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: Greg Kroah-Hartman <gregkh@xxxxxxx>
CC: Alan Cox <alan@xxxxxxxxxxxxxxx>
CC: linux-serial@xxxxxxxxxxxxxxx
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
drivers/tty/serial/8250.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/8250.c b/drivers/tty/serial/8250.c
index 7f50999..fc5e9ac 100644
--- a/drivers/tty/serial/8250.c
+++ b/drivers/tty/serial/8250.c
@@ -2081,8 +2081,8 @@ 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;
}
--
1.7.4.1
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