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Commit8a254d90a7("efi: efivars: Fix variable writes without query_variable_store()") addressed an issue that was introduced during the EFI variable store refactor, where alternative implementations of the efivars layer that lacked query_variable_store() would no longer work. Unfortunately, there is another case to consider here, which was missed: if the efivars layer is backed by the EFI runtime services as usual, but the EFI implementation predates the introduction of QueryVariableInfo(), we will return EFI_UNSUPPORTED, and this is no longer being dealt with correctly. So let's fix this, and while at it, clean up the code a bit, by merging the check_var_size() routines as well as their callers. Cc: <stable@vger.kernel.org> # v6.0 Fixes:bbc6d2c6ef("efi: vars: Switch to new wrapper layer") Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Aditya Garg <gargaditya08@live.com>