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Date: Mon, 15 Aug 2022 14:42:49 +0300
From: Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [PATCH] smatch_allocations: Give a hint about
 dma_alloc_(attrs|coherent)
Message-ID: <20220815114249.GN3438@kadam>
References: <c8d97ff256eee5ad0bf1acbd06d9d94fa16771dc.1660551505.git.christophe.jaillet@wanadoo.fr>
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To: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: smatch@vger.kernel.org

On Mon, Aug 15, 2022 at 10:18:31AM +0200, Christophe JAILLET wrote:
> In recent kernel, dma_alloc_attrs() and dma_alloc_coherent() zero the
> allocated memory.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> This was not the case in older kernel, so maybe it is better not to state
> that the memory is zeroed.
> 
> (I've not seen where/how this .zeroed information was used)

This code is aspirational.  I keep on creating lists of allocation
functions but hopefully it can all be pulled into one central location.

regards,
dan carpenter