diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.h')
| -rw-r--r-- | drivers/usb/class/cdc-acm.h | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index 5eeb570b9a6..ca7937f26e2 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -52,7 +52,7 @@ */ /* - * The only reason to have several buffers is to accomodate assumptions + * The only reason to have several buffers is to accommodate assumptions * in line disciplines. They ask for empty space amount, receive our URB size, * and proceed to issue several 1-character writes, assuming they will fit. * The very first write takes a complete URB. Fortunately, this only happens @@ -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; }; @@ -97,35 +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 */ - wait_queue_head_t drain_wait; /* close processing */ - 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 */ }; @@ -137,3 +126,4 @@ struct acm { #define SINGLE_RX_URB 2 #define NO_CAP_LINE 4 #define NOT_A_MODEM 8 +#define NO_DATA_INTERFACE 16 |