diff --git a/kernel/branches/net/drivers/bus/pci.inc b/kernel/branches/net/drivers/bus/pci.inc
index 26a497e4fa..6b105f71f1 100644
--- a/kernel/branches/net/drivers/bus/pci.inc
+++ b/kernel/branches/net/drivers/bus/pci.inc
@@ -114,11 +114,20 @@ macro   make_bus_master bus, dev {
         movzx   ecx, bus
         movzx   edx, dev
         stdcall PciRead32, ecx ,edx, PCI_REG_COMMAND
-
-        or      al, PCI_BIT_MASTER ;or PCI_BIT_PIO
-;        and     al, not PCI_BIT_MMIO
+        or      al, PCI_BIT_MASTER
         stdcall PciWrite32, ecx, edx, PCI_REG_COMMAND, eax
 
-;; TODO: try to switch to PIO, and check if PIO works or not..
+}
 
-}
\ No newline at end of file
+macro   adjust_latency bus, dev, min {
+
+        movzx   ecx, bus
+        movzx   edx, dev
+        stdcall PciRead8, ecx ,edx, PCI_REG_LATENCY
+        cmp     al, min
+        ja      @f
+        mov     al, min
+        stdcall PciWrite8, ecx, edx, PCI_REG_LATENCY, eax
+  @@:
+
+}