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@xxxxxx>
---
drivers/usb/class/cdc-acm.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index b519138..7a2b3de 100644
--- 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;
--
2.1.4
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