diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-10-27 09:34:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-03 23:59:18 +0900 |
| commit | e81d7826b8f40430a1ea1b330e24d9a9eb4512c4 (patch) | |
| tree | 8ac3f12dbfa2cf6249053c4d8b33351343ad0eed /sound | |
| parent | 77a754fcfec138e8d8a29c3ed9d4f54c022a6013 (diff) | |
ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev()
[ Upstream commit 4a4c8482e370d697738a78dcd7bf2780832cb712 ]
dev_set_name() in soundbus_add_one() allocates memory for name, it need be
freed when of_device_register() fails, call soundbus_dev_put() to give up
the reference that hold in device_initialize(), so that it can be freed in
kobject_cleanup() when the refcount hit to 0. And other resources are also
freed in i2sbus_release_dev(), so it can return 0 directly.
Fixes: f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221027013438.991920-1-yangyingliang@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/aoa/soundbus/i2sbus/core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c index faf6b03131ee..f6841daf9e3b 100644 --- a/sound/aoa/soundbus/i2sbus/core.c +++ b/sound/aoa/soundbus/i2sbus/core.c @@ -302,6 +302,10 @@ static int i2sbus_add_dev(struct macio_dev *macio, if (soundbus_add_one(&dev->sound)) { printk(KERN_DEBUG "i2sbus: device registration error!\n"); + if (dev->sound.ofdev.dev.kobj.state_initialized) { + soundbus_dev_put(&dev->sound); + return 0; + } goto err; } |