From 63625b43e9009833183f1921ed3753ba35d9261f Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Mon, 30 Nov 2020 17:08:58 +0000 Subject: [efi] Allow vetoing of drivers that cannot be unloaded Some UEFI drivers (observed with the "Usb Xhci Driver" on an HP EliteBook) are particularly badly behaved: they cannot be unloaded and will leave handles opened with BY_DRIVER attributes even after disconnecting the driver, thereby preventing a replacement iPXE driver from opening the handle. Allow such drivers to be vetoed by falling back to a brute-force mechanism that will disconnect the driver from all handles, uninstall the driver binding protocol (to prevent it from attaching to any new handles), and finally close any stray handles that the vetoed driver has left open. Signed-off-by: Michael Brown --- src/include/ipxe/efi/efi_veto.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/include') diff --git a/src/include/ipxe/efi/efi_veto.h b/src/include/ipxe/efi/efi_veto.h index f0c225543..c9ecbb05c 100644 --- a/src/include/ipxe/efi/efi_veto.h +++ b/src/include/ipxe/efi/efi_veto.h @@ -8,6 +8,6 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); -extern void efi_veto_unload ( void ); +extern void efi_veto ( void ); #endif /* _IPXE_EFI_VETO_H */ -- cgit v1.2.3-55-g7522