iio: adc: ad799x: use a static buffer for scan data

Currently, rx_buf is dynamically allocated using kmalloc() every time
ad799x_update_scan_mode() is called. This can lead to memory leaks if
the scan mask is updated multiple times.

Drop the dynamic allocation and replace it with a static buffer at the
end of the state structure using IIO_DECLARE_BUFFER_WITH_TS().
This eliminates the allocation overhead, prevents leaks, and removes
the need for manual kfree() on driver removal.

Suggested-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Archit Anant <architanant5@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

0 files changed, 0 insertions, 0 deletions