linux-kernel - [PATCH 5/7] rsxx: fix error return code

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Message-Id: <1451143726-28195-6-git-send-email-Julia.Lawall@lip6.fr>
Date:	Sat, 26 Dec 2015 16:28:44 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Joshua Morris <josh.h.morris@...ibm.com>
Cc:	kernel-janitors@...r.kernel.org,
	Philip Kelleher <pjk1939@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 5/7] rsxx: fix error return code

Return a negative error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/block/rsxx/core.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index d8b2488..3801721 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -893,6 +893,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
 	card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event");
 	if (!card->event_wq) {
 		dev_err(CARD_TO_DEV(card), "Failed card event setup.\n");
+		st = -ENOMEM;
 		goto failed_event_handler;
 	}
 

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