lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

8250: ratelimit LSR safety check engaged warning.

Browse Source 
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 <alan@linux.intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Konrad Rzeszutek Wilk
2011-09-26 09:14:34 -04:00
committed by Greg Kroah-Hartman
parent cf16807b61
commit 7808a4c485
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/tty/serial/8250.c
View File

@@ -2055,7 +2055,7 @@ static int serial8250_startup(struct uart_port *port)
*/ */
if (!(up->port.flags & UPF_BUGGY_UART) && if (!(up->port.flags & UPF_BUGGY_UART) &&
(serial_inp(up, UART_LSR) == 0xff)) { (serial_inp(up, UART_LSR) == 0xff)) {
printk(KERN_INFO "ttyS%d: LSR safety check engaged!\n", printk_ratelimited(KERN_INFO "ttyS%d: LSR safety check engaged!\n",
serial_index(&up->port)); serial_index(&up->port));
return -ENODEV; return -ENODEV;
} }