jsm: remove remaining flip buffer code

The flip buffer is not used anymore. Remove its allocation and
declaration in the board structure.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 0 insertions, 21 deletions

diff --git a/drivers/tty/serial/jsm/jsm.h b/drivers/tty/serial/jsm/jsm.h
index b704c8ce0d71..cd53bdda77ce 100644
--- a/drivers/tty/serial/jsm/jsm.h
+++ b/drivers/tty/serial/jsm/jsm.h
@@ -88,7 +88,6 @@ enum {
 
 /* 4 extra for alignment play space */
 #define WRITEBUFLEN     ((4096) + 4)
-#define MYFLIPLEN       N_TTY_BUF_SIZE
 
 #define JSM_VERSION     "jsm: 1.2-1-INKERNEL"
 #define JSM_PARTNUM     "40002438_A-INKERNEL"
@@ -150,7 +149,6 @@ struct jsm_board
         u32             bd_uart_offset; /* Space between each UART */
 
         struct jsm_channel *channels[MAXPORTS]; /* array of pointers to our channels. */
-        char            *flipbuf;       /* Our flip buffer, alloced if board is found */
 
         u32             bd_dividend;    /* Board/UARTs specific dividend */
 
@@ -177,7 +175,6 @@ struct jsm_board
 #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 */
 
 /* Our Read/Error/Write queue sizes */
diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c
index 96da17868cf3..1cc8cf602af8 100644
--- a/drivers/tty/serial/jsm/jsm_driver.c
+++ b/drivers/tty/serial/jsm/jsm_driver.c
@@ -160,27 +160,10 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device
         dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n",
                         adapter_count, brd->rev, brd->irq);
 
-        /*
-         * 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);
-        if (!brd->flipbuf) {
-                /* XXX: leaking all resources from jsm_tty_init and
-                        jsm_uart_port_init here! */
-                dev_err(&pdev->dev, "memory allocation for flipbuf failed\n");
-                rc = -ENOMEM;
-                goto out_free_uart;
-        }
-
         pci_set_drvdata(pdev, brd);
         pci_save_state(pdev);
 
         return 0;
- out_free_uart:
-        jsm_remove_uart_port(brd);
  out_free_irq:
         jsm_remove_uart_port(brd);
         free_irq(brd->irq, brd);
@@ -218,7 +201,6 @@ static void __devexit jsm_remove_one(struct pci_dev *pdev)
 
         pci_release_regions(pdev);
         pci_disable_device(pdev);
-        kfree(brd->flipbuf);
         kfree(brd);
 }