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From: Julia Lawall <Julia.Lawall@lip6.fr>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: kernel-janitors@vger.kernel.org,
	spi-devel-general@lists.sourceforge.net,
	linux-kernel@vger.kernel.org
Subject: [PATCH 9/14] drivers/spi/spi-omap-100k.c: fix error return code
Date: Sun, 19 Aug 2012 10:44:28 +0200	[thread overview]
Message-ID: <1345365870-29831-13-git-send-email-Julia.Lawall@lip6.fr> (raw)
In-Reply-To: <1345365870-29831-1-git-send-email-Julia.Lawall@lip6.fr>

From: Julia Lawall <Julia.Lawall@lip6.fr>

Initialize return variable before exiting on an error path.

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@lip6.fr>

---
Actually, omap1_spi100k_reset currently always returns 0, so the test is
never true.  Perhaps this should be taken into account in some other way.

 drivers/spi/spi-omap-100k.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-omap-100k.c b/drivers/spi/spi-omap-100k.c
index 9bd1c92..b581107 100644
--- a/drivers/spi/spi-omap-100k.c
+++ b/drivers/spi/spi-omap-100k.c
@@ -542,7 +542,8 @@ static int __devinit omap1_spi100k_probe(struct platform_device *pdev)
 		goto err2;
 	}
 
-	if (omap1_spi100k_reset(spi100k) < 0)
+	status = omap1_spi100k_reset(spi100k);
+	if (status < 0)
 		goto err3;
 
 	status = spi_register_master(master);


  parent reply	other threads:[~2012-08-19  8:46 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-19  8:44 [PATCH 0/14] fix error return code Julia Lawall
2012-08-19  8:44 ` [PATCH 1/14] drivers/rpmsg/virtio_rpmsg_bus.c: " Julia Lawall
2012-08-19  8:44 ` [PATCH 6/14] drivers/power/wm97xx_battery.c: " Julia Lawall
2012-08-19  8:44 ` [PATCH 5/14] drivers/power/ab8500_charger.c: " Julia Lawall
2012-08-19  8:44 ` [PATCH 4/14] drivers/power/bq27x00_battery.c: " Julia Lawall
2012-08-19  8:44 ` [PATCH 3/14] drivers/power/ab8500_fg.c: " Julia Lawall
2012-08-19  8:44 ` [PATCH 2/14] drivers/power/ab8500_btemp.c: " Julia Lawall
2012-08-23  1:51   ` Anton Vorontsov
2012-08-19  8:44 ` [PATCH 7/14] drivers/mtd/maps/rbtx4939-flash.c: delete unneeded test Julia Lawall
2012-08-25 11:04   ` Artem Bityutskiy
2012-08-19  8:44 ` [PATCH 8/14] drivers/video/sunxvr2500.c: fix error return code Julia Lawall
2012-08-23 20:48   ` Florian Tobias Schandinat
2012-08-19  8:44 ` [PATCH 12/14] drivers/spi/spi-coldfire-qspi.c: " Julia Lawall
2012-08-19  8:44 ` [PATCH 11/14] drivers/spi/spi-orion.c: " Julia Lawall
2012-08-19  8:44 ` [PATCH 10/14] drivers/spi/spi-ep93xx.c: " Julia Lawall
2012-08-22 16:12   ` H Hartley Sweeten
2012-08-19  8:44 ` Julia Lawall [this message]
2012-08-19  8:44 ` [PATCH 13/14] drivers/mtd/ubi/build.c: " Julia Lawall
2012-08-25 11:10   ` Artem Bityutskiy
2012-08-19  8:44 ` [PATCH 14/14] drivers/spi/spi-s3c24xx.c: " Julia Lawall
2012-08-22  9:38   ` Kukjin Kim
2012-08-22 11:40     ` Mark Brown
2012-08-22 11:42       ` Julia Lawall
2012-08-22 17:00         ` Mark Brown

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