diff options
| author | Young Xiao <92siuyang@gmail.com> | 2019-06-04 08:26:33 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-12 10:46:06 -0400 |
| commit | 64f883cd98c6d43013fb0cea788b63e50ebc068c (patch) | |
| tree | f175c156f886f73d7596d494aa3e88f1f4caf77a /drivers/media/platform/davinci/vpif_capture.c | |
| parent | 3510c68d32bf3a188c077b5fb87339379f4e6b43 (diff) | |
| download | linux-64f883cd98c6d43013fb0cea788b63e50ebc068c.tar.bz2 | |
media: davinci: vpif_capture: fix memory leak in vpif_probe()
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>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/davinci/vpif_capture.c')
| -rw-r--r-- | drivers/media/platform/davinci/vpif_capture.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c index 61809d2050fa..f0f7ef638c56 100644 --- a/drivers/media/platform/davinci/vpif_capture.c +++ b/drivers/media/platform/davinci/vpif_capture.c @@ -1376,6 +1376,14 @@ vpif_init_free_channel_objects: 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) @@ -1645,7 +1653,7 @@ 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))) { @@ -1692,7 +1700,9 @@ 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, @@ -1711,6 +1721,8 @@ probe_subdev_out: 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); |