5.4-stable review patch. If anyone has any objections, please let me know.
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From: Chen Ni nichen@iscas.ac.cn
commit e8ad595064f6ebd5d2d1a5d5d7ebe0efce623091 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/stm32-adc-core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)
--- a/drivers/iio/adc/stm32-adc-core.c +++ b/drivers/iio/adc/stm32-adc-core.c @@ -393,10 +393,9 @@ static int stm32_adc_irq_probe(struct pl 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; }