linux-kernel - Re: [PATCH V3 2/2] dmaengine: tegra-adma: Add support for Tegra210 ADMA

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Message-ID: <562F42B1.30102@nvidia.com>
Date:	Tue, 27 Oct 2015 09:24:01 +0000
From:	Jon Hunter <jonathanh@...dia.com>
To:	Vinod Koul <vinod.koul@...el.com>
CC:	Laxman Dewangan <ldewangan@...dia.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>,
	"Alexandre Courbot" <gnurou@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, <dmaengine@...r.kernel.org>,
	<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V3 2/2] dmaengine: tegra-adma: Add support for Tegra210
 ADMA


On 27/10/15 02:10, Vinod Koul wrote:
> On Fri, Oct 16, 2015 at 08:35:19AM +0100, Jon Hunter wrote:
>> +static inline void tdma_ch_write(struct tegra_adma_chan *tdc,
>> +		u32 reg, u32 val)
> 
> Coding style issue here

Yes will correct.

>> +static int tegra_adma_alloc_chan_resources(struct dma_chan *dc)
>> +{
>> +	struct tegra_adma_chan *tdc = to_tegra_adma_chan(dc);
>> +	int ret;
>> +
>> +	ret = pm_runtime_get_sync(tdc2dev(tdc));
>> +	if (ret)
>> +		return ret;
> 
> pm_runtime_get_sync() return postive values on success too, so this can
> fail. This check should be for less than zero case

I stumbled upon that recently and will also fix up.

Cheers
Jon

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