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MdeModulePkg/PciBusDxe: reference gFullEnumeration in one file

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The patch is just a code cleanup with no functionality impact.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
(cherry picked from commit 2632981783)
This commit is contained in:
Ruiyu Ni
2018-01-22 14:16:10 +08:00
parent 15bb108d5f
commit 1bfcdd264a
3 changed files with 38 additions and 42 deletions
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32
MdeModulePkg/Bus/Pci/PciBusDxe/PciBus.c
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@@ -8,7 +8,7 @@
PCI Root Bridges. So it means platform needs install PCI Root Bridge IO protocol for each
PCI Root Bus and install PCI Host Bridge Resource Allocation Protocol.
Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -240,8 +240,9 @@ PciBusDriverBindingStart (
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
//
// Check RemainingDevicePath validation
@@ -321,12 +322,34 @@ PciBusDriverBindingStart (
ParentDevicePath
);
Status = EFI_SUCCESS;
//
// Enumerate the entire host bridge
// After enumeration, a database that records all the device information will be created
//
//
Status = PciEnumerator (Controller);
if (gFullEnumeration) {
//
// Get the rootbridge Io protocol to find the host bridge handle
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciRootBridgeIoProtocolGuid,
(VOID **) &PciRootBridgeIo,
gPciBusDriverBinding.DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (!EFI_ERROR (Status)) {
Status = PciEnumerator (Controller, PciRootBridgeIo->ParentHandle);
}
} else {
//
// If PCI bus has already done the full enumeration, never do it again
//
Status = PciEnumeratorLight (Controller);
}
if (EFI_ERROR (Status)) {
return Status;
@@ -337,6 +360,7 @@ PciBusDriverBindingStart (
//
StartPciDevices (Controller);
gFullEnumeration = FALSE;
return EFI_SUCCESS;
}