[cgutman] 54372: [NDIS] - Fix a critical bug in NdisMGetDmaAlignment which was causing every NIC driver calling this function to crash because we thought we were passed an NDIS_DMA_BLOCK handle whe...

Author: cgutman
Date: Sun Nov 13 06:02:08 2011
New Revision: 54372

URL: http://svn.reactos.org/svn/reactos?rev=54372&view=rev
Log:
[NDIS]
- Fix a critical bug in NdisMGetDmaAlignment which was causing every NIC driver calling
this function to crash because we thought we were passed an NDIS_DMA_BLOCK handle when in
fact we receive an NDIS_MINIPORT_BLOCK handle
- Fixes RTL8169 and 3Com NICs (and probably several more) [bug 6651 and bug 4330]

Modified:
    trunk/reactos/drivers/network/ndis/ndis/io.c

Modified: trunk/reactos/drivers/network/ndis/ndis/io.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/network/ndis/ndis/…
==============================================================================
--- trunk/reactos/drivers/network/ndis/ndis/io.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/network/ndis/ndis/io.c [iso-8859-1] Sun Nov 13 06:02:08 2011
@@ -831,6 +831,7 @@
 NdisMReadDmaCounter(
     IN  NDIS_HANDLE MiniportDmaHandle)
 {
+  /* NOTE: Unlike NdisMGetDmaAlignment() below, this is a handle to the DMA block */
   PNDIS_DMA_BLOCK DmaBlock = MiniportDmaHandle;
   PDMA_ADAPTER AdapterObject = (PDMA_ADAPTER)DmaBlock->SystemAdapterObject;
 
@@ -846,10 +847,11 @@
 ULONG
 EXPORT
 NdisMGetDmaAlignment(
-    IN  NDIS_HANDLE MiniportDmaHandle)
-{
-  PNDIS_DMA_BLOCK DmaBlock = MiniportDmaHandle;
-  PDMA_ADAPTER AdapterObject = (PDMA_ADAPTER)DmaBlock->SystemAdapterObject;
+    IN  NDIS_HANDLE MiniportAdapterHandle)
+{
+  /* NOTE: Unlike NdisMReadDmaCounter() above, this is a handle to the NDIS miniport
block */
+  PLOGICAL_ADAPTER Adapter = MiniportAdapterHandle;
+  PDMA_ADAPTER AdapterObject =
(PDMA_ADAPTER)Adapter->NdisMiniportBlock.SystemAdapterObject;
 
   NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));