David Lechner c456108605 iio: temperature: maxim_thermocouple: use DMA-safe buffer for spi_read() ...

[ Upstream commit ae5bc07ec9 ]

Replace using stack-allocated buffers with a DMA-safe buffer for use
with spi_read(). This allows the driver to be safely used with
DMA-enabled SPI controllers.

The buffer array is also converted to a struct with a union to make the
usage of the memory in the buffer more clear and ensure proper alignment.

Fixes: 1f25ca11d8 ("iio: temperature: add support for Maxim thermocouple chips")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250721-iio-use-more-iio_declare_buffer_with_ts-3-v2-1-0c68d41ccf6c@baylibre.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ iio_push_to_buffers_with_ts() => iio_push_to_buffers_with_timestamp() ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-08-28 16:31:10 +02:00

..

hid-sensor-temperature.c

…

iqs620at-temp.c

…

Kconfig

…

ltc2983.c

…

Makefile

…

max30208.c

…

max31856.c

…

max31865.c

…

maxim_thermocouple.c

iio: temperature: maxim_thermocouple: use DMA-safe buffer for spi_read()

2025-08-28 16:31:10 +02:00

mcp9600.c

…

mlx90614.c

…

mlx90632.c

…

mlx90635.c

…

tmp006.c

…

tmp007.c

…

tmp117.c

…

tsys01.c

…

tsys02d.c

…