linux-kernel - [PATCH 03/28] iio: adc: dln2-adc: use = { } instead of memset()

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Message-Id: <20250611-iio-zero-init-stack-with-instead-of-memset-v1-3-ebb2d0a24302@baylibre.com>
Date: Wed, 11 Jun 2025 17:38:55 -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 03/28] iio: adc: dln2-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/dln2-adc.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/iio/adc/dln2-adc.c b/drivers/iio/adc/dln2-adc.c
index 9dbd2c87938c23d91fc93269763263fe73ed5206..5aea7644780f8b32ca6ed80b79afd07220d46a5c 100644
--- a/drivers/iio/adc/dln2-adc.c
+++ b/drivers/iio/adc/dln2-adc.c
@@ -467,7 +467,7 @@ static irqreturn_t dln2_adc_trigger_h(int irq, void *p)
 	struct {
 		__le16 values[DLN2_ADC_MAX_CHANNELS];
 		aligned_s64 timestamp_space;
-	} data;
+	} data = { };
 	struct dln2_adc_get_all_vals dev_data;
 	struct dln2_adc *dln2 = iio_priv(indio_dev);
 	const struct dln2_adc_demux_table *t;
@@ -479,8 +479,6 @@ static irqreturn_t dln2_adc_trigger_h(int irq, void *p)
 	if (ret < 0)
 		goto done;
 
-	memset(&data, 0, sizeof(data));
-
 	/* Demux operation */
 	for (i = 0; i < dln2->demux_count; ++i) {
 		t = &dln2->demux[i];

-- 
2.43.0