[PATCH] serial/core: Initialize the console pm state

[Kevin Hilman]

On Sun, Sep 21, 2014 at 11:30 PM, Sudhir Sreedharan
<ssreedharan at mvista.com> wrote:
> For console devices having UART_CAP_SLEEP capability, the uart_pm_state has
> to be initialized to UART_PM_STATE_ON. Otherwise the LCR regiser values
> are reinitialized when uart_change_pm is called from uart_configure_port.
>
> Signed-off-by: Sudhir Sreedharan <ssreedharan at mvista.com>

Multiple boot failures on ARM[1] were bisected down to this patch.

How was this patch tested, and on which platforms?

Also, the changelog states that this should be done only for
UART_CAP_SLEEP, but the patch does it for every UART.

Greg, I suggest this patch be dropped from tty-next until it has been
better described and tested.

Kevin

[1] http://lists.linaro.org/pipermail/kernel-build-reports/2014-October/005550.html