Ard Biesheuvel c2a000ad03 efi: efivars: Fix variable writes without query_variable_store() ... commit 8a254d90a7 upstream. Commit bbc6d2c6ef ("efi: vars: Switch to new wrapper layer") refactored the efivars layer so that the 'business logic' related to which UEFI variables affect the boot flow in which way could be moved out of it, and into the efivarfs driver. This inadvertently broke setting variables on firmware implementations that lack the QueryVariableInfo() boot service, because we no longer tolerate a EFI_UNSUPPORTED result from check_var_size() when calling efivar_entry_set_get_size(), which now ends up calling check_var_size() a second time inadvertently. If QueryVariableInfo() is missing, we support writes of up to 64k - let's move that logic into check_var_size(), and drop the redundant call. Cc: <stable@vger.kernel.org> # v6.0 Fixes: bbc6d2c6ef ("efi: vars: Switch to new wrapper layer") Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-10-26 12:22:57 +02:00
..
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	efi: vars: Move efivar caching layer into efivarfs	2022-06-24 20:40:19 +02:00
file.c	efivars: convert to fileattr	2021-04-12 15:04:29 +02:00
inode.c	efivars: convert to fileattr	2021-04-12 15:04:29 +02:00
internal.h	efi: vars: Move efivar caching layer into efivarfs	2022-06-24 20:40:19 +02:00
super.c	efi: vars: Use locking version to iterate over efivars linked lists	2022-06-24 20:40:19 +02:00
vars.c	efi: efivars: Fix variable writes without query_variable_store()	2022-10-26 12:22:57 +02:00