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-rw-r--r--include/linux/tty.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 51f56e5ec955..a228c0ee484f 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -284,7 +284,7 @@ struct tty_operations;
struct tty_struct {
int magic;
struct kref kref;
- struct device *dev;
+ struct device *dev; /* class device or NULL (e.g. ptys, serdev) */
struct tty_driver *driver;
const struct tty_operations *ops;
int index;