at91: fix enable/disable_irq_wake symmetry in pcmcia driver

Fix enable_irq_wake and disable_irq_wake symmetry in at91 pcmcia driver

disable_irq_wake call must be symmetric with enable_irq_wake.  This patch
fix that problem for the at91_pcmia driver.  It seems that this patch was
forgotten when we've fixed irq_wake symmetry in all at91 related drivers.
It was discussed in the "at91 drivers and [enable/disable]_irq_wake
(wrong?) usage" thread on the linux-arm-kernel mailing list.

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Cc: David Brownell <david-b@pacbell.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/pcmcia/at91_cf.c

diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 948efc7..eb6abd3 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -336,16 +336,21 @@
 		enable_irq_wake(board->det_pin);
 		if (board->irq_pin)
 			enable_irq_wake(board->irq_pin);
-	} else {
-		disable_irq_wake(board->det_pin);
-		if (board->irq_pin)
-			disable_irq_wake(board->irq_pin);
 	}
 	return 0;
 }
 
 static int at91_cf_resume(struct platform_device *pdev)
 {
+	struct at91_cf_socket	*cf = platform_get_drvdata(pdev);
+	struct at91_cf_data	*board = cf->board;
+
+	if (device_may_wakeup(&pdev->dev)) {
+		disable_irq_wake(board->det_pin);
+		if (board->irq_pin)
+			disable_irq_wake(board->irq_pin);
+	}
+
 	pcmcia_socket_dev_resume(&pdev->dev);
 	return 0;
 }