On Tue, Sep 29, 2020 at 01:46:59AM +0530, Naresh Kamboju wrote:

On Fri, 18 Sep 2020 at 07:51, Sasha Levin [off-list ref] wrote:

quoted

From: Raviteja Narayanam <redacted>

[ Upstream commit 42e11948ddf68b9f799cad8c0ddeab0a39da33e8 ]

On some platforms, the log is corrupted while console is being
registered. It is observed that when set_termios is called, there
are still some bytes in the FIFO to be transmitted.

So, wait for tx_empty inside cdns_uart_console_setup before calling
set_termios.

Signed-off-by: Raviteja Narayanam <redacted>
Reviewed-by: Shubhrajyoti Datta <redacted>
Link: https://lore.kernel.org/r/1586413563-29125-2-git-send-email-raviteja.narayanam@xilinx.com (local)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

stable rc branch 4.4 arm64 build broken.

../drivers/tty/serial/xilinx_uartps.c: In function ‘cdns_uart_console_setup’:
../drivers/tty/serial/xilinx_uartps.c:1170:40: error: ‘TX_TIMEOUT’
undeclared (first use in this function)
1170 |  time_out = jiffies + usecs_to_jiffies(TX_TIMEOUT);
                                                                     ^~~~~~~~~~
Reported-by: Naresh Kamboju <redacted>

Dropped, thanks!

-- 
Thanks,
Sasha

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