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authorMichael Welling <mwelling@ieee.org>2014-04-26 00:27:48 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-03 22:13:05 (GMT)
commitb790f210fe8423eff881b2a8a93ba5dbc45534d0 (patch)
tree995bf2b7e1afb7c0704ea85485e9363753ddee3b /drivers/tty
parentd1db0eea852497762cab43b905b879dfcd3b8987 (diff)
downloadlinux-b790f210fe8423eff881b2a8a93ba5dbc45534d0.tar.xz
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>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 0e1bf88..2d4bd39 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -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;
}