Misc: phantom, synchronize_irq() on suspend

Wait after disabling device's interrupt until the handler finishes its work if
still in progress.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index 5108b7c576d..6e61a79de24 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -378,6 +378,8 @@ static int phantom_suspend(struct pci_dev *pdev, pm_message_t state)
         iowrite32(0, dev->caddr + PHN_IRQCTL);
         ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */
 
+        synchronize_irq(pdev->irq);
+
         return 0;
 }