Fixed bug in partition driver:

When Block I/O detects the media changed, block driver will reinstall block I/O protocol. If it happened during start() of partition driver, the reinstall protocol would results in the reentrant of the start(). In the patch, we check status of child detection to see whether need clean up the opened block I/O protocol in Start().

Besides, some checking of return status added in usbbus driver to improve robusticiy of the driver.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2288 6f19259b-4bc3-4df7-8a09-765794883524

EdkModulePkg/Bus/Usb/UsbBus/Dxe/usbbus.c

@@ -1276,6 +1276,7 @@ UsbDeviceDeConfiguration (
   USB_IO_DEVICE             *ChildDevice;
   UINT8                     Index;
   EFI_USB_IO_PROTOCOL       *UsbIo;
+  EFI_STATUS                Status;
 
   //
   // Double check UsbIoDevice exists
@@ -1365,7 +1366,7 @@ UsbDeviceDeConfiguration (
     // Uninstall EFI_USB_IO_PROTOCOL & DEVICE_PATH_PROTOCOL
     // installed on this handle
     //
-    gBS->UninstallMultipleProtocolInterfaces (
+    Status = gBS->UninstallMultipleProtocolInterfaces (
                     UsbController->Handle,
                     &gEfiDevicePathProtocolGuid,
                     UsbController->DevicePath,
@@ -1373,6 +1374,9 @@ UsbDeviceDeConfiguration (
                     &UsbController->UsbIo,
                     NULL
                     );
+    if (EFI_ERROR (Status)) {
+      return Status;
+    }
 
     if (UsbController->DevicePath != NULL) {
       gBS->FreePool (UsbController->DevicePath);

EdkModulePkg/Universal/Disk/Partition/Dxe/ElTorito.c

@@ -23,7 +23,7 @@ Revision History
 
 #include "Partition.h"
 
-BOOLEAN
+EFI_STATUS
 PartitionInstallElToritoChildHandles (
   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
   IN  EFI_HANDLE                   Handle,
@@ -44,8 +44,9 @@ Arguments:
   DevicePath - Parent Device Path
 
 Returns:
-  TRUE       - some child handle(s) was added
+  EFI_SUCCESS       - some child handle(s) was added
-  FALSE      - no child handle was added
+  EFI_MEDIA_CHANGED - Media changed Detected
+  !EFI_SUCCESS      - no child handle was added
 
 --*/
 {
@@ -63,10 +64,10 @@ Returns:
   CDROM_DEVICE_PATH       CdDev;
   UINT32                  SubBlockSize;
   UINT32                  SectorCount;
-  BOOLEAN                 Found;
+  EFI_STATUS              Found;
   UINT32                  VolSpaceSize;
 
-  Found         = FALSE;
+  Found         = EFI_NOT_FOUND;
   Media         = BlockIo->Media;
   VolSpaceSize  = 0;
 
@@ -74,13 +75,13 @@ Returns:
   // CD_ROM has the fixed block size as 2048 bytes
   //
   if (Media->BlockSize != 2048) {
-    return FALSE;
+    return EFI_NOT_FOUND;
   }
 
   VolDescriptor = AllocatePool ((UINTN) Media->BlockSize);
 
   if (VolDescriptor == NULL) {
-    return FALSE;
+    return EFI_NOT_FOUND;
   }
 
   Catalog = (ELTORITO_CATALOG *) VolDescriptor;
@@ -114,6 +115,7 @@ Returns:
                         VolDescriptor
                         );
     if (EFI_ERROR (Status)) {
+      Found = Status;
       break;
     }
     //
@@ -272,7 +274,7 @@ Returns:
                 FALSE
                 );
       if (!EFI_ERROR (Status)) {
-        Found = TRUE;
+        Found = EFI_SUCCESS;
       }
     }
   }

EdkModulePkg/Universal/Disk/Partition/Dxe/Gpt.c

@@ -75,7 +75,7 @@ PartitionSetCrc (
   IN OUT EFI_TABLE_HEADER *Hdr
   );
 
-BOOLEAN
+EFI_STATUS
 PartitionInstallGptChildHandles (
   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
   IN  EFI_HANDLE                   Handle,
@@ -96,8 +96,9 @@ Arguments:
   DevicePath - Parent Device Path
 
