[PATCHv2 1/2] staging: dgnc: delete all references to 'flipbuf'

[Gujulan Elango, Hari Prasath (H.)]

From: Hari Prasath Gujulan Elango <hgujulan at visteon.com>

This patch deletes all references to 'flipbuf'.Memory is allocated and
freed but never used anywhere in the driver.Also deleted an ununsed
Macro defined in the header file.

Signed-off-by: Hari Prasath Gujulan Elango <hgujulan at visteon.com>
---
 drivers/staging/dgnc/dgnc_driver.c | 9 ---------
 drivers/staging/dgnc/dgnc_driver.h | 1 -
 2 files changed, 10 deletions(-)

diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index 805dc61..7546aff 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -355,7 +355,6 @@ static void dgnc_cleanup_board(struct dgnc_board *brd)
 		}
 	}
 
-	kfree(brd->flipbuf);
 
 	dgnc_Board[brd->boardnum] = NULL;
 
@@ -581,14 +580,6 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
 	brd->msgbuf_head = NULL;
 	spin_unlock_irqrestore(&dgnc_global_lock, flags);
 
-	/*
-	 * allocate flip buffer for board.
-	 *
-	 * Okay to malloc with GFP_KERNEL, we are not at interrupt
-	 * context, and there are no locks held.
-	 */
-	brd->flipbuf = kzalloc(MYFLIPLEN, GFP_KERNEL);
-
 	wake_up_interruptible(&brd->state_wait);
 
 	return 0;
diff --git a/drivers/staging/dgnc/dgnc_driver.h b/drivers/staging/dgnc/dgnc_driver.h
index f77fed5..de9e71c 100644
--- a/drivers/staging/dgnc/dgnc_driver.h
+++ b/drivers/staging/dgnc/dgnc_driver.h
@@ -288,7 +288,6 @@ struct un_t {
 #define CH_TX_FIFO_LWM  0x0800		/* TX Fifo is below Low Water	*/
 #define CH_BREAK_SENDING 0x1000		/* Break is being sent		*/
 #define CH_LOOPBACK 0x2000		/* Channel is in lookback mode	*/
-#define CH_FLIPBUF_IN_USE 0x4000	/* Channel's flipbuf is in use	*/
 #define CH_BAUD0	0x08000		/* Used for checking B0 transitions */
 #define CH_FORCED_STOP  0x20000		/* Output is forcibly stopped	*/
 #define CH_FORCED_STOPI 0x40000		/* Input is forcibly stopped	*/
-- 
1.9.1