3 files changed, 23 insertions, 10 deletions

diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h
index ba617c37245..956edf3bbec 100644
--- a/include/linux/usb/cdc.h
+++ b/include/linux/usb/cdc.h
@@ -73,6 +73,13 @@ struct usb_cdc_acm_descriptor {
 	__u8	bmCapabilities;
 } __attribute__ ((packed));
 
+/* capabilities from 5.2.3.3 */
+
+#define USB_CDC_COMM_FEATURE	0x01
+#define USB_CDC_CAP_LINE	0x02
+#define USB_CDC_CAP_BRK	0x04
+#define USB_CDC_CAP_NOTIFY	0x08
+
 /* "Union Functional Descriptor" from CDC spec 5.2.3.8 */
 struct usb_cdc_union_desc {
 	__u8	bLength;
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index ae7833749fa..245c7253122 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -367,7 +367,7 @@ struct usb_debug_descriptor {
 	/* bulk endpoints with 8 byte maxpacket */
 	__u8  bDebugInEndpoint;
 	__u8  bDebugOutEndpoint;
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
@@ -396,7 +396,7 @@ struct usb_security_descriptor {
 
 	__le16 wTotalLength;
 	__u8  bNumEncryptionTypes;
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
@@ -410,7 +410,7 @@ struct usb_key_descriptor {
 	__u8  tTKID[3];
 	__u8  bReserved;
 	__u8  bKeyData[0];
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
@@ -426,7 +426,7 @@ struct usb_encryption_descriptor {
 #define	USB_ENC_TYPE_RSA_1		3	/* rsa3072/sha1 auth */
 	__u8  bEncryptionValue;		/* use in SET_ENCRYPTION */
 	__u8  bAuthKeyIndex;
-};
+} __attribute__((packed));
 
 
 /*-------------------------------------------------------------------------*/
@@ -438,7 +438,7 @@ struct usb_bos_descriptor {
 
 	__le16 wTotalLength;
 	__u8  bNumDeviceCaps;
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
@@ -447,7 +447,7 @@ struct usb_dev_cap_header {
 	__u8  bLength;
 	__u8  bDescriptorType;
 	__u8  bDevCapabilityType;
-};
+} __attribute__((packed));
 
 #define	USB_CAP_TYPE_WIRELESS_USB	1
 
@@ -475,7 +475,7 @@ struct usb_wireless_cap_descriptor {	/* Ultra Wide Band */
 	__u8  bmFFITXPowerInfo;	/* FFI power levels */
 	__le16 bmBandGroup;
 	__u8  bReserved;
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
@@ -496,7 +496,7 @@ struct usb_wireless_ep_comp_descriptor {
 #define USB_ENDPOINT_SWITCH_NO		0
 #define USB_ENDPOINT_SWITCH_SWITCH	1
 #define USB_ENDPOINT_SWITCH_SCALE	2
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
@@ -512,7 +512,7 @@ struct usb_handshake {
 	__u8 CDID[16];
 	__u8 nonce[16];
 	__u8 MIC[8];
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
@@ -524,7 +524,7 @@ struct usb_connection_context {
 	__u8 CHID[16];		/* persistent host id */
 	__u8 CDID[16];		/* device id (unique w/in host context) */
 	__u8 CK[16];		/* connection key */
-};
+} __attribute__((packed));
 
 /*-------------------------------------------------------------------------*/
 
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 33dcd857669..32acbae28d2 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -54,6 +54,8 @@
  * @write_wait: a wait_queue_head_t used by the port.
  * @work: work queue entry for the line discipline waking up.
  * @open_count: number of times this port has been opened.
+ * @throttled: nonzero if the read urb is inactive to throttle the device
+ * @throttle_req: nonzero if the tty wants to throttle us
  *
  * This structure is used by the usb-serial core and drivers for the specific
  * ports of a device.
@@ -88,6 +90,8 @@ struct usb_serial_port {
 	wait_queue_head_t	write_wait;
 	struct work_struct	work;
 	int			open_count;
+	char			throttled;
+	char			throttle_req;
 	struct device		dev;
 };
 #define to_usb_serial_port(d) container_of(d, struct usb_serial_port, dev)
@@ -269,6 +273,8 @@ extern int usb_serial_generic_write_room (struct usb_serial_port *port);
 extern int usb_serial_generic_chars_in_buffer (struct usb_serial_port *port);
 extern void usb_serial_generic_read_bulk_callback (struct urb *urb);
 extern void usb_serial_generic_write_bulk_callback (struct urb *urb);
+extern void usb_serial_generic_throttle (struct usb_serial_port *port);
+extern void usb_serial_generic_unthrottle (struct usb_serial_port *port);
 extern void usb_serial_generic_shutdown (struct usb_serial *serial);
 extern int usb_serial_generic_register (int debug);
 extern void usb_serial_generic_deregister (void);