Re: [PATCH] crypto: vmx: Remove dubiously licensed crypto code

While reviewing commit 11c6e16ee13a ("crypto: vmx - Adding asm
subroutines for XTS") which adds the OpenSSL license header to
drivers/crypto/vmx/aesp8-ppc.pl licensing of this driver came into
qestion. The whole license reads:

 # Licensed under the OpenSSL license (the "License").  You may not use
 # this file except in compliance with the License.  You can obtain a
 # copy
 # in the file LICENSE in the source distribution or at
 # https://www.openssl.org/source/license.html

 #
 # ====================================================================
 # Written by Andy Polyakov [off-list ref] for the OpenSSL
 # project. The module is, however, dual licensed under OpenSSL and
 # CRYPTOGAMS licenses depending on where you obtain it. For further
 # details see http://www.openssl.org/~appro/cryptogams/.
 # ====================================================================

After seeking legal advice it is still not clear that this driver can be
legally used in Linux. In particular the "depending on where you obtain
it" part does not make it clear when you can apply the GPL and when the
OpenSSL license.

I tried contacting the author of the code for clarification but did not
hear back. In absence of clear licensing the only solution I see is
removing this code.

Signed-off-by: Michal Suchanek <redacted>
---
 MAINTAINERS                       |   12 -
 drivers/crypto/Kconfig            |    8 -
 drivers/crypto/Makefile           |    1 -
 drivers/crypto/vmx/.gitignore     |    2 -
 drivers/crypto/vmx/Kconfig        |    9 -
 drivers/crypto/vmx/Makefile       |   21 -
 drivers/crypto/vmx/aes.c          |  150 --
 drivers/crypto/vmx/aes_cbc.c      |  202 --
 drivers/crypto/vmx/aes_ctr.c      |  191 --
 drivers/crypto/vmx/aes_xts.c      |  190 --
 drivers/crypto/vmx/aesp8-ppc.h    |   25 -
 drivers/crypto/vmx/aesp8-ppc.pl   | 3789 -------------------------------------
 drivers/crypto/vmx/ghash.c        |  227 ---
 drivers/crypto/vmx/ghashp8-ppc.pl |  234 ---
 drivers/crypto/vmx/ppc-xlate.pl   |  228 ---
 drivers/crypto/vmx/vmx.c          |   88 -
 16 files changed, 5377 deletions(-)
 delete mode 100644 drivers/crypto/vmx/.gitignore
 delete mode 100644 drivers/crypto/vmx/Kconfig
 delete mode 100644 drivers/crypto/vmx/Makefile
 delete mode 100644 drivers/crypto/vmx/aes.c
 delete mode 100644 drivers/crypto/vmx/aes_cbc.c
 delete mode 100644 drivers/crypto/vmx/aes_ctr.c
 delete mode 100644 drivers/crypto/vmx/aes_xts.c
 delete mode 100644 drivers/crypto/vmx/aesp8-ppc.h
 delete mode 100644 drivers/crypto/vmx/aesp8-ppc.pl
 delete mode 100644 drivers/crypto/vmx/ghash.c
 delete mode 100644 drivers/crypto/vmx/ghashp8-ppc.pl
 delete mode 100644 drivers/crypto/vmx/ppc-xlate.pl
 delete mode 100644 drivers/crypto/vmx/vmx.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 1b0a87ffffab..fd4cbf046ab4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS

@@ -6190,18 +6190,6 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git
 S:	Maintained
 F:	arch/ia64/
 
-IBM Power VMX Cryptographic instructions
-M:	Leonidas S. Barbosa <leosilva@linux.vnet.ibm.com>
-M:	Paulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com>