linux-kernel - [PATCH 4/8] sta2x11-mfd : only add sta2x11

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Date:	Wed, 12 Sep 2012 12:22:50 +0200
From:	ciminaghi@...dd.com
To:	sameo@...ux.intel.com, rubini@...dd.com, giancarlo.asnaghi@...com
Cc:	linux-kernel@...r.kernel.org,
	Davide Ciminaghi <ciminaghi@...dd.com>
Subject: [PATCH 4/8] sta2x11-mfd : only add sta2x11_mfd if it hasn't already been added

From: Davide Ciminaghi <ciminaghi@...dd.com>

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@...dd.com>
---
 drivers/mfd/sta2x11-mfd.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/mfd/sta2x11-mfd.c b/drivers/mfd/sta2x11-mfd.c
index a9eeba1..82fe356 100644
--- a/drivers/mfd/sta2x11-mfd.c
+++ b/drivers/mfd/sta2x11-mfd.c
@@ -561,7 +561,8 @@ 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++) {
-- 
1.7.9.1

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