gpio/omap: fix possible memory leak in omap2_gpio_dev_init()
Author: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
pdata and pdata->regs have been allocated in this function and
should be freed before leaving it, and in the other error handling
cases too.
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun
Acked-by: Kevin Hilman
Signed-off-by: Tony Lindgren
---
arch/arm/mach-omap2/gpio.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-omap2/gpio.c b/arch/arm/mach-omap2/gpio.c
index 9ad7d48..fe626e90 100644
--- a/arch/arm/mach-omap2/gpio.c
+++ b/arch/arm/mach-omap2/gpio.c
@@ -60,6 +60,7 @@ static int __init omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused)
pdata->regs = kzalloc(sizeof(struct omap_gpio_reg_offs), GFP_KERNEL);
if (!pdata->regs) {
pr_err("gpio%d: Memory allocation failed\n", id);
+ kfree(pdata);
return -ENOMEM;
}
@@ -121,6 +122,7 @@ static int __init omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused)
break;
default:
WARN(1, "Invalid gpio bank_type\n");
+ kfree(pdata->regs);
kfree(pdata);
return -EINVAL;
} |
---
arch/arm/mach-omap2/gpio.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-omap2/gpio.c b/arch/arm/mach-omap2/gpio.c
index 9ad7d48..fe626e90 100644
--- a/arch/arm/mach-omap2/gpio.c
+++ b/arch/arm/mach-omap2/gpio.c
@@ -60,6 +60,7 @@ static int __init omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused)
pdata->regs = kzalloc(sizeof(struct omap_gpio_reg_offs), GFP_KERNEL);
if (!pdata->regs) {
pr_err("gpio%d: Memory allocation failed\n", id);
+ kfree(pdata);
return -ENOMEM;
}
@@ -121,6 +122,7 @@ static int __init omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused)
break;
default:
WARN(1, "Invalid gpio bank_type\n");
+ kfree(pdata->regs);
kfree(pdata);
return -EINVAL;
}