On Wed, Jun 09, 2021 at 10:49:02AM +0900, Yoshihiro Shimoda wrote: > Stop dmaengine transfer in sci_stop_tx(). Otherwise, the following > message is possible output when system enters suspend and while > transferring data, because clearing TIE bit in SCSCR is not able to > stop any dmaengine transfer. > > sh-sci e6550000.serial: ttySC1: Unable to drain transmitter > > Note that this patch uses dmaengine_terminate_async() so that > we can apply this patch into longterm kernel v4.9.x or later. What should it be using instead of this? Don't worry about older kernels (you didn't cc: stable@xxxxxxxxxxxxxxx so I guess you don't either), get it right here and then we can deal with backports later. thanks, greg k-h
