staging: dgnc: delete all references to 'flipbuf'

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: Gujulan Elango Hari Prasath <hgujulan@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index 805dc617e3a787b86a38142d2760fa8cdc2e4ed5..7546aff6500243cda1e9806c4070ec9827c528a6 100644 (file)
--- 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 f77fed57b873623745bb5818536b31f257aa22a8..3dee9f392fb3bf37e662685ac37b5b44e8a84386 100644 (file)
--- a/drivers/staging/dgnc/dgnc_driver.h
+++ b/drivers/staging/dgnc/dgnc_driver.h
@@ -212,8 +212,6 @@ struct dgnc_board {
 
        uint            TtyRefCnt;
 
-       char            *flipbuf;       /* Our flip buffer, alloced if board is found */
-
        u16             dpatype;        /* The board "type", as defined by DPA */
        u16             dpastatus;      /* The board "status", as defined by DPA */
 
@@ -288,7 +286,6 @@ 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    */