Reviewed-By: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>
> -----Original Message-----
> From: Dimitrije Pavlov <dimitrije.pav...@arm.com>
> Sent: Wednesday, August 17, 2022 10:35 AM
> To: devel@edk2.groups.io
> Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org>; Jiewen Yao
> <jiewen....@intel.com>; Liming Gao <gaolim...@byosoft.com.cn>; Sunny
> Wang <sunny.w...@arm.com>; Jeff Booher-Kaeding <Jeff.Booher-
> kaed...@arm.com>; Samer El-Haj-Mahmoud <Samer.El-Haj-
> mahm...@arm.com>
> Subject: [PATCH v1 1/1] OvmfPkg/VirtioNetDxe: Check ChildHandle argument in
> GetControllerName
>
> Per the UEFI specification, a device driver implementation should return
> EFI_UNSUPPORTED if the ChildHandle argument in
> EFI_COMPONENT_NAME2_PROTOCOL.GetControllerName() is not NULL.
>
> Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org>
> Cc: Jiewen Yao <jiewen....@intel.com>
> Cc: Liming Gao <gaolim...@byosoft.com.cn>
> Cc: Sunny Wang <sunny.w...@arm.com>
> Cc: Jeff Booher-Kaeding <jeff.booher-kaed...@arm.com>
> Cc: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>
>
> Signed-off-by: Dimitrije Pavlov <dimitrije.pav...@arm.com>
> ---
> OvmfPkg/VirtioNetDxe/ComponentName.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/OvmfPkg/VirtioNetDxe/ComponentName.c
> b/OvmfPkg/VirtioNetDxe/ComponentName.c
> index e340ca2f8fe4..718096630f6f 100644
> --- a/OvmfPkg/VirtioNetDxe/ComponentName.c
> +++ b/OvmfPkg/VirtioNetDxe/ComponentName.c
> @@ -129,6 +129,13 @@ VirtioNetGetControllerName (
> return EFI_INVALID_PARAMETER;
> }
>
> + //
> + // This is a device driver, so ChildHandle must be NULL.
> + //
> + if (ChildHandle != NULL) {
> + return EFI_UNSUPPORTED;
> + }
> +
> //
> // confirm that the device is managed by this driver, using the VirtIo
> // Protocol
> --
> 2.37.2
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