/* 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); slogtreecommitdiff
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authorJohan Hovold <johan@kernel.org>2017-01-30 11:26:38 +0100
committerJiri Kosina <jkosina@suse.cz>2017-01-31 12:59:32 +0100
commit7a7b5df84b6b4e5d599c7289526eed96541a0654 (patch)
treecf7514c7ddf4410fe37ca9099a2785e1cf08fa7d /net/6lowpan/nhc_udp.c
parent877a021e08ccb6434718c0cc781fdf943c884cc0 (diff)
HID: cp2112: fix sleep-while-atomic
A recent commit fixing DMA-buffers on stack added a shared transfer buffer protected by a spinlock. This is broken as the USB HID request callbacks can sleep. Fix this up by replacing the spinlock with a mutex. Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable") Cc: stable <stable@vger.kernel.org> # 4.9 Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'net/6lowpan/nhc_udp.c')