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This entry is dedicated to synchronous transmissions done by drivers without async hook. Make this clearer that this is not a work that any driver can use by at least prefixing it with "sync_". While at it, let's enhance the comment explaining why we choose one or the other. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20220519150516.443078-3-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>