From:	"Koul, Vinod" <vinod.koul@...el.com>
To:	Hillf Danton <dhillf@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [RFC patch] DMA engine/Langwell: process pending descriptors

On Wed, 2011-07-27 at 21:24 +0800, Hillf Danton wrote:
> Descriptors could be added onto the queue list, though pending descriptors are
> checked in intel_mid_dma_issue_pending(), they are not processed by scanning
> the queue list.
> In this work scanning the queue list is added in midc_scan_descriptors().
> 
> Signed-off-by: Hillf Danton <dhillf@...il.com>
> ---
>  drivers/dma/intel_mid_dma.c |    5 ++++-
>  1 files changed, 4 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/dma/intel_mid_dma.c b/drivers/dma/intel_mid_dma.c
> index f653517..a176fb9 100644
> --- a/drivers/dma/intel_mid_dma.c
> +++ b/drivers/dma/intel_mid_dma.c
> @@ -338,8 +338,11 @@ static void midc_scan_descriptors(struct
> middma_device *mid,
Here again!!!

Pls fix your mailer to not screw patches :(
Also when sending a bunch of patches, ensure you send as a patch series

>  		if (desc->status == DMA_IN_PROGRESS)
>  			midc_descriptor_complete(midc, desc);
>  	}
> -	return;
> +	list_for_each_entry_safe(desc, _desc, &midc->queue, desc_node) {
> +		if (desc->status == DMA_IN_PROGRESS)
> +			midc_descriptor_complete(midc, desc);
>  	}
> +}
>  /**
>   * midc_lli_fill_sg -		Helper function to convert
>   *				SG list to Linked List Items.
> --
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-- 
~Vinod

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