[janderwald] 51067: [WDMAUD_KERNEL] - Don't alter the IoStatus.Information field with the number of bytes written - Fixes sndrec32 crash (now also working in ReactOS) - Should be merged to 0.3.13 ; )

Author: janderwald
Date: Wed Mar 16 15:18:52 2011
New Revision: 51067

URL: http://svn.reactos.org/svn/reactos?rev=51067&view=rev
Log:
[WDMAUD_KERNEL]
- Don't alter the IoStatus.Information field with the number of bytes written
- Fixes sndrec32 crash (now also working in ReactOS)
- Should be merged to 0.3.13 ;)

Modified:
    trunk/reactos/drivers/wdm/audio/legacy/wdmaud/control.c

Modified: trunk/reactos/drivers/wdm/audio/legacy/wdmaud/control.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/wdm/audio/legacy/wd...
==============================================================================
--- trunk/reactos/drivers/wdm/audio/legacy/wdmaud/control.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/wdm/audio/legacy/wdmaud/control.c [iso-8859-1] Wed Mar 16 15:18:52 2011
@@ -402,28 +402,6 @@
     /* sanity check */
     ASSERT(Header);

-    /* iterate through all stream headers and collect size */
-    do
-    {
-        if (Context->Function == IOCTL_KS_READ_STREAM)
-        {
-            /* length is stored in DataUsed */
-            Length += Header->DataUsed;
-        }
-        else
-        {
-            /* length stored in frameextend */
-            Length += Header->FrameExtent;
-        }
-
-        /* subtract size */
-        Context->Length -= Header->Size;
-
-        /* move to next stream header */
-        Header = (PKSSTREAM_HEADER)((ULONG_PTR)Header + Header->Size);
-
-    }while(Context->Length);
-
     /* time to free all allocated mdls */
     Mdl = Irp->MdlAddress;

@@ -454,12 +432,7 @@

DPRINT("IoCompletion Irp %p IoStatus %lx Information %lx Length %lu\n", Irp, Irp->IoStatus.Status, Irp->IoStatus.Information, Length);

-    if (Irp->IoStatus.Status == STATUS_SUCCESS)
-    {
-        /* store the length */
-        Irp->IoStatus.Information = Length;
-    }
-    else
+    if (!NT_SUCCESS(Irp->IoStatus.Status))
     {
         /* failed */
         Irp->IoStatus.Information = 0;
@@ -470,7 +443,6 @@

return STATUS_SUCCESS;
 }
-

NTSTATUS
 NTAPI