/* mpi-cmp.c - MPI functions * Copyright (C) 1998, 1999 Free Software Foundation, Inc. * * This file is part of GnuPG. * * GnuPG is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * GnuPG is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */ #include "mpi-internal.h" int mpi_cmp_ui(MPI u, unsigned long v) { mpi_limb_t limb = v; mpi_normalize(u); if (!u->nlimbs && !limb) return 0; if (u->sign) return -1; if (u->nlimbs > 1) return 1; if (u->d[0] == limb) return 0; else if (u->d[0] > limb) return 1; else return -1; } EXPORT_SYMBOL_GPL(mpi_cmp_ui); int mpi_cmp(MPI u, MPI v) { mpi_size_t usize, vsize; int cmp; mpi_normalize(u); mpi_normalize(v); usize = u->nlimbs; vsize = v->nlimbs; if (!u->sign && v->sign) return 1; if (u->sign && !v->sign) return -1; if (usize != vsize && !u->sign && !v->sign) return usize - vsize; if (usize != vsize && u->sign && v->sign) return vsize - usize; if (!usize) return 0; cmp = mpihelp_cmp(u->d, v->d, usize); if (u->sign) return -cmp; return cmp; } EXPORT_SYMBOL_GPL(mpi_cmp); 277953de2f31dd03c6375e9a9f680ac37fc9d27'>refslogtreecommitdiff
path: root/include/net/irda/ircomm_lmp.h
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authorzhong jiang <zhongjiang@huawei.com>2017-01-24 15:18:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-24 16:26:14 -0800
commit3277953de2f31dd03c6375e9a9f680ac37fc9d27 (patch)
tree6ba22924faa1b82ef2f0277db10a3f5abdc44157 /include/net/irda/ircomm_lmp.h
parent3705ccfdd1e8b539225ce20e3925a945cc788d67 (diff)
mm: do not export ioremap_page_range symbol for external module
Recently, I've found cases in which ioremap_page_range was used incorrectly, in external modules, leading to crashes. This can be partly attributed to the fact that ioremap_page_range is lower-level, with fewer protections, as compared to the other functions that an external module would typically call. Those include: ioremap_cache ioremap_nocache ioremap_prot ioremap_uc ioremap_wc ioremap_wt ...each of which wraps __ioremap_caller, which in turn provides a safer way to achieve the mapping. Therefore, stop EXPORT-ing ioremap_page_range. Link: http://lkml.kernel.org/r/1485173220-29010-1-git-send-email-zhongjiang@huawei.com Signed-off-by: zhong jiang <zhongjiang@huawei.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Suggested-by: John Hubbard <jhubbard@nvidia.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/net/irda/ircomm_lmp.h')