On Fri, May 08, 2020 at 04:29:37PM +0300, Serge Semin wrote:

Since the TX and RX DMA-slave config structures are declared on the
stack and only a part of their fields is initialized further in the
prepare Tx/Rx methods, the next dmaengine_slave_config() calls may
randomly perform an incorrect DMA channels setup depending on the
stack initial values. Lets fix this by zeroing the config-structures
before using them.

Already in spi/for-next.

-- 
With Best Regards,
Andy Shevchenko