4 files changed, 4 insertions, 8 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 11da5fb284d0..913b07b30d33 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -789,8 +789,7 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp)
 	tty_port_close(&acm->port, tty, filp);
 }
 
-static int acm_tty_write(struct tty_struct *tty,
-					const unsigned char *buf, int count)
+static int acm_tty_write(struct tty_struct *tty, const u8 *buf, int count)
 {
 	struct acm *acm = tty->driver_data;
 	int stat;
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 1115396b46a0..1d08a1d8d3cd 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -734,7 +734,7 @@ exit:
 	spin_unlock_irq(&port->port_lock);
 }
 
-static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count)
+static int gs_write(struct tty_struct *tty, const u8 *buf, int count)
 {
 	struct gs_port	*port = tty->driver_data;
 	unsigned long	flags;
diff --git a/drivers/usb/host/xhci-dbgtty.c b/drivers/usb/host/xhci-dbgtty.c
index d3acc0829ee5..f5f2d0e12e69 100644
--- a/drivers/usb/host/xhci-dbgtty.c
+++ b/drivers/usb/host/xhci-dbgtty.c
@@ -208,9 +208,7 @@ static void dbc_tty_close(struct tty_struct *tty, struct file *file)
 	tty_port_close(&port->port, tty, file);
 }
 
-static int dbc_tty_write(struct tty_struct *tty,
-			 const unsigned char *buf,
-			 int count)
+static int dbc_tty_write(struct tty_struct *tty, const u8 *buf, int count)
 {
 	struct dbc_port		*port = tty->driver_data;
 	unsigned long		flags;
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 7b4805c1004d..51f738ea3f77 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -361,8 +361,7 @@ static void serial_cleanup(struct tty_struct *tty)
 	module_put(owner);
 }
 
-static int serial_write(struct tty_struct *tty, const unsigned char *buf,
-								int count)
+static int serial_write(struct tty_struct *tty, const u8 *buf, int count)
 {
 	struct usb_serial_port *port = tty->driver_data;
 	int retval = -ENODEV;