Messages in this thread Patch in this message | | | From | Sudhir Sreedharan <> | Subject | [PATCH] tty: serial: 8250_core: Do not call set_sleep for console port | Date | Thu, 9 Oct 2014 19:15:26 +0530 |
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In ST16650V2 based serial uarts, while initalizing the PM state, LCR registers are being initialized to 0 in serial8250_set_sleep(). If console port is already initialized and being used, this will throws garbage in the console.
Signed-off-by: Sudhir Sreedharan <ssreedharan@mvista.com> --- drivers/tty/serial/8250/8250_core.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index ca5cfdc..994aa25 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -2618,6 +2618,9 @@ void serial8250_do_pm(struct uart_port *port, unsigned int state, { struct uart_8250_port *p = up_to_u8250p(port); + if (port->cons && (port->cons->flags & CON_ENABLED) && (state == 0)) + return; + serial8250_set_sleep(p, state != 0); } EXPORT_SYMBOL(serial8250_do_pm); -- 1.7.0.1
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