UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drivers/gpio/gpio-langwell.c: fix error return code 

Convert a 0 error return code to a negative one, as returned elsewhere in the
function.

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

// <smpl>
@@
identifier ret;
expression e,e1,e2,e3,e4,x;
@@

(
if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
|
ret = 0
)
... when != ret = e1
*x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
... when != x = e2
    when != ret = e3
*if (x == NULL || ...)
{
  ... when != ret = e4
*  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Julia Lawall 2012-08-05 11:52:34 +02:00 committed by Linus Walleij
parent f7093f3e7a
commit d6a2b7ba67
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpio/gpio-langwell.c
View File

@ -339,7 +339,7 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
resource_size_t start, len;
struct lnw_gpio *lnw;
u32 gpio_base;
int retval = 0;
int retval;
int ngpio = id->driver_data;
retval = pci_enable_device(pdev);
@ -357,6 +357,7 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
base = ioremap_nocache(start, len);
if (!base) {
dev_err(&pdev->dev, "error mapping bar1\n");
retval = -EFAULT;
goto err3;
}
gpio_base = *((u32 *)base + 1);
@ -381,8 +382,10 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
lnw->domain = irq_domain_add_linear(pdev->dev.of_node, ngpio,
&lnw_gpio_irq_ops, lnw);
if (!lnw->domain)
if (!lnw->domain) {
retval = -ENOMEM;
goto err3;
}
lnw->reg_base = base;
lnw->chip.label = dev_name(&pdev->dev);