Re: [PATCH v2] OvmfPkg/XenBusDxe: Close XenIoProtocol openned by children

["Laszlo Ersek" <lersek@redhat.com>]

On 07/01/19 12:50, Anthony PERARD wrote:
> In XenBusDxe, the XenBusAddDevice() opens the gXenIoProtocolGuid on
> behalf of child controllers. It is never closed and prevents us from
> uninstalling the protocol.
> 
> Close it where we stop all the children in XenBusDxe->Stop().
> 
> Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
> ---
>  OvmfPkg/XenBusDxe/XenBusDxe.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/OvmfPkg/XenBusDxe/XenBusDxe.c b/OvmfPkg/XenBusDxe/XenBusDxe.c
> index 0e63707f50..7c07a96650 100644
> --- a/OvmfPkg/XenBusDxe/XenBusDxe.c
> +++ b/OvmfPkg/XenBusDxe/XenBusDxe.c
> @@ -453,6 +453,10 @@ XenBusDxeDriverBindingStop (
>        continue;
>      }
>  
> +    Status = gBS->CloseProtocol (Dev->ControllerHandle, &gXenIoProtocolGuid,
> +                    Dev->This->DriverBindingHandle, ChildData->Handle);
> +    ASSERT_EFI_ERROR (Status);
> +
>      Status = gBS->UninstallMultipleProtocolInterfaces (
>                 ChildData->Handle,
>                 &gEfiDevicePathProtocolGuid, ChildData->DevicePath,
> 

Commit 64ef66ba8b41.

Thanks
Laszlo