Commit b790f210 authored Apr 25, 2014 by Michael Welling Committed by Greg Kroah-Hartman May 03, 2014

tty: serial: 8250_core.c Bug fix for Exar chips.



The sleep function was updated to put the serial port to sleep only when necessary.
This appears to resolve the errant behavior of the driver as described in
Kernel Bug 61961 – "My Exar Corp. XR17C/D152 Dual PCI UART modem does not
work with 3.8.0".

Signed-off-by: Michael Welling <mwelling@ieee.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent d1db0eea

drivers/tty/serial/8250/8250_core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -555,7 +555,7 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep)
		*/
		if ((p->port.type == PORT_XR17V35X) \|\|
		(p->port.type == PORT_XR17D15X)) {
		serial_out(p, UART_EXAR_SLEEP, 0xff);
		serial_out(p, UART_EXAR_SLEEP, sleep ? 0xff : 0);
		return;
		}