From: chengkaitao pilgrimtao@gmail.com
[ Upstream commit a58a7f97ba11391d2d0d408e0b24f38d86ae748e ]
The reference must be released when device_register(&vm_cmdline_parent) failed. Add the corresponding 'put_device()' in the error handling path.
Signed-off-by: chengkaitao pilgrimtao@gmail.com Message-Id: 20220602005542.16489-1-chengkaitao@didiglobal.com Signed-off-by: Michael S. Tsirkin mst@redhat.com Acked-by: Jason Wang jasowang@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/virtio/virtio_mmio.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 50840984fbfa..f62da3b7c27b 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -630,6 +630,7 @@ static int vm_cmdline_set(const char *device, if (!vm_cmdline_parent_registered) { err = device_register(&vm_cmdline_parent); if (err) { + put_device(&vm_cmdline_parent); pr_err("Failed to register parent device!\n"); return err; }