linux-kernel - [PATCH 4/6] solos-pci: fix error return code

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Date:	Sat, 22 Nov 2014 15:39:17 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Chas Williams <chas@....nrl.navy.mil>
Cc:	kernel-janitors@...r.kernel.org,
	linux-atm-general@...ts.sourceforge.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 4/6] solos-pci: fix error return code

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

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/atm/solos-pci.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 7652e8d..21b0bc6 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -1225,11 +1225,13 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
 	if (!card->config_regs) {
 		dev_warn(&dev->dev, "Failed to ioremap config registers\n");
+		err = -ENOMEM;
 		goto out_release_regions;
 	}
 	card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
 	if (!card->buffers) {
 		dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
+		err = -ENOMEM;
 		goto out_unmap_config;
 	}
 

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