Re: [PATCHv3] driver: serial: prevent UART console idle on suspendwhile using "no_console_suspend"

From: Sourav Poddar
Date: Wed Apr 10 2013 - 01:27:33 EST


Hi Russell,
On Monday 08 April 2013 10:44 PM, Russell King - ARM Linux wrote:
On Fri, Apr 05, 2013 at 06:45:33PM +0530, Sourav Poddar wrote:
With dt boot, uart wakeup after suspend is non functional while using
"no_console_suspend" in the bootargs. With "no_console_suspend" used, we
should prevent the runtime suspend of the uart port which is getting used
as an console.

Cc: Santosh Shilimkar<santosh.shilimkar@xxxxxx>
Cc: Felipe Balbi<balbi@xxxxxx>
Cc: Rajendra nayak<rnayak@xxxxxx>
Tested on omap5430evm, omap4430sdp.

Signed-off-by: Sourav Poddar<sourav.poddar@xxxxxx>
---
v2->v3
Based on Kevin Hilman and Santosh Shilimkar comments, modified
serial core/driver layer to bypass runtime suspend
for console uart while using "no_console_suspend".

This patch is based on Santosh Shilimkar serial patch[1]
Rather than introducing this "port_is_console" thing, please move
uart_console() into the serial_core.h header file, making it an inline
function, and use that in omap-serial.c.

Remember to fix drivers/tty/serial/mpc52xx_uart.c as well for that change.
Thanks for the pointer. Will take care of your suggestions
in the next version.

~Sourav
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