[ARM] 4088/1: AT91: Unbalanced IRQ in serial driver suspend/resume
This patch fixes the unbalanced calls to enable_irq_wake() and
disable_irq_wake() in the AT91 (and AVR32) serial driver.
It should resolve these kernel messages:
Unbalanced IRQ x wake disable
BUG: warning at kernel/irq/manage.c:167/set_irq_wake()
Original patch from Marc Pignat.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 1f9222c..881f886 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -890,7 +890,6 @@
if (device_may_wakeup(&pdev->dev) && !at91_suspend_entering_slow_clock())
enable_irq_wake(port->irq);
else {
- disable_irq_wake(port->irq);
uart_suspend_port(&atmel_uart, port);
atmel_port->suspended = 1;
}
@@ -907,6 +906,8 @@
uart_resume_port(&atmel_uart, port);
atmel_port->suspended = 0;
}
+ else
+ disable_irq_wake(port->irq);
return 0;
}