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Thu, 10 Sep 2026 06:26:55 -0700 (PDT) Received: from localhost ([2c0f:3d00:6be:8900:ce5e:9212:ea4b:f30]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c260d6e1c93sm912526366b.63.2026.09.10.06.26.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Sep 2026 06:26:53 -0700 (PDT) Date: Thu, 10 Sep 2026 16:26:49 +0300 From: Dan Carpenter To: phucduc.bui@gmail.com Cc: Mark Brown , AngeloGioacchino Del Regno , Liam Girdwood , Matthias Brugger , Jaroslav Kysela , Takashi Iwai , Cezary Rojewski , Cyril Chao , Kuninori Morimoto , cassiogabrielcontato@gmail.com, linux-sound@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 11/13] ASoC: mediatek: mt8189: Validate sysclk frequency Message-ID: References: <20260910125742.150902-1-phucduc.bui@gmail.com> <20260910125742.150902-12-phucduc.bui@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260910125742.150902-12-phucduc.bui@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260910_142657_670163_92D35A18 X-CRM114-Status: GOOD ( 15.74 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Thu, Sep 10, 2026 at 07:57:40PM +0700, phucduc.bui@gmail.com wrote: > From: bui duc phuc > > mtk_dai_i2s_set_sysclk() accepts zero or negative frequencies. ^^^^^^^^^^^^^^^^^^^^ It's unsigned int so it can't be negative. regards, dan carpenter > Reject invalid frequencies before configuring the I2S clock. > > Fixes: 7eb153585598 ("ASoC: mediatek: mt8189: add platform driver") > Signed-off-by: bui duc phuc > --- > sound/soc/mediatek/mt8189/mt8189-dai-i2s.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/sound/soc/mediatek/mt8189/mt8189-dai-i2s.c b/sound/soc/mediatek/mt8189/mt8189-dai-i2s.c > index f20dbb410223..ca7d786cdeff 100644 > --- a/sound/soc/mediatek/mt8189/mt8189-dai-i2s.c > +++ b/sound/soc/mediatek/mt8189/mt8189-dai-i2s.c > @@ -1286,6 +1286,9 @@ static int mtk_dai_i2s_set_sysclk(struct snd_soc_dai *dai, > dir != SND_SOC_CLOCK_OUT) > return -EINVAL; > > + if (freq <= 0) > + return -EINVAL; > + > i2s_priv = afe_priv->dai_priv[dai->id]; > if (!i2s_priv) > return -EINVAL; > -- > 2.43.0