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>

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 948efc775a78..eb6abd3f9221 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -336,16 +336,21 @@ static int at91_cf_suspend(struct platform_device *pdev, pm_message_t mesg)
                 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;
 }