From 67c27783d7735af6ba22b9f031d97ca4ea56c29c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 10:24:23 +0200 Subject: Adding upstream version 1.1.0. Signed-off-by: Daniel Baumann --- include/linux/err.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 include/linux/err.h (limited to 'include/linux/err.h') diff --git a/include/linux/err.h b/include/linux/err.h new file mode 100644 index 0000000..1b1dafb --- /dev/null +++ b/include/linux/err.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ + +#ifndef __LINUX_ERR_H +#define __LINUX_ERR_H + +#include +#include + +#define MAX_ERRNO 4095 + +#define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO) + +static inline void * ERR_PTR(long error_) +{ + return (void *) error_; +} + +static inline long PTR_ERR(const void *ptr) +{ + return (long) ptr; +} + +static inline bool IS_ERR(const void *ptr) +{ + return IS_ERR_VALUE((unsigned long)ptr); +} + +static inline bool IS_ERR_OR_NULL(const void *ptr) +{ + return (!ptr) || IS_ERR_VALUE((unsigned long)ptr); +} + +static inline long PTR_ERR_OR_ZERO(const void *ptr) +{ + return IS_ERR(ptr) ? PTR_ERR(ptr) : 0; +} + +#endif -- cgit v1.2.3