If vpif_probe() fails on v4l2_device_register() and vpif_probe_complete(),
then memory allocated at initialize_vpif() for global vpif_obj.dev[i]
become unreleased.
The patch adds deallocation of vpif_obj.dev[i] on the error path.
Signed-off-by: Young Xiao <92siuyang@xxxxxxxxx>
---
drivers/media/platform/davinci/vpif_capture.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index b5aacb0..75c2c10 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -1385,6 +1385,14 @@ static int initialize_vpif(void)
return err;
}
+static inline void free_vpif_objs(void)
+{
+ int i;
+
+ for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
+ kfree(vpif_obj.dev[i]);
+}
+
static int vpif_async_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *subdev,
struct v4l2_async_subdev *asd)
@@ -1654,7 +1662,7 @@ static __init int vpif_probe(struct platform_device *pdev)
err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
if (err) {
v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
- goto cleanup;
+ goto vpif_free;
}
while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
@@ -1701,7 +1709,9 @@ static __init int vpif_probe(struct platform_device *pdev)
"registered sub device %s\n",
subdevdata->name);
}
- vpif_probe_complete();
+ err = vpif_probe_complete();
+ if (err)
+ goto probe_subdev_out;
} else {
vpif_obj.notifier.ops = &vpif_async_ops;
err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
@@ -1720,6 +1730,8 @@ static __init int vpif_probe(struct platform_device *pdev)
kfree(vpif_obj.sd);
vpif_unregister:
v4l2_device_unregister(&vpif_obj.v4l2_dev);
+vpif_free:
+ free_vpif_objs();
cleanup:
v4l2_async_notifier_cleanup(&vpif_obj.notifier);
--
2.7.4
