linux-kernel - Re: [PATCH] arm64/dma-mapping: Fix null-pointer check

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Message-ID: <20170612203620.yrdb3pnrm6xt6nub@codeaurora.org>
Date:   Mon, 12 Jun 2017 13:36:20 -0700
From:   Olav Haugan <ohaugan@...eaurora.org>
To:     Russell King - ARM Linux <linux@...linux.org.uk>
Cc:     catalin.marinas@....com, will.deacon@....com, robin.murphy@....com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64/dma-mapping: Fix null-pointer check

On 17-06-10 23:03:54, Russell King - ARM Linux wrote:
> On Sat, Jun 10, 2017 at 12:41:10PM -0700, Olav Haugan wrote:
> > @@ -149,6 +140,11 @@ static void *__dma_alloc(struct device *dev, size_t size,
> >  	bool coherent = is_device_dma_coherent(dev);
>                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
> This re-introduces an instance that you say you're getting rid of...
> 

The ARM64 version of is_device_dma_coherent() checks for !dev
already...But anyway I will completely remove the !dev checks in the
alloc/free functions since as Catalin pointed out it is coverted
elsewhere.

-- 
.Olav

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