From 088c64f812847b3623b03d167ed329f90f3e38a4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 25 Mar 2011 11:06:02 +0100 Subject: USB: cdc-acm: re-write read processing Kill rx tasklet, which is no longer needed, and re-write read processing. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.h | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) (limited to 'drivers/usb/class/cdc-acm.h') 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 */ }; -- cgit v1.2.1