 Returns:
-  TRUE       - Valid GPT disk
+  EFI_SUCCESS  - Valid GPT disk
-  FALSE      - Not a valid GPT disk
+  EFI_MEDIA_CHANGED - Media changed Detected
+  !EFI_SUCCESS - Not a valid GPT disk
 
 --*/
 {
@@ -110,7 +111,7 @@ Returns:
   EFI_PARTITION_ENTRY         *PartEntry;
   EFI_PARTITION_ENTRY_STATUS  *PEntryStatus;
   UINTN                       Index;
-  BOOLEAN                     GptValid;
+  EFI_STATUS                  GptValid;
   HARDDRIVE_DEVICE_PATH       HdDev;
 
   ProtectiveMbr = NULL;
@@ -125,14 +126,14 @@ Returns:
   DEBUG ((EFI_D_INFO, " BlockSize : %d \n", BlockSize));
   DEBUG ((EFI_D_INFO, " LastBlock : %x \n", LastBlock));
 
-  GptValid = FALSE;
+  GptValid = EFI_NOT_FOUND;
 
   //
   // Allocate a buffer for the Protective MBR
   //
   ProtectiveMbr = AllocatePool (BlockSize);
   if (ProtectiveMbr == NULL) {
-    return FALSE;
+    return EFI_NOT_FOUND;
   }
 
   //
@@ -146,6 +147,7 @@ Returns:
                       ProtectiveMbr
                       );
   if (EFI_ERROR (Status)) {
+    GptValid = Status;
     goto Done;
   }
   //
@@ -224,6 +226,7 @@ Returns:
                     PartEntry
                     );
   if (EFI_ERROR (Status)) {
+    GptValid = Status;
     DEBUG ((EFI_D_INFO, " Partition Entry ReadBlocks error\n"));
     goto Done;
   }
@@ -246,7 +249,7 @@ Returns:
   //
   // If we got this far the GPT layout of the disk is valid and we should return true
   //
-  GptValid = TRUE;
+  GptValid = EFI_SUCCESS;
 
   //
   // Create child device handles

EdkModulePkg/Universal/Disk/Partition/Dxe/Mbr.c

@@ -108,7 +108,7 @@ Returns:
   return MbrValid;
 }
 
-BOOLEAN
+EFI_STATUS
 PartitionInstallMbrChildHandles (
   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
   IN  EFI_HANDLE                   Handle,
@@ -130,7 +130,8 @@ Arguments:
 
 Returns:
   EFI_SUCCESS       - If a child handle was added
-  other       - A child handle was not added
+  EFI_MEDIA_CHANGED - Media changed Detected
+	!EFI_SUCCESS      - Not found MBR partition.
 
 --*/
 {
@@ -140,13 +141,13 @@ Returns:
   UINTN                     Index;
   HARDDRIVE_DEVICE_PATH     HdDev;
   HARDDRIVE_DEVICE_PATH     ParentHdDev;
-  BOOLEAN                   Found;
+  EFI_STATUS                Found;
   UINT32                    PartitionNumber;
   EFI_DEVICE_PATH_PROTOCOL  *DevicePathNode;
   EFI_DEVICE_PATH_PROTOCOL  *LastDevicePathNode;
 
   Mbr             = NULL;
-  Found           = FALSE;
+  Found           = EFI_NOT_FOUND;
 
   Mbr             = AllocatePool (BlockIo->Media->BlockSize);
   if (Mbr == NULL) {
@@ -161,6 +162,7 @@ Returns:
                       Mbr
                       );
   if (EFI_ERROR (Status) || !PartitionValidMbr (Mbr, BlockIo->Media->LastBlock)) {
+    Found = Status;
     goto Done;
   }
   //
@@ -237,7 +239,7 @@ Returns:
                 );
 
       if (!EFI_ERROR (Status)) {
-        Found = TRUE;
+        Found = EFI_SUCCESS;
       }
     }
   } else {
@@ -257,6 +259,7 @@ Returns:
                           Mbr
                           );
       if (EFI_ERROR (Status)) {
+        Found = Status;
         goto Done;
       }
 
