On 4/25/2018 7:56 AM, Arvind Yadav wrote:
Never directly free @dev after calling device_register(), even
if it returned an error. Always use put_device() to give up the
reference initialized.

Signed-off-by: Arvind Yadav <[email protected]>
---
  arch/sparc/kernel/vio.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c
index 1a0fa10..32bae68 100644
--- a/arch/sparc/kernel/vio.c
+++ b/arch/sparc/kernel/vio.c
@@ -403,7 +403,7 @@ static struct vio_dev *vio_create_one(struct mdesc_handle 
*hp, u64 mp,
        if (err) {
                printk(KERN_ERR "VIO: Could not register device %s, err=%d\n",
                       dev_name(&vdev->dev), err);
-               kfree(vdev);
+               put_device(&vdev->dev);

Hmmm... I can see why the put_device() might be a good idea, but I think we still need the kfree() so as to not leak the memory that was kzalloc'd above for vdev.

sln

                return NULL;
        }
        if (vdev->dp)

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