linux-kernel - Re: [PATCH 2/2 v2] dma/amba-pl08x: add support for the Nomadik variant

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Message-ID: <4F864F1E.8030708@st.com>
Date:	Thu, 12 Apr 2012 09:12:22 +0530
From:	Viresh Kumar <viresh.kumar@...com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Vinod Koul <vinod.koul@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dan Williams <dan.j.williams@...el.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Russell King <linux@....linux.org.uk>,
	Alim Akhtar <alim.akhtar@...il.com>,
	Alessandro Rubini <rubini@...dd.com>
Subject: Re: [PATCH 2/2 v2] dma/amba-pl08x: add support for the Nomadik variant

On 4/12/2012 4:30 AM, Linus Walleij wrote:
> The Nomadik PL080 variant has some extra protection bits that
> may be set, so we need to check these bits to see if the
> channels are actually available for the DMAengine to use.
> 
> Cc: Russell King <linux@....linux.org.uk>
> Cc: Viresh Kumar <viresh.kumar@...com>
> Cc: Alim Akhtar <alim.akhtar@...il.com>
> Cc: Alessandro Rubini <rubini@...dd.com>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>

> diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
> @@ -1917,7 +1926,7 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
>  	}
>  
>  	/* Initialize physical channels */
> -	pl08x->phy_chans = kmalloc((vd->channels * sizeof(*pl08x->phy_chans)),
> +	pl08x->phy_chans = kzalloc((vd->channels * sizeof(*pl08x->phy_chans)),
>  			GFP_KERNEL);
>  	if (!pl08x->phy_chans) {
>  		dev_err(&adev->dev, "%s failed to allocate "
> @@ -1934,6 +1943,22 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
>  		spin_lock_init(&ch->lock);
>  		ch->serving = NULL;

I meant removing this one too. :)

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