1 files changed, 6 insertions, 16 deletions

diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index 7282d1f4912b..7b5c0bd07f80 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -72,16 +72,10 @@ struct acm_wb {
 };
 
 struct acm_rb {
-        struct list_head        list;
         int                     size;
         unsigned char           *base;
         dma_addr_t              dma;
-};
-
-struct acm_ru {
-        struct list_head        list;
-        struct acm_rb           *buffer;
-        struct urb              *urb;
+        int                     index;
         struct acm              *instance;
 };
 
@@ -97,34 +91,30 @@ struct acm {
         unsigned int country_code_size;                 /* size of this buffer */
         unsigned int country_rel_date;                  /* release date of version */
         struct acm_wb wb[ACM_NW];
-        struct acm_ru ru[ACM_NR];
-        struct acm_rb rb[ACM_NR];
+        unsigned long read_urbs_free;
+        struct urb *read_urbs[ACM_NR];
+        struct acm_rb read_buffers[ACM_NR];
         int rx_buflimit;
         int rx_endpoint;
         spinlock_t read_lock;
-        struct list_head spare_read_urbs;
-        struct list_head spare_read_bufs;
-        struct list_head filled_read_bufs;
         int write_used;                                 /* number of non-empty write buffers */
-        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 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) */
         unsigned int ctrlout;                           /* output control lines (DTR, RTS) */
         unsigned int writesize;                         /* max packet size for the output bulk endpoint */
         unsigned int readsize,ctrlsize;                 /* buffer sizes for freeing */
         unsigned int minor;                             /* acm minor number */
-        unsigned char throttle;                         /* throttled by tty layer */
         unsigned char clocal;                           /* termios CLOCAL */
         unsigned int ctrl_caps;                         /* control capabilities from the class specific header */
         unsigned int susp_count;                        /* number of suspended interfaces */
         unsigned int combined_interfaces:1;             /* control and data collapsed */
         unsigned int is_int_ep:1;                       /* interrupt endpoints contrary to spec used */
+        unsigned int throttled:1;                       /* actually throttled */
+        unsigned int throttle_req:1;                    /* throttle requested */
         u8 bInterval;
         struct acm_wb *delayed_wb;                      /* write queued for a device about to be woken */
 };