linux-kernel - [PATCH 07/28] iio: adc: stm32-adc: use = { } instead of memset()

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Message-Id: <20250611-iio-zero-init-stack-with-instead-of-memset-v1-7-ebb2d0a24302@baylibre.com>
Date: Wed, 11 Jun 2025 17:38:59 -0500
From: David Lechner <dlechner@...libre.com>
To: Michael Hennerich <michael.hennerich@...log.com>, 
 Lars-Peter Clausen <lars@...afoo.de>, Jonathan Cameron <jic23@...nel.org>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Andy Shevchenko <andy@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Heiko Stuebner <heiko@...ech.de>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Francesco Dolcini <francesco@...cini.it>, 
 João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>, 
 Leonard Göhrs <l.goehrs@...gutronix.de>, 
 kernel@...gutronix.de, Oleksij Rempel <o.rempel@...gutronix.de>, 
 Roan van Dijk <roan@...tonic.nl>, 
 Tomasz Duszynski <tomasz.duszynski@...akon.com>, 
 Jacopo Mondi <jacopo@...ndi.org>, 
 Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@....com>, 
 Mudit Sharma <muditsharma.info@...il.com>, 
 Javier Carrasco <javier.carrasco.cruz@...il.com>, 
 Ondřej Jirman <megi@....cz>, 
 Andreas Klinger <ak@...klinger.de>, 
 Petre Rodan <petre.rodan@...dimension.ro>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 David Lechner <dlechner@...libre.com>
Subject: [PATCH 07/28] iio: adc: stm32-adc: use = { } instead of memset()

Use { } instead of memset() to zero-initialize stack memory to simplify
the code.

Signed-off-by: David Lechner <dlechner@...libre.com>
---
 drivers/iio/adc/stm32-adc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index e84babf433853977b77aa283025f446353510a21..588c69e175f5129030eef9ebfe0eabb6412b1893 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -2470,7 +2470,7 @@ static int stm32_adc_chan_fw_init(struct iio_dev *indio_dev, bool timestamping)
 static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev)
 {
 	struct stm32_adc *adc = iio_priv(indio_dev);
-	struct dma_slave_config config;
+	struct dma_slave_config config = { };
 	int ret;
 
 	adc->dma_chan = dma_request_chan(dev, "rx");
@@ -2494,7 +2494,6 @@ static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev)
 	}
 
 	/* Configure DMA channel to read data register */
-	memset(&config, 0, sizeof(config));
 	config.src_addr = (dma_addr_t)adc->common->phys_base;
 	config.src_addr += adc->offset + adc->cfg->regs->dr;
 	config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;

-- 
2.43.0