[reactos] 01/03: [PORTCLS] Don't unnecessarily wait for lower drivers to complete power IRPs. CORE-16611

[Thomas Faber]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=606c912aa45b84e346de1…

commit 606c912aa45b84e346de14181e7fdd433d9db667
Author:     Thomas Faber <thomas.faber(a)reactos.org>
AuthorDate: Sat Feb 1 13:03:37 2020 +0100
Commit:     Thomas Faber <thomas.faber(a)reactos.org>
CommitDate: Sat Feb 8 13:07:34 2020 +0100

    [PORTCLS] Don't unnecessarily wait for lower drivers to complete power IRPs.
CORE-16611
    
    Also use PoCallDriver to forward power IRPs.
---
 drivers/wdm/audio/backpln/portcls/irp.cpp | 51 +++++++++----------------------
 1 file changed, 14 insertions(+), 37 deletions(-)

diff --git a/drivers/wdm/audio/backpln/portcls/irp.cpp
b/drivers/wdm/audio/backpln/portcls/irp.cpp
index aab59ca31fc..c1708c416c6 100644
--- a/drivers/wdm/audio/backpln/portcls/irp.cpp
+++ b/drivers/wdm/audio/backpln/portcls/irp.cpp
@@ -221,26 +221,17 @@ PortClsPower(
     // get currrent stack location
     IoStack = IoGetCurrentIrpStackLocation(Irp);
 
+    // get device extension
+    DeviceExtension = (PPCLASS_DEVICE_EXTENSION) DeviceObject->DeviceExtension;
+
     if (IoStack->MinorFunction != IRP_MN_SET_POWER &&
IoStack->MinorFunction != IRP_MN_QUERY_POWER)
     {
-        // just forward the request
-        Status = PcForwardIrpSynchronous(DeviceObject, Irp);
-
-        // start next power irp
+        // forward unknown requests down the stack and forget
         PoStartNextPowerIrp(Irp);
-
-        // complete request
-        Irp->IoStatus.Status = Status;
-        IoCompleteRequest(Irp, IO_NO_INCREMENT);
-
-        // done
-        return Status;
+        IoSkipCurrentIrpStackLocation(Irp);
+        return PoCallDriver(DeviceExtension->PrevDeviceObject, Irp);
     }
 
-
-    // get device extension
-    DeviceExtension = (PPCLASS_DEVICE_EXTENSION) DeviceObject->DeviceExtension;
-
     // get current request type
     if (IoStack->Parameters.Power.Type == DevicePowerState)
     {
@@ -250,8 +241,10 @@ PortClsPower(
             // nothing has changed
             if (IoStack->MinorFunction == IRP_MN_QUERY_POWER)
             {
-                // only forward query requests
-                Status = PcForwardIrpSynchronous(DeviceObject, Irp);
+                // only forward query requests; we can forget about them
+                PoStartNextPowerIrp(Irp);
+                IoSkipCurrentIrpStackLocation(Irp);
+                return PoCallDriver(DeviceExtension->PrevDeviceObject, Irp);
             }
 
             // start next power irp
@@ -279,17 +272,9 @@ PortClsPower(
             }
 
             // only forward query requests
-            PcForwardIrpSynchronous(DeviceObject, Irp);
-
-            // start next power irp
             PoStartNextPowerIrp(Irp);
-
-            // complete request
-            Irp->IoStatus.Status = Status;
-            IoCompleteRequest(Irp, IO_NO_INCREMENT);
-
-            // done
-            return Status;
+            IoSkipCurrentIrpStackLocation(Irp);
+            return PoCallDriver(DeviceExtension->PrevDeviceObject, Irp);
         }
         else
         {
@@ -371,17 +356,9 @@ PortClsPower(
             DeviceExtension->SystemPowerState =
IoStack->Parameters.Power.State.SystemState;
 
             // only forward query requests
-            Status = PcForwardIrpSynchronous(DeviceObject, Irp);
-
-            // start next power irp
             PoStartNextPowerIrp(Irp);
-
-            // complete request
-            Irp->IoStatus.Status = Status;
-            IoCompleteRequest(Irp, IO_NO_INCREMENT);
-
-            // done
-            return Status;
+            IoSkipCurrentIrpStackLocation(Irp);
+            return PoCallDriver(DeviceExtension->PrevDeviceObject, Irp);
         }
     }
 }