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b46e1a0bff
The driver currently passes a stack-allocated buffer to spi_write(), which is incompatible with DMA on systems with CONFIG_VMAP_STACK enabled. Move the transfer buffer into the driver's private data structure to ensure it is DMA-safe. Since this shared buffer now requires serialization, this change depends on the previous commit which migrated the driver to the hwmon 'with_info' API. While moving the logic, also: - Corrected the sign extension for 14-bit data by casting to s16. - Scaled the output to millivolts (2500mV full scale ) to comply with the hwmon ABI. Signed-off-by: Tabrez Ahmed <tabreztalks@gmail.com> Link: https://lore.kernel.org/r/20260502020844.110038-4-tabreztalks@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
231 lines
5.6 KiB
231 lines
5.6 KiB