drivers/net/ni65.c: fix sparse warnings: fix signedness

Fix this sparse warnings:
  drivers/net/ni65.c:488:36: warning: incorrect type in argument 2 (different signedness)

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/ni65.c b/drivers/net/ni65.c
index d769a88ddc98..df5f869e8d8f 100644
--- a/drivers/net/ni65.c
+++ b/drivers/net/ni65.c
@@ -481,8 +481,9 @@ static int __init ni65_probe1(struct net_device *dev,int ioaddr)
         else {
                 if(dev->dma == 0) {
                 /* 'stuck test' from lance.c */
-                        long dma_channels = ((inb(DMA1_STAT_REG) >> 4) & 0x0f) |
-                                            (inb(DMA2_STAT_REG) & 0xf0);
+                        unsigned long dma_channels =
+                                ((inb(DMA1_STAT_REG) >> 4) & 0x0f)
+                                | (inb(DMA2_STAT_REG) & 0xf0);
                         for(i=1;i<5;i++) {
                                 int dma = dmatab[i];
                                 if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510"))