[PATCH] leds: leds-sunfire: fix sunfire_led_generic_probe errorhandling

From: Axel Lin
Date: Mon Jun 27 2011 - 23:42:58 EST


This patch includes below fixes:
1. Return -ENOMEM if kzalloc fails
2. Fix a memory leak in the case of goto out_unregister_led_cdevs.

Signed-off-by: Axel Lin <axel.lin@xxxxxxxxx>
---
drivers/leds/leds-sunfire.c | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/leds/leds-sunfire.c b/drivers/leds/leds-sunfire.c
index ab6d18f..1757396 100644
--- a/drivers/leds/leds-sunfire.c
+++ b/drivers/leds/leds-sunfire.c
@@ -127,17 +127,19 @@ static int __devinit sunfire_led_generic_probe(struct platform_device *pdev,
struct led_type *types)
{
struct sunfire_drvdata *p;
- int i, err = -EINVAL;
+ int i, err;

if (pdev->num_resources != 1) {
printk(KERN_ERR PFX "Wrong number of resources %d, should be 1\n",
pdev->num_resources);
+ err = -EINVAL;
goto out;
}

p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p) {
printk(KERN_ERR PFX "Could not allocate struct sunfire_drvdata\n");
+ err = -ENOMEM;
goto out;
}

@@ -160,14 +162,14 @@ static int __devinit sunfire_led_generic_probe(struct platform_device *pdev,

dev_set_drvdata(&pdev->dev, p);

- err = 0;
-out:
- return err;
+ return 0;

out_unregister_led_cdevs:
for (i--; i >= 0; i--)
led_classdev_unregister(&p->leds[i].led_cdev);
- goto out;
+ kfree(p);
+out:
+ return err;
}

static int __devexit sunfire_led_generic_remove(struct platform_device *pdev)
--
1.7.4.1



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