[rtl8139] Perform only 8-bit ioport access on the ChipCmd register

The ChipCmd register is only an 8-bit register. The 16-bit access used by iPXE was causing an issue when used with qemu emulated rtl8139 device which was improperly aligning IOs. Signed-off-by: Julian Pidancet <julian.pidancet@gmail.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
ipxe · Nov 14, 2011 · 91dd64a · 91dd64a
1 parent caf98cf
commit 91dd64a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/drivers/net/rtl8139.c b/src/drivers/net/rtl8139.c
@@ -434,7 +434,7 @@ static void rtl_poll ( struct net_device *netdev ) {
 	}
 
 	/* Handle received packets */
-	while ( ! ( inw ( rtl->ioaddr + ChipCmd ) & RxBufEmpty ) ) {
+	while ( ! ( inb ( rtl->ioaddr + ChipCmd ) & RxBufEmpty ) ) {
 		rx_status = * ( ( uint16_t * )
 				( rtl->rx.ring + rtl->rx.offset ) );
 		rx_len = * ( ( uint16_t * )