patch "iio: adc: nxp-sar-adc: zero-initialize dma_slave_config" added to char-misc-linus

patch "iio: adc: nxp-sar-adc: zero-initialize dma_slave_config" added to char-misc-linus

[gregkh]

This is a note to let you know that I've just added the patch titled

    iio: adc: nxp-sar-adc: zero-initialize dma_slave_config

to my char-misc git tree which can be found at
    git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.

If you have any questions about this process, please let me know.


From 8ce176501f836634f9c0419c0820140f968e9dc5 Mon Sep 17 00:00:00 2001
From: Shuvam Pandey <shuvampandey1@gmail.com>
Date: Mon, 6 Apr 2026 15:38:24 +0545
Subject: iio: adc: nxp-sar-adc: zero-initialize dma_slave_config

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 <shuvampandey1@gmail.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---
 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 1711cae7d872..8f4ed3db94f0 100644
--- a/drivers/iio/adc/nxp-sar-adc.c
+++ b/drivers/iio/adc/nxp-sar-adc.c
@@ -676,7 +676,7 @@ 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 = iio_priv(indio_dev);
-	struct dma_slave_config config;
+	struct dma_slave_config config = { };
 	struct dma_async_tx_descriptor *desc;
 	int ret;
 
-- 
2.54.0