diff options
author | Jan-Simon Möller <dl9pf@gmx.de> | 2013-08-29 18:09:24 (GMT) |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-09-02 10:32:58 (GMT) |
commit | 06e710bd5faa886e9b5d032d375761de28fcef54 (patch) | |
tree | 898bb109e6dbe7e0d67b2a3b696c823a1b024fa5 /kernel | |
parent | 069fa0453f9dc86fd97dd5b3f5fda4724ed5ff69 (diff) | |
download | linux-06e710bd5faa886e9b5d032d375761de28fcef54.tar.xz |
crypto: fcrypt - Fix bitoperation for compilation with clang
v2: Fix bug in statement as pointed out by Herbert Xu. Kudos to pipacs.
Author: PaX Team <pageexec at freemail.hu>
ML-Post: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120507/142707.html
URL: http://llvm.linuxfoundation.org
Merge: Jan-Simon Möller <dl9pf at gmx.de>
Description:
Fix for warning:
linux/crypto/fcrypt.c:143:47: warning: signed shift result (0x598000000) requires 36 bits to
represent, but 'int' only has 32 bits [-Wshift-overflow]
Z(0xef), Z(0x70), Z(0xcf), Z(0xc2), Z(0x2a), Z(0xb3), Z(0x61), Z(0xad),
^~~~~~~
linux/crypto/fcrypt.c:113:29: note: expanded from macro 'Z'
^ ~~
linux/include/uapi/linux/byteorder/little_endian.h:38:53: note: expanded from macro
'__cpu_to_be32'
^
linux/include/uapi/linux/swab.h:116:21: note: expanded from macro '__swab32'
___constant_swab32(x) : \
^
linux/include/uapi/linux/swab.h:18:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \
^
Solution - make sure we don't exceed the 32 bit range.
#define Z(x) cpu_to_be32(((x & 0x1f) << 27) | (x >> 5))
Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de>
CC: pageexec@freemail.hu
CC: llvmlinux@lists.linuxfoundation.org
CC: behanw@converseincode.com
CC: herbert@gondor.apana.org.au
CC: davem@davemloft.net
CC: linux-crypto@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions