USB: additional power savings for cdc-acm devices that support remote wakeup

[linux-2.6-omap-h63xx.git] / drivers / usb / class / cdc-acm.h

diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index 046e064b033af6675bb48208b277f9967130c243..85c3aaaab7c58570ec0155e0cbd37590cb0a4472 100644 (file)
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -107,10 +107,14 @@ struct acm {
        struct list_head filled_read_bufs;
        int write_used;                                 /* number of non-empty write buffers */
        int write_ready;                                /* write urb is not running */
+       int old_ready;
+       int processing;
+       int transmitting;
        spinlock_t write_lock;
        struct mutex mutex;
        struct usb_cdc_line_coding line;                /* bits, stop, parity */
        struct work_struct work;                        /* work queue entry for line discipline waking up */
+       struct work_struct waker;
        struct tasklet_struct urb_task;                 /* rx processing */
        spinlock_t throttle_lock;                       /* synchronize throtteling and read callback */
        unsigned int ctrlin;                            /* input control lines (DCD, DSR, RI, break, overruns) */
@@ -123,6 +127,7 @@ struct acm {
        unsigned char clocal;                           /* termios CLOCAL */
        unsigned int ctrl_caps;                         /* control capabilities from the class specific header */
        unsigned int susp_count;                        /* number of suspended interfaces */
+       struct acm_wb *delayed_wb;                      /* write queued for a device about to be woken */
 };
 
 #define CDC_DATA_INTERFACE_TYPE        0x0a