Messages in this thread Patch in this message |  | | | From | Marcin Slusarz <> | | Subject | [PATCH 2/6] ERR_PTR: add ERR_OR_0_PTR | | Date | Mon, 19 May 2008 00:01:07 +0200 |
| |
Some codepaths call ERR_PTR with possibly 0 argument, which is not a valid errno and rely on conversion from 0 to NULL pointer. Add ERR_OR_0_PTR function which accepts errnos and 0 as an argument.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> --- include/linux/err.h | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/include/linux/err.h b/include/linux/err.h index 7b5daa6..cdec8b6 100644 --- a/include/linux/err.h +++ b/include/linux/err.h @@ -26,6 +26,13 @@ static inline void *__ERR_PTR(long error) #define ERR_PTR(error) (BUILD_BUG_ON(__builtin_constant_p(error) && !IS_ERR_VALUE(error)), __ERR_PTR(error)) +static inline void *__ERR_OR_0_PTR(long error) +{ + return (void *) error; +} + +#define ERR_OR_0_PTR(error) (BUILD_BUG_ON(__builtin_constant_p(error) && error && !IS_ERR_VALUE(error)), __ERR_OR_0_PTR(error)) + static inline long PTR_ERR(const void *ptr) { return (long) ptr; -- 1.5.4.5
|  |