On Sat, Jun 25, 2016 at 09:10:51AM -0700, Greg Kroah-Hartman wrote: > On Sat, Jun 25, 2016 at 09:09:39AM -0700, Greg Kroah-Hartman wrote: > > On Fri, Jun 24, 2016 at 04:59:14PM +0200, Geert Uytterhoeven wrote: > > > Make sure the transmitter and receiver are stopped when shutting down > > > the port, and related interrupts are disabled. > > > > > > Without this: > > > - New input data may be received into the RX FIFO, possibly > > > triggering a new RX DMA completion, > > > - Transfers will still be enabled on a subsequent startup of the UART, > > > before the UART's FIFOs have been reset, causing reading of stale > > > data. > > > > > > Inspired by a patch in the BSP by Koji Matsuoka > > > <koji.matsuoka.xm@xxxxxxxxxxx>. > > > > > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> > > > --- > > > v2: > > > - Do not clear clock source bits, since the serial console relies on > > > them, as reported by Shimoda-san. > > > > > > v1 was extracted from "[PATCH/RFC v3 0/4] serial: sh-sci: Add DT DMA > > > support". The issues with the serial console seen before on > > > r8a7740/armadillo and sh73a0/kzm9g seem to be gone. Changes after > > > resurrection: > > > - Write zero to also disable related interrupts, as suggested by > > > Laurent Pinchart, > > > - Enhanced patch description. > > > --- > > > drivers/tty/serial/sh-sci.c | 5 +++++ > > > 1 file changed, 5 insertions(+) > > > > This patch does not apply to my tree :( > > But I don't have access to my 2-factor token for about 24 hours, so my > tree will not be public until after then, sorry about that, I'll email > you when it gets synced up to kernel.org... It's synced now, sorry for the noise. greg k-h
