[PATCH 1/2] 8250: ratelimit LSR safety check engaged warning.
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From: Konrad Rzeszutek Wilk <hidden>
Date: 2011-09-26 13:15:00
Also in:
lkml
Subsystem:
8250/16?50 (and clone uarts) serial driver, the rest, tty layer and serial drivers · Maintainers:
Greg Kroah-Hartman, Linus Torvalds, Jiri Slaby
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@suse.de> CC: Alan Cox <redacted> CC: linux-serial@vger.kernel.org Signed-off-by: Konrad Rzeszutek Wilk <redacted> --- 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; }
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1.7.4.1