From: Young Xiao 92siuyang@gmail.com
[ Upstream commit 64f883cd98c6d43013fb0cea788b63e50ebc068c ]
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@gmail.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 6216b7ac6875..a20cb6fff2ec 100644 --- a/drivers/media/platform/davinci/vpif_capture.c +++ b/drivers/media/platform/davinci/vpif_capture.c @@ -1384,6 +1384,14 @@ 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) @@ -1653,7 +1661,7 @@ 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))) { @@ -1700,7 +1708,9 @@ 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, @@ -1719,6 +1729,8 @@ 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);