Hi Greg, > From: Greg KH, Sent: Wednesday, June 9, 2021 9:37 PM > > 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? We should be using dmaengine_terminate_all() instead of this for v4.4.x. However, dmaengine_terminate_all() is deprecated in mainline now. > 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. I got it. Best regards, Yoshihiro Shimoda
