Commit 4a4c8482 authored by Yang Yingliang's avatar Yang Yingliang Committed by Takashi Iwai
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ALSA: aoa: i2sbus: fix possible memory leak in i2sbus_add_dev() 



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: f3d9478b ("[ALSA] snd-aoa: add snd-aoa")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221027013438.991920-1-yangyingliang@huawei.com


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f850a2b1

sound/aoa/soundbus/i2sbus/core.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

	}