iio: adc: ti-adc161s626: use DMA-safe memory for spi_read()

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Add a DMA-safe buffer and use it for spi_read() instead of a stack
memory. All SPI buffers must be DMA-safe.

Since we only need up to 3 bytes, we just use a u8[] instead of __be16
and __be32 and change the conversion functions appropriately.

Fixes: 4d671b71be ("iio: adc: ti-adc161s626: add support for TI 1-channel differential ADCs")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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David Lechner 2026-03-14 18:13:32 -05:00 • committed by Jonathan Cameron

parent 24869650df

commit 768461517a

1 changed files with 8 additions and 12 deletions

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drivers/iio/adc/ti-adc161s626.c

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