From 7808a4c4853fa0203085cf2217e01823d9f0c70c Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Mon, 26 Sep 2011 09:14:34 -0400 Subject: [PATCH] 8250: ratelimit LSR safety check engaged warning. On my BIOSTAR TA890FXE the ttyS0 ends up spewing: [904682.485933] ttyS0: LSR safety check engaged! [904692.505895] ttyS0: LSR safety check engaged! [904702.525972] ttyS0: LSR safety check engaged! [904712.545967] ttyS0: LSR safety check engaged! [904722.566125] ttyS0: LSR safety check engaged! .. lets limit it so it won't be the only thing visible in the ring buffer. CC: Alan Cox Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c index 82ca71a..076e9c6 100644 --- a/drivers/tty/serial/8250.c +++ b/drivers/tty/serial/8250.c @@ -2055,8 +2055,8 @@ static int serial8250_startup(struct uart_port *port) */ if (!(up->port.flags & UPF_BUGGY_UART) && (serial_inp(up, UART_LSR) == 0xff)) { - printk(KERN_INFO "ttyS%d: LSR safety check engaged!\n", - serial_index(&up->port)); + printk_ratelimited(KERN_INFO "ttyS%d: LSR safety check engaged!\n", + serial_index(&up->port)); return -ENODEV; } -- 2.7.4