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authorchengkaitao <pilgrimtao@gmail.com>2022-06-02 08:55:42 +0800
committerMichael S. Tsirkin <mst@redhat.com>2022-06-08 08:56:03 -0400
commita58a7f97ba11391d2d0d408e0b24f38d86ae748e (patch)
tree350a294cc0bb86c64b5f341e3d8bbf78443f3ccc /drivers
parent2f72b2262d317093596c72bd5b27b9880be7611e (diff)
virtio-mmio: fix missing put_device() when vm_cmdline_parent registration failed
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/virtio/virtio_mmio.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index f9a36bc7ac27..5ce79bf9f92b 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -701,6 +701,7 @@ 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;
}