diff mbox

tty: serial: msm_serial: Remove duplicate call to msm_set_baud_rate

Message ID 1419259460-24142-1-git-send-email-pramod.gurav@smartplayin.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Pramod Gurav Dec. 22, 2014, 2:44 p.m. UTC
The function 'msm_set_baud_rate' is called twice while setting up
msm console. Once in msm_console_setup and next when uart_set_options
calls port->ops->set_termios ie. msm_set_termios().

Remove the duplicate call in msm_console_setup. Tested on IFC6410
console.

Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
---
 drivers/tty/serial/msm_serial.c |    1 -
 1 file changed, 1 deletion(-)

Comments

Stephen Boyd Dec. 30, 2014, 12:43 a.m. UTC | #1
On 12/22/2014 6:44 AM, Pramod Gurav wrote:
> The function 'msm_set_baud_rate' is called twice while setting up
> msm console. Once in msm_console_setup and next when uart_set_options
> calls port->ops->set_termios ie. msm_set_termios().
>
> Remove the duplicate call in msm_console_setup. Tested on IFC6410
> console.
>
> Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
> ---
>  drivers/tty/serial/msm_serial.c |    1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
> index dbc278d..4c4a250 100644
> --- a/drivers/tty/serial/msm_serial.c
> +++ b/drivers/tty/serial/msm_serial.c
> @@ -945,7 +945,6 @@ static int __init msm_console_setup(struct console *co, char *options)
>  
>  	if (baud < 300 || baud > 115200)
>  		baud = 115200;
> -	msm_set_baud_rate(port, baud);
>  
>  	msm_reset(port);
>  

There seems to be more stuff done in this console setup path that is
duplicated by the msm_set_termios() function. Can we clean it all up? I
would bet that the msm_reset() is there because we changed the buad rate
and so if we remove the baud rate setting we can remove the reset as
well (see commit a12f1b406f2d tty: serial: msm: Reset uartdm after baud
rate change, 2014-10-29). We might as well dump the
CR_CMD_PROTECTION_EN  and CR_TX_ENABLE thing as well given that we do
the same in msm_set_baud_rate() already. And maybe we can even get rid
of the baud rate capping and forced 8N1 setting that goes on here too.
Just let the user do what they want?
diff mbox

Patch

diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index dbc278d..4c4a250 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -945,7 +945,6 @@  static int __init msm_console_setup(struct console *co, char *options)
 
 	if (baud < 300 || baud > 115200)
 		baud = 115200;
-	msm_set_baud_rate(port, baud);
 
 	msm_reset(port);