@@ -295,7 +298,7 @@ Returns:
                 (BOOLEAN) (Mbr->Partition[0].OSIndicator == EFI_PARTITION)
                 );
       if (!EFI_ERROR (Status)) {
-        Found = TRUE;
+        Found = EFI_SUCCESS;
       }
 
       if ((Mbr->Partition[1].OSIndicator != EXTENDED_DOS_PARTITION) &&

EdkModulePkg/Universal/Disk/Partition/Dxe/Partition.c

@@ -71,6 +71,15 @@ EFI_DRIVER_BINDING_PROTOCOL gPartitionDriverBinding = {
   NULL
 };
 
+STATIC 
+PARTITION_DETECT_ROUTINE mPartitionDetectRoutineTable[] = {
+  PartitionInstallGptChildHandles,
+  PartitionInstallElToritoChildHandles,
+  PartitionInstallMbrChildHandles,
+  NULL
+};
+
+
 EFI_STATUS
 EFIAPI
 PartitionDriverBindingSupported (
@@ -212,6 +221,7 @@ PartitionDriverBindingStart (
   EFI_BLOCK_IO_PROTOCOL     *BlockIo;
   EFI_DISK_IO_PROTOCOL      *DiskIo;
   EFI_DEVICE_PATH_PROTOCOL  *ParentDevicePath;
+  PARTITION_DETECT_ROUTINE  *Routine;
 
   Status = gBS->OpenProtocol (
                   ControllerHandle,
@@ -269,32 +279,19 @@ PartitionDriverBindingStart (
     // media supports a given partition type install child handles to represent
     // the partitions described by the media.
     //
-    if (PartitionInstallGptChildHandles (
+    Routine = &mPartitionDetectRoutineTable[0];
+    while (*Routine != NULL) {
+      Status = (*Routine) (
                    This,
                    ControllerHandle,
                    DiskIo,
                    BlockIo,
                    ParentDevicePath
-          ) ||
+                   );
-
+      if (!EFI_ERROR (Status) || Status == EFI_MEDIA_CHANGED) {
-    PartitionInstallElToritoChildHandles (
+        break;
-          This,
+      }
-          ControllerHandle,
+      Routine++;
-          DiskIo,
-          BlockIo,
-          ParentDevicePath
-          ) ||
-
-    PartitionInstallMbrChildHandles (
-          This,
-          ControllerHandle,
-          DiskIo,
-          BlockIo,
-          ParentDevicePath
-          )) {
-      Status = EFI_SUCCESS;
-    } else {
-      Status = EFI_NOT_FOUND;
     }
   }
   //
@@ -303,7 +300,7 @@ PartitionDriverBindingStart (
   // driver. So don't try to close them. Otherwise, we will break the dependency
   // between the controller and the driver set up before.
   //
-  if (EFI_ERROR (Status) && !EFI_ERROR (OpenStatus)) {
+  if (EFI_ERROR (Status) && !EFI_ERROR (OpenStatus) && Status != EFI_MEDIA_CHANGED) {
     gBS->CloseProtocol (
           ControllerHandle,
           &gEfiDiskIoProtocolGuid,

EdkModulePkg/Universal/Disk/Partition/Dxe/Partition.h

@@ -92,7 +92,7 @@ PartitionInstallChildHandle (
   )
 ;
 
-BOOLEAN
+EFI_STATUS
 PartitionInstallGptChildHandles (
   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
   IN  EFI_HANDLE                   Handle,
@@ -102,7 +102,7 @@ PartitionInstallGptChildHandles (
   )
 ;
 
-BOOLEAN
+EFI_STATUS
 PartitionInstallElToritoChildHandles (
   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
   IN  EFI_HANDLE                   Handle,
@@ -112,7 +112,7 @@ PartitionInstallElToritoChildHandles (
   )
 ;
 
-BOOLEAN
+EFI_STATUS
 PartitionInstallMbrChildHandles (
   IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
   IN  EFI_HANDLE                   Handle,
@@ -122,4 +122,14 @@ PartitionInstallMbrChildHandles (
   )
 ;
 
+typedef 
+EFI_STATUS
+(*PARTITION_DETECT_ROUTINE) (
+  IN  EFI_DRIVER_BINDING_PROTOCOL  *This,
+  IN  EFI_HANDLE                   Handle,
+  IN  EFI_DISK_IO_PROTOCOL         *DiskIo,
+  IN  EFI_BLOCK_IO_PROTOCOL        *BlockIo,
+  IN  EFI_DEVICE_PATH_PROTOCOL     *DevicePath
+  );
+
 #endif