6.6-stable review patch. If anyone has any objections, please let me know.
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From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit f79aeb6c631b57395f37acbfbe59727e355a714c ]
The trick of using __aligned(IIO_DMA_MINALIGN) ensures that there is no overlap between buffers used for DMA and those used for driver state storage that are before the marking. It doesn't ensure anything above state variables found after the marking. Hence move this particular bit of state earlier in the structure.
Fixes: 10897f34309b ("iio: temp: maxim_thermocouple: Fix alignment for DMA safety") Reviewed-by: David Lechner dlechner@baylibre.com Link: https://patch.msgid.link/20250413103443.2420727-14-jic23@kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/temperature/maxim_thermocouple.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c index c28a7a6dea5f1..555a61e2f3fdd 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -121,9 +121,9 @@ static const struct maxim_thermocouple_chip maxim_thermocouple_chips[] = { struct maxim_thermocouple_data { struct spi_device *spi; const struct maxim_thermocouple_chip *chip; + char tc_type;
u8 buffer[16] __aligned(IIO_DMA_MINALIGN); - char tc_type; };
static int maxim_thermocouple_read(struct maxim_thermocouple_data *data,