linux-kernel - Re: [PATCH] dmaengine/amba-pl08x : reset phychan

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Message-ID: <4F9626AF.9030203@st.com>
Date:	Tue, 24 Apr 2012 09:36:07 +0530
From:	Viresh Kumar <viresh.kumar@...com>
To:	Vinod Koul <vinod.koul@...ux.intel.com>
Cc:	"ciminaghi@...dd.com" <ciminaghi@...dd.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"dan.j.williams@...el.com" <dan.j.williams@...el.com>,
	"pgeninatti@...t-in.com" <pgeninatti@...t-in.com>,
	"acolosimo@...t-in.com" <acolosimo@...t-in.com>,
	"alarosa@...nintellect.eu" <alarosa@...nintellect.eu>
Subject: Re: [PATCH] dmaengine/amba-pl08x : reset phychan_hold on terminate
 all

On 4/23/2012 6:12 PM, Vinod Koul wrote:
> On Thu, 2012-04-19 at 12:20 +0200, ciminaghi@...dd.com wrote:
>> > From: Davide Ciminaghi <ciminaghi@...dd.com>
>> > 
>> > When a client calls pl08x_control with DMA_TERMINATE_ALL, it is correct
>> > to terminate and release the phy channel currently in use (if one is in use),
>> > but the phychan_hold counter must also be reset (otherwise it could get
>> > trapped in an unbalanced state).
>> > 
>> > Signed-off-by: Davide Ciminaghi <ciminaghi@...dd.com>
>> > ---
>> >  drivers/dma/amba-pl08x.c |    1 +
>> >  1 files changed, 1 insertions(+), 0 deletions(-)
>> > 
>> > diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
>> > index c301a8e..3d704ab 100644
>> > --- a/drivers/dma/amba-pl08x.c
>> > +++ b/drivers/dma/amba-pl08x.c
>> > @@ -1429,6 +1429,7 @@ static int pl08x_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
>> >  			 * signal
>> >  			 */
>> >  			release_phy_channel(plchan);
>> > +			plchan->phychan_hold = 0;
>> >  		}
>> >  		/* Dequeue jobs and free LLIs */
>> >  		if (plchan->at) {
> Linus, Viresh... Any tested-by for this before I apply to fixes.

Looks good.

Reviewed-by: Viresh Kumar <viresh.kumar@...com>

-- 
viresh
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