linux-kernel - Re: [PATCH] of: restricted dma: Fix condition for rmem init

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Date:   Fri, 17 Sep 2021 15:58:11 -0500
From:   Rob Herring <robh@...nel.org>
To:     David Brazdil <dbrazdil@...gle.com>
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Frank Rowand <frowand.list@...il.com>,
        Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] of: restricted dma: Fix condition for rmem init

On Fri, 17 Sep 2021 14:14:23 +0100, David Brazdil wrote:
> of_dma_set_restricted_buffer fails to handle negative return values from
> of_property_count_elems_of_size, e.g. when the property does not exist.
> This results in an attempt to assign a non-existent reserved memory
> region to the device and a warning being printed. Fix the condition to
> take negative values into account.
> 
> Fixes: f3cfd136aef0 ("of: restricted dma: Don't fail device probe on
> rmem init failure")
> Cc: Will Deacon <will@...nel.org>
> Signed-off-by: David Brazdil <dbrazdil@...gle.com>
> ---
>  drivers/of/device.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 

Applied, thanks!