cdc-acm: remove unused element of struct acm

write_used was introduced with commit 884b600f63dc ("[PATCH] USB: fix acm
trouble with terminals") but never used since.

Signed-off-by: Tobias Herzog <t-herzog@gmx.de>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index b519138..7a2b3de 100644 (file)
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -101,7 +101,6 @@ struct acm {
        u8 *notification_buffer;                        /* to reassemble fragmented notifications */
        unsigned int nb_index;
        unsigned int nb_size;
-       int write_used;                                 /* number of non-empty write buffers */
        int transmitting;
        spinlock_t write_lock;
        struct mutex mutex;