linux-kernel - Re: [PATCH] ASoC: qcom: common: Fix NULL pointer in of parser

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Date:   Tue, 18 Jun 2019 09:12:58 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Patrick Lai <plai@...eaurora.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] ASoC: qcom: common: Fix NULL pointer in of parser

Thanks Bjorn for this patch.

On 18/06/2019 06:28, Bjorn Andersson wrote:
> A snd_soc_dai_link_component is allocated and associated with the first
> link, so when the code tries to assign the of_node of the second link's
> "cpu" member it dereferences a NULL pointer.
> 
> Fix this by moving the allocation and assignement of
> snd_soc_dai_link_components into the loop, giving us one pair per link.
> 
> Fixes: 1e36ea360ab9 ("ASoC: qcom: common: use modern dai_link style")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>

I think the original patch did not realize that there are multiple links!

Acked-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>