ath9k: Clarify we only want 32-bit DMA

Use DMA_32BIT_MASK to clarify we only want 32-bit DMA
memory. What was there before is also 32-bit but this makes it
clearer

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index c928db9..9d64ef5 100644 (file)
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -1591,9 +1591,8 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
        if (pci_enable_device(pdev))
                return -EIO;
 
-       /* XXX 32-bit addressing only */
-       if (pci_set_dma_mask(pdev, 0xffffffff)) {
-               printk(KERN_ERR "ath_pci: 32-bit DMA not available\n");
+       if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+               printk(KERN_ERR "ath9k: 32-bit DMA not available\n");
                ret = -ENODEV;
                goto bad;
        }