mfd: sta2x11-mfd: Only add sta2x11_mfd if it hasn't already been added

The pci probe method is called twice now, so we have to call
sta2x11_mfd_add() only once to avoid a -EBUSY error.

Signed-off-by: Davide Ciminaghi <ciminaghi@gnudd.com>
Acked-by: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mfd/sta2x11-mfd.c b/drivers/mfd/sta2x11-mfd.c
index 8d38ef264722..b981dc4a7b3c 100644
--- a/drivers/mfd/sta2x11-mfd.c
+++ b/drivers/mfd/sta2x11-mfd.c
@@ -585,7 +585,8 @@ static int __devinit sta2x11_mfd_probe(struct pci_dev *pdev,
         sta2x11_mfd_setup(pdev, setup_data);
 
         /* Record this pdev before mfd_add_devices: their probe looks for it */
-        sta2x11_mfd_add(pdev, GFP_ATOMIC);
+        if (!sta2x11_mfd_find(pdev))
+                sta2x11_mfd_add(pdev, GFP_ATOMIC);
 
         /* Just 2 bars for all mfd's at present */
         for (i = 0; i < 2; i++) {