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Wed, 30 Sep 2026 23:51:43 -0700 (PDT) Date: Thu, 1 Oct 2026 09:51:39 +0300 From: Dan Carpenter To: Val Packett Cc: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Luca Weiss , Charles Keepax , Kuninori Morimoto , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] ASoC: codecs: aw88261: small cleanup in aw88261_set_tdm_slot() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailer: git-send-email haha only kidding This code triggers a Smatch false positive: sound/soc/codecs/aw88261.c:858 aw88261_set_tdm_slot() error: uninitialized symbol 'chan'. This would only happen if both the tx and rx masks were zero which is a nonsense scenario and reviewing the callers shows that it never happens. However, if the rx_mask is zero then we're comparing the mask from RX against the chan from TX which is confusing: if ((rx_mask & ~BIT(chan)) != 0) { ^^ rx ^^^^ tx chan Of course, in that case the condition is going to be false because the rx_mask is zero. So it's fine. But it would be more clear to move the condition inside the if statement and it silences the static checker warning as well. Signed-off-by: Dan Carpenter --- >From code review. Untested. sound/soc/codecs/aw88261.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/sound/soc/codecs/aw88261.c b/sound/soc/codecs/aw88261.c index b8d06534bc8f..8671069f4c18 100644 --- a/sound/soc/codecs/aw88261.c +++ b/sound/soc/codecs/aw88261.c @@ -853,13 +853,13 @@ static int aw88261_set_tdm_slot(struct snd_soc_dai *dai, return -EINVAL; aw88261->rxl_slotvld_mask = chan << AW88261_I2S_RXL_SLOTVLD_START_BIT; - } - if ((rx_mask & ~BIT(chan)) != 0) { - if ((chan = __ffs(rx_mask & ~BIT(chan))) > 16) - return -EINVAL; + if ((rx_mask & ~BIT(chan)) != 0) { + if ((chan = __ffs(rx_mask & ~BIT(chan))) > 16) + return -EINVAL; - aw88261->rxr_slotvld_mask = chan << AW88261_I2S_RXR_SLOTVLD_START_BIT; + aw88261->rxr_slotvld_mask = chan << AW88261_I2S_RXR_SLOTVLD_START_BIT; + } } return 0; -- 2.53.0