From mboxrd@z Thu Jan 1 00:00:00 1970 From: gregkh@linuxfoundation.org (gregkh at linuxfoundation.org) Date: Tue, 20 Mar 2018 10:32:08 +0100 Subject: [PATCH] serial: mvebu-uart: fix tx lost characters In-Reply-To: <3B588D51285A4A4D8D39C94212E07826278BDF@SPQCMBX02.exfo.com> References: <3B588D51285A4A4D8D39C94212E078262748ED@SPQCMBX02.exfo.com> <20180315165516.GA9519@kroah.com> <3B588D51285A4A4D8D39C94212E078262787C0@SPQCMBX02.exfo.com> <20180315212137.57ca7c65@xps13> <3B588D51285A4A4D8D39C94212E07826278BDF@SPQCMBX02.exfo.com> Message-ID: <20180320093208.GA22194@kroah.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Mar 16, 2018 at 01:45:32PM +0000, Gabriel Matni wrote: > From: Gabriel Matni > > Fixes missing characters on kernel console at low baud rates (i.e.9600). > The driver should poll TX_RDY or TX_FIFO_EMP instead of TX_EMP to ensure > that the transmitter holding register (THR) is ready to receive a new byte. > > TX_EMP tells us when it is possible to send a break sequence via > SND_BRK_SEQ. While this also indicates that both the THR and the TSR are > empty, it does not guarantee that a new byte can be written just yet. > > Fixes: 30530791a7a0 ("serial: mvebu-uart: initial support for Armada-3700 > serial port") Can all be on one line. And should this go to the stable trees? > Reviewed-by: Miquel Raynal > Acked-by: Gregory CLEMENT > Signed-off-by: Gabriel Matni Trailing whitespace? > > --- > drivers/tty/serial/mvebu-uart.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) What version of this patch is this? How do I know which to accept? Please properly version your patch, and include the changes below the --- line like the documentation says to do. thanks, greg k-h