linux-kernel - [PATCH 3/5] GenWQE: Ensure rc is not returning an uninitialized value

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Date:	Thu, 20 Mar 2014 15:11:04 +0100
From:	Frank Haverkamp <haver@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	gregkh@...uxfoundation.org, arnd@...db.de, cody@...ux.vnet.ibm.com,
	schwidefsky@...ibm.com, utz.bacher@...ibm.com, jsvogt@...ibm.com,
	MIJUNG@...ibm.com, cascardo@...ux.vnet.ibm.com, michael@...ra.de,
	colin.king@...onical.com, bjking1@...ibm.com, esa@...ibm.com,
	haver@...ux.vnet.ibm.com
Subject: [PATCH 3/5] GenWQE: Ensure rc is not returning an uninitialized value

From: Colin Ian King <colin.king@...onical.com>

rc is not initialized, so genwqe_finish_queue() either returns -EIO or
garbage.  Fortunately the return is not being checked by any callers,
so this has not yet caused any problems. Even so, it makes sense to
fix this small bug in case is is checked in future.

Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Frank Haverkamp <haver@...ux.vnet.ibm.com>
---
 drivers/misc/genwqe/card_ddcb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/misc/genwqe/card_ddcb.c
+++ b/drivers/misc/genwqe/card_ddcb.c
@@ -1310,7 +1310,7 @@ static int queue_wake_up_all(struct genw
  */
 int genwqe_finish_queue(struct genwqe_dev *cd)
 {
-	int i, rc, in_flight;
+	int i, rc = 0, in_flight;
 	int waitmax = genwqe_ddcb_software_timeout;
 	struct pci_dev *pci_dev = cd->pci_dev;
 	struct ddcb_queue *queue = &cd->queue;

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