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Now that all data is transferred via the FIFO (ti_buf) there is no need to track the source buffer being used for the data transfer. This also eliminates the need for a separate subsection for PDMA state migration. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20210304221103.6369-30-mark.cave-ayland@ilande.co.uk>