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path: root/drivers/usb/serial
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Diffstat (limited to 'drivers/usb/serial')
-rw-r--r--drivers/usb/serial/digi_acceleport.c52
1 files changed, 13 insertions, 39 deletions
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index d78692c01cf..9ffd99aded5 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -930,23 +930,17 @@ static void digi_rx_unthrottle( struct usb_serial_port *port )
930{ 930{
931 931
932 int ret = 0; 932 int ret = 0;
933 int len;
934 unsigned long flags; 933 unsigned long flags;
935 struct digi_port *priv = usb_get_serial_port_data(port); 934 struct digi_port *priv = usb_get_serial_port_data(port);
936 struct tty_struct *tty = port->tty;
937
938 935
939dbg( "digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num ); 936dbg( "digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num );
940 937
941 spin_lock_irqsave( &priv->dp_port_lock, flags ); 938 spin_lock_irqsave( &priv->dp_port_lock, flags );
942 939
943 /* send any buffered chars from throttle time on to tty subsystem */ 940 /* turn throttle off */
944 941 priv->dp_throttled = 0;
945 len = tty_buffer_request_room(tty, priv->dp_in_buf_len); 942 priv->dp_in_buf_len = 0;
946 if( len > 0 ) { 943 priv->dp_throttle_restart = 0;
947 tty_insert_flip_string_flags(tty, priv->dp_in_buf, priv->dp_in_flag_buf, len);
948 tty_flip_buffer_push( tty );
949 }
950 944
951 /* restart read chain */ 945 /* restart read chain */
952 if( priv->dp_throttle_restart ) { 946 if( priv->dp_throttle_restart ) {
@@ -954,11 +948,6 @@ dbg( "digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num );
954 ret = usb_submit_urb( port->read_urb, GFP_ATOMIC ); 948 ret = usb_submit_urb( port->read_urb, GFP_ATOMIC );
955 } 949 }
956 950
957 /* turn throttle off */
958 priv->dp_throttled = 0;
959 priv->dp_in_buf_len = 0;
960 priv->dp_throttle_restart = 0;
961
962 spin_unlock_irqrestore( &priv->dp_port_lock, flags ); 951 spin_unlock_irqrestore( &priv->dp_port_lock, flags );
963 952
964 if( ret ) { 953 if( ret ) {
@@ -1864,31 +1853,16 @@ static int digi_read_inb_callback( struct urb *urb )
1864 /* data length is len-1 (one byte of len is status) */ 1853 /* data length is len-1 (one byte of len is status) */
1865 --len; 1854 --len;
1866 1855
1867 if( throttled ) { 1856 len = tty_buffer_request_room(tty, len);
1868 1857 if( len > 0 ) {
1869 len = min( len, 1858 /* Hot path */
1870 DIGI_IN_BUF_SIZE - priv->dp_in_buf_len ); 1859 if(flag == TTY_NORMAL)
1871 1860 tty_insert_flip_string(tty, data, len);
1872 if( len > 0 ) { 1861 else {
1873 memcpy( priv->dp_in_buf + priv->dp_in_buf_len, 1862 for(i = 0; i < len; i++)
1874 data, len ); 1863 tty_insert_flip_char(tty, data[i], flag);
1875 memset( priv->dp_in_flag_buf
1876 + priv->dp_in_buf_len, flag, len );
1877 priv->dp_in_buf_len += len;
1878 }
1879
1880 } else {
1881 len = tty_buffer_request_room(tty, len);
1882 if( len > 0 ) {
1883 /* Hot path */
1884 if(flag == TTY_NORMAL)
1885 tty_insert_flip_string(tty, data, len);
1886 else {
1887 for(i = 0; i < len; i++)
1888 tty_insert_flip_char(tty, data[i], flag);
1889 }
1890 tty_flip_buffer_push( tty );
1891 } 1864 }
1865 tty_flip_buffer_push( tty );
1892 } 1866 }
1893 } 1867 }
1894 1868