linux-kernel - [PATCH 3/7] staging: dgnc: remove useless variable 'intr

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Message-ID: <20160527065336.GA2991@SEL-JYOUN-D1>
Date:	Fri, 27 May 2016 15:53:36 +0900
From:	Daeseok Youn <daeseok.youn@...il.com>
To:	lidza.louina@...il.com
Cc:	markh@...pro.net, gregkh@...uxfoundation.org,
	driverdev-devel@...uxdriverproject.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 3/7] staging: dgnc: remove useless variable 'intr_tx'

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

Signed-off-by: Daeseok Youn <daeseok.youn@...il.com>
---
 drivers/staging/dgnc/dgnc_cls.c    | 1 -
 drivers/staging/dgnc/dgnc_driver.h | 1 -
 drivers/staging/dgnc/dgnc_neo.c    | 3 ---
 3 files changed, 5 deletions(-)

diff --git a/drivers/staging/dgnc/dgnc_cls.c b/drivers/staging/dgnc/dgnc_cls.c
index 8cb7361..415a739 100644
--- a/drivers/staging/dgnc/dgnc_cls.c
+++ b/drivers/staging/dgnc/dgnc_cls.c
@@ -398,7 +398,6 @@ static inline void cls_parse_isr(struct dgnc_board *brd, uint port)
 			/* Transfer data (if any) from Write Queue -> UART. */
 			spin_lock_irqsave(&ch->ch_lock, flags);
 			ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
-			brd->intr_tx++;
 			ch->ch_intr_tx++;
 			spin_unlock_irqrestore(&ch->ch_lock, flags);
 			cls_copy_data_from_queue_to_uart(ch);
diff --git a/drivers/staging/dgnc/dgnc_driver.h b/drivers/staging/dgnc/dgnc_driver.h
index 2caeff7..a8d823b 100644
--- a/drivers/staging/dgnc/dgnc_driver.h
+++ b/drivers/staging/dgnc/dgnc_driver.h
@@ -183,7 +183,6 @@ struct dgnc_board {
 	uint		nasync;		/* Number of ports on card */
 
 	uint		irq;		/* Interrupt request number */
-	ulong		intr_tx;	/* Count of interrupts */
 	ulong		intr_rx;	/* Count of interrupts */
 
 	ulong		membase;	/* Start of base memory of the card */
diff --git a/drivers/staging/dgnc/dgnc_neo.c b/drivers/staging/dgnc/dgnc_neo.c
index a3e100b..5f3eacdf 100644
--- a/drivers/staging/dgnc/dgnc_neo.c
+++ b/drivers/staging/dgnc/dgnc_neo.c
@@ -410,7 +410,6 @@ static inline void neo_parse_isr(struct dgnc_board *brd, uint port)
 		}
 
 		if (isr & UART_IIR_THRI) {
-			brd->intr_tx++;
 			ch->ch_intr_tx++;
 			/* Transfer data (if any) from Write Queue -> UART. */
 			spin_lock_irqsave(&ch->ch_lock, flags);
@@ -550,7 +549,6 @@ static inline void neo_parse_lsr(struct dgnc_board *brd, uint port)
 	}
 
 	if (linestatus & UART_LSR_THRE) {
-		brd->intr_tx++;
 		ch->ch_intr_tx++;
 		spin_lock_irqsave(&ch->ch_lock, flags);
 		ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
@@ -559,7 +557,6 @@ static inline void neo_parse_lsr(struct dgnc_board *brd, uint port)
 		/* Transfer data (if any) from Write Queue -> UART. */
 		neo_copy_data_from_queue_to_uart(ch);
 	} else if (linestatus & UART_17158_TX_AND_FIFO_CLR) {
-		brd->intr_tx++;
 		ch->ch_intr_tx++;
 		spin_lock_irqsave(&ch->ch_lock, flags);
 		ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
-- 
1.9.1