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

iio: adc: stm32-adc: Fix race in installing chained IRQ handler

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 e8ad595064f6ebd5d2d1a5d5d7ebe0efce623091 Mon Sep 17 00:00:00 2001 From: Chen Ni nichen@iscas.ac.cn Date: Thu, 15 May 2025 16:31:01 +0800 Subject: iio: adc: stm32-adc: Fix race in installing chained IRQ handler MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

Fix a race where a pending interrupt could be received and the handler called before the handler's data has been setup, by converting to irq_set_chained_handler_and_data().

Fixes: 1add69880240 ("iio: adc: Add support for STM32 ADC core") Signed-off-by: Chen Ni nichen@iscas.ac.cn Reviewed-by: Nuno Sá nuno.sa@analog.com Tested-by: Fabrice Gasnier fabrice.gasnier@foss.st.com Reviewed-by: Fabrice Gasnier fabrice.gasnier@foss.st.com Link: https://patch.msgid.link/20250515083101.3811350-1-nichen@iscas.ac.cn Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- drivers/iio/adc/stm32-adc-core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c index bd3458965bff..21c04a98b3b6 100644 --- a/drivers/iio/adc/stm32-adc-core.c +++ b/drivers/iio/adc/stm32-adc-core.c @@ -430,10 +430,9 @@ static int stm32_adc_irq_probe(struct platform_device *pdev, return -ENOMEM; }

- for (i = 0; i < priv->cfg->num_irqs; i++) { - irq_set_chained_handler(priv->irq[i], stm32_adc_irq_handler); - irq_set_handler_data(priv->irq[i], priv); - } + for (i = 0; i < priv->cfg->num_irqs; i++) + irq_set_chained_handler_and_data(priv->irq[i], + stm32_adc_irq_handler, priv);

return 0; }