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Mon, 06 Apr 2026 02:53:31 -0700 (PDT) Received: from localhost.localdomain ([103.129.135.44]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82cf9ca1f28sm14214369b3a.57.2026.04.06.02.53.28 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 06 Apr 2026 02:53:30 -0700 (PDT) From: Shuvam Pandey To: Jonathan Cameron , David Lechner Cc: =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Shuvam Pandey Subject: [PATCH] iio: adc: nxp-sar-adc: zero-initialize dma_slave_config Date: Mon, 6 Apr 2026 15:38:24 +0545 Message-ID: <20260406095324.99671-1-shuvampandey1@gmail.com> X-Mailer: git-send-email 2.50.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" nxp_sar_adc_start_cyclic_dma() only fills the RX-side members of dma_slave_config before passing it to dmaengine_slave_config(). Zero-initialize the structure so unused members do not contain stack garbage. Some DMA engines consult optional dma_slave_config fields, so leaving them uninitialized can cause DMA setup failures. Fixes: 4434072a893e ("iio: adc: Add the NXP SAR ADC support for the s32g2/3= platforms") Signed-off-by: Shuvam Pandey Reviewed-by: David Lechner --- drivers/iio/adc/nxp-sar-adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/nxp-sar-adc.c b/drivers/iio/adc/nxp-sar-adc.c index 9efa883c277d..7d7b5a580167 100644 --- a/drivers/iio/adc/nxp-sar-adc.c +++ b/drivers/iio/adc/nxp-sar-adc.c @@ -659,7 +659,7 @@ static void nxp_sar_adc_dma_cb(void *data) static int nxp_sar_adc_start_cyclic_dma(struct iio_dev *indio_dev) { struct nxp_sar_adc *info =3D iio_priv(indio_dev); - struct dma_slave_config config; + struct dma_slave_config config =3D {}; struct dma_async_tx_descriptor *desc; int ret; =20 --=20 2.50.0