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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2012-09-01 23:49:37 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-05 13:44:04 -0700
commitefda0ad4aa92439d9244d77a13339e23df5e1dc1 (patch)
tree5fe8307deb2c87e2d00d2819d73ef2fc2cb5b3bb
parent9a32bb39d6a48d435135695763e5e4a06652eeda (diff)
virtio: console: fix error handling in init() function
If register_virtio_driver() fails, virtio-ports class is not destroyed. The patch adds error handling of register_virtio_driver(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/char/virtio_console.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index cdf2f54..060a672 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1941,7 +1941,17 @@ static int __init init(void)
INIT_LIST_HEAD(&pdrvdata.consoles);
INIT_LIST_HEAD(&pdrvdata.portdevs);
- return register_virtio_driver(&virtio_console);
+ err = register_virtio_driver(&virtio_console);
+ if (err < 0) {
+ pr_err("Error %d registering virtio driver\n", err);
+ goto free;
+ }
+ return 0;
+free:
+ if (pdrvdata.debugfs_dir)
+ debugfs_remove_recursive(pdrvdata.debugfs_dir);
+ class_destroy(pdrvdata.class);
+ return err;
}
static void __exit fini(void)