staging: dgnc: remove useless variable 'ch_intr_modem'

The 'ch_intr_modem' variable was used only for increasing.
So the 'ch_intr_modem' variable is not useful for this driver.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/dgnc/dgnc_cls.c b/drivers/staging/dgnc/dgnc_cls.c
index 31fcf04..b9955be 100644 (file)
--- a/drivers/staging/dgnc/dgnc_cls.c
+++ b/drivers/staging/dgnc/dgnc_cls.c
@@ -599,15 +599,6 @@ static inline void cls_parse_isr(struct dgnc_board *brd, uint port)
                        cls_copy_data_from_queue_to_uart(ch);
                }
 
-               /* CTS/RTS change of state */
-               if (isr & UART_IIR_CTSRTS) {
-                       ch->ch_intr_modem++;
-                       /*
-                        * Don't need to do anything, the cls_parse_modem
-                        * below will grab the updated modem signals.
-                        */
-               }
-
                /* Parse any modem signal changes */
                cls_parse_modem(ch, readb(&ch->ch_cls_uart->msr));
        }

diff --git a/drivers/staging/dgnc/dgnc_driver.h b/drivers/staging/dgnc/dgnc_driver.h
index 914130d..1063388 100644 (file)
--- a/drivers/staging/dgnc/dgnc_driver.h
+++ b/drivers/staging/dgnc/dgnc_driver.h
@@ -377,7 +377,6 @@ struct channel_t {
        ulong           ch_xon_sends;   /* Count of xons transmitted */
        ulong           ch_xoff_sends;  /* Count of xoffs transmitted */
 
-       ulong           ch_intr_modem;  /* Count of interrupts */
        ulong           ch_intr_tx;     /* Count of interrupts */
        ulong           ch_intr_rx;     /* Count of interrupts */
 

diff --git a/drivers/staging/dgnc/dgnc_neo.c b/drivers/staging/dgnc/dgnc_neo.c
index f99c0db..9b3264c 100644 (file)
--- a/drivers/staging/dgnc/dgnc_neo.c
+++ b/drivers/staging/dgnc/dgnc_neo.c
@@ -450,7 +450,6 @@ static inline void neo_parse_isr(struct dgnc_board *brd, uint port)
                         * If we get here, this means the hardware is doing auto flow control.
                         * Check to see whether RTS/DTR or CTS/DSR caused this interrupt.
                         */
-                       ch->ch_intr_modem++;
                        cause = readb(&ch->ch_neo_uart->mcr);
                        /* Which pin is doing auto flow? RTS or DTR? */
                        if ((cause & 0x4) == 0) {