Small optimization, if dma addresses are 32 bits, then high
bits are always zero.
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
--- sky2-2.6.orig/drivers/net/sky2.c
+++ sky2-2.6/drivers/net/sky2.c
@@ -745,7 +745,7 @@ static inline struct sky2_rx_le *sky2_ne
/* Return high part of DMA address (could be 32 or 64 bit) */
static inline u32 high32(dma_addr_t a)
{
- return (a >> 16) >> 16;
+ return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
}
/* Build description to hardware about buffer */
@@ -1225,7 +1225,7 @@ static int sky2_xmit_frame(struct sk_buf
mapping = pci_map_page(hw->pdev, frag->page, frag->page_offset,
frag->size, PCI_DMA_TODEVICE);
- addr64 = (mapping >> 16) >> 16;
+ addr64 = high32(mapping);
if (addr64 != sky2->tx_addr64) {
le = get_tx_le(sky2);
le->tx.addr = cpu_to_le32(addr64);
--
Stephen Hemminger <[EMAIL PROTECTED]>
OSDL http://developer.osdl.org/~shemminger
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