linux-kernel - [PATCH 19/25] fix error return code

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Date:	Sun, 29 Dec 2013 23:47:34 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Geoff Levand <geoff@...radead.org>
Cc:	kernel-janitors@...r.kernel.org,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	linuxppc-dev@...ts.ozlabs.org, cbe-oss-dev@...ts.ozlabs.org,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 19/25]  fix error return code

From: Julia Lawall <Julia.Lawall@...6.fr>

Set the return variable to an error code as done elsewhere in the function.

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

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}

// </smpl>

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

---
Not tested.

 drivers/scsi/ps3rom.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/ps3rom.c b/drivers/scsi/ps3rom.c
index e6e2a30..04d77ce 100644
--- a/drivers/scsi/ps3rom.c
+++ b/drivers/scsi/ps3rom.c
@@ -387,6 +387,7 @@ static int ps3rom_probe(struct ps3_system_bus_device *_dev)
 	if (!host) {
 		dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed\n",
 			__func__, __LINE__);
+		error = -ENOMEM;
 		goto fail_teardown;
 	}
 

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