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IntelFrameworkModulePkg: Modify IsaSerialDxe to follow driver rules 

IsaSerialDxe creates child handles and wishes to retrieve the name for
those child controllers.

However, in the IsaSerialComponentNameGetControllerName() function, it
directly return EFI_UNSUPPORTED when ChildHandle != NULL.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17289 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Hao Wu 2015-05-05 02:34:20 +00:00 committed by hwu1225
parent 724dcbb272
commit bc19591807
1 changed files with 37 additions and 27 deletions
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64
IntelFrameworkModulePkg/Bus/Isa/IsaSerialDxe/ComponentName.c
View File

@ -180,16 +180,11 @@ IsaSerialComponentNameGetControllerName (
OUT CHAR16 **ControllerName
)
{
EFI_STATUS Status;
EFI_SERIAL_IO_PROTOCOL *SerialIo;
SERIAL_DEV *SerialDevice;
EFI_STATUS Status;
EFI_SERIAL_IO_PROTOCOL *SerialIo;
SERIAL_DEV *SerialDevice;
EFI_UNICODE_STRING_TABLE *ControllerNameTable;
//
// This is a device driver, so ChildHandle must be NULL.
//
if (ChildHandle != NULL) {
return EFI_UNSUPPORTED;
}
//
// Make sure this driver is currently managing ControllerHandle
//
@ -201,29 +196,44 @@ IsaSerialComponentNameGetControllerName (
if (EFI_ERROR (Status)) {
return Status;
}
//
// Get the Block I/O Protocol on Controller
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiSerialIoProtocolGuid,
(VOID **) &SerialIo,
gSerialControllerDriver.DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
ControllerNameTable = NULL;
if (ChildHandle != NULL) {
Status = EfiTestChildHandle (
ControllerHandle,
ChildHandle,
&gEfiIsaIoProtocolGuid
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Get the Serial I/O Protocol from the child handle
//
Status = gBS->OpenProtocol (
ChildHandle,
&gEfiSerialIoProtocolGuid,
(VOID **) &SerialIo,
gSerialControllerDriver.DriverBindingHandle,
ChildHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Get the Serial Controller's Device structure
//
SerialDevice = SERIAL_DEV_FROM_THIS (SerialIo);
ControllerNameTable = SerialDevice->ControllerNameTable;
}
//
// Get the Serial Controller's Device structure
//
SerialDevice = SERIAL_DEV_FROM_THIS (SerialIo);
return LookupUnicodeString2 (
Language,
This->SupportedLanguages,
SerialDevice->ControllerNameTable,
ControllerNameTable,
ControllerName,
(BOOLEAN)(This == &gIsaSerialComponentName)
);