linux-kernel - [PATCH 09/13] rapidio/idt

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Message-Id: <1469125134-16523-10-git-send-email-alexandre.bounine@idt.com>
Date:	Thu, 21 Jul 2016 14:18:50 -0400
From:	Alexandre Bounine <alexandre.bounine@....com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Alexandre Bounine <alexandre.bounine@....com>,
	Matt Porter <mporter@...nel.crashing.org>,
	Andre van Herk <andre.van.herk@...drive-technologies.com>,
	Barry Wood <barry.wood@....com>, linux-kernel@...r.kernel.org
Subject: [PATCH 09/13] rapidio/idt_gen2: fix locking warning

Fix lockdep warning during device probing: move sysfs initialization out
of code protected by a spin lock. 

Signed-off-by: Alexandre Bounine <alexandre.bounine@....com>
Cc: Matt Porter <mporter@...nel.crashing.org>
Cc: Andre van Herk <andre.van.herk@...drive-technologies.com>
Cc: Barry Wood <barry.wood@....com>
Cc: linux-kernel@...r.kernel.org
---
 drivers/rapidio/switches/idt_gen2.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/rapidio/switches/idt_gen2.c b/drivers/rapidio/switches/idt_gen2.c
index 9f7fe21..e67b923 100644
--- a/drivers/rapidio/switches/idt_gen2.c
+++ b/drivers/rapidio/switches/idt_gen2.c
@@ -436,10 +436,11 @@ static int idtg2_probe(struct rio_dev *rdev, const struct rio_device_id *id)
 				    RIO_STD_RTE_DEFAULT_PORT, IDT_NO_ROUTE);
 	}
 
+	spin_unlock(&rdev->rswitch->lock);
+
 	/* Create device-specific sysfs attributes */
 	idtg2_sysfs(rdev, true);
 
-	spin_unlock(&rdev->rswitch->lock);
 	return 0;
 }
 
@@ -452,11 +453,9 @@ static void idtg2_remove(struct rio_dev *rdev)
 		return;
 	}
 	rdev->rswitch->ops = NULL;
-
+	spin_unlock(&rdev->rswitch->lock);
 	/* Remove device-specific sysfs attributes */
 	idtg2_sysfs(rdev, false);
-
-	spin_unlock(&rdev->rswitch->lock);
 }
 
 static struct rio_device_id idtg2_id_table[] = {
-- 
1.7.8.4