atm: eni: fix uninitialized variable warning

With -O3, gcc has found an actual unintialized variable stored
into an mmio register in two instances:

drivers/atm/eni.c: In function 'discard':
drivers/atm/eni.c:465:13: error: 'dma[1]' is used uninitialized in this function [-Werror=uninitialized]
   writel(dma[i*2+1],eni_dev->rx_dma+dma_wr*8+4);
             ^
drivers/atm/eni.c:465:13: error: 'dma[3]' is used uninitialized in this function [-Werror=uninitialized]

Change the code to always write zeroes instead.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c
index b23d1e4bad33b20653b213047d815f388dfd0d47..9d0d65efcd94e97da049e48dd7e9f5aedfccc8f3 100644 (file)
--- a/drivers/atm/eni.c
+++ b/drivers/atm/eni.c
@@ -374,7 +374,7 @@ static int do_rx_dma(struct atm_vcc *vcc,struct sk_buff *skb,
                here = (eni_vcc->descr+skip) & (eni_vcc->words-1);
                dma[j++] = (here << MID_DMA_COUNT_SHIFT) | (vcc->vci
                    << MID_DMA_VCI_SHIFT) | MID_DT_JK;
-               j++;
+               dma[j++] = 0;
        }
        here = (eni_vcc->descr+size+skip) & (eni_vcc->words-1);
        if (!eff) size += skip;
@@ -447,7 +447,7 @@ static int do_rx_dma(struct atm_vcc *vcc,struct sk_buff *skb,
        if (size != eff) {
                dma[j++] = (here << MID_DMA_COUNT_SHIFT) |
                    (vcc->vci << MID_DMA_VCI_SHIFT) | MID_DT_JK;
-               j++;
+               dma[j++] = 0;
        }
        if (!j || j > 2*RX_DMA_BUF) {
                printk(KERN_CRIT DEV_LABEL "!j or j too big!!!\n");