diff options
Diffstat (limited to 'arch/powerpc/lib/checksum_wrappers.c')
| -rw-r--r-- | arch/powerpc/lib/checksum_wrappers.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/arch/powerpc/lib/checksum_wrappers.c b/arch/powerpc/lib/checksum_wrappers.c index 890d4ddd91d6..fabe4db28726 100644 --- a/arch/powerpc/lib/checksum_wrappers.c +++ b/arch/powerpc/lib/checksum_wrappers.c @@ -1,17 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* - * This program 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. - * - * This program 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. * * Copyright (C) IBM Corporation, 2010 * @@ -29,6 +17,7 @@ __wsum csum_and_copy_from_user(const void __user *src, void *dst, unsigned int csum; might_sleep(); + allow_read_from_user(src, len); *err_ptr = 0; @@ -60,6 +49,7 @@ __wsum csum_and_copy_from_user(const void __user *src, void *dst, } out: + prevent_read_from_user(src, len); return (__force __wsum)csum; } EXPORT_SYMBOL(csum_and_copy_from_user); @@ -70,6 +60,7 @@ __wsum csum_and_copy_to_user(const void *src, void __user *dst, int len, unsigned int csum; might_sleep(); + allow_write_to_user(dst, len); *err_ptr = 0; @@ -97,6 +88,7 @@ __wsum csum_and_copy_to_user(const void *src, void __user *dst, int len, } out: + prevent_write_to_user(dst, len); return (__force __wsum)csum; } EXPORT_SYMBOL(csum_and_copy_to_user); |