linux-kernel - Re: [PATCH] ASoC: qcom: q6dsp: Fix an off-by-one in q6adm_alloc

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Date:   Thu, 21 Jul 2022 13:32:03 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Banajit Goswami <bgoswami@...eaurora.org>,
        alsa-devel@...a-project.org,
        Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
Subject: Re: [PATCH] ASoC: qcom: q6dsp: Fix an off-by-one in
 q6adm_alloc_copp()

On Thu, Jul 21, 2022 at 01:00:42PM +0300, Dan Carpenter wrote:
> sound/soc/qcom/qdsp6/q6adm.c:220 q6adm_alloc_copp() warn: impossible find_next_bit condition
> 
> I'll probably try to make this check more generic

Attached is my first draft generic version.  There are other ways I
could have written this, but I'll test my first draft and see what that
looks like.

sound/soc/qcom/qdsp6/q6adm.c:220 q6adm_alloc_copp() warn: potential off by one check 'find_first_zero_bit()'

regards,
dan carpenter


View attachment "check_off_by_one_capped_return.c" of type "text/x-csrc" (1585 bytes)