diff options
| author | Christian Marangi <ansuelsmth@gmail.com> | 2025-10-31 14:08:32 +0100 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2025-11-01 12:44:49 -0500 |
| commit | 652a86b24c5ac444afaf7625c9340d55aab7f105 (patch) | |
| tree | 25671c0855bdc8ba3ebae41325e0bd3daa92e68d | |
| parent | dc5db35073a19f6d3c30bea367b551c1a784ef8f (diff) | |
err.h: add INIT_ERR_PTR() macro
Add INIT_ERR_PTR() macro to initialize static variables with error
pointers. This might be useful for specific case where there is a static
variable initialized to an error condition and then later set to the
real handle once probe finish/completes.
This is to handle compilation problems like:
error: initializer element is not constant
where ERR_PTR() can't be used.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20251031130835.7953-2-ansuelsmth@gmail.com
[bjorn: Added () suffix on macro references]
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
| -rw-r--r-- | include/linux/err.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/err.h b/include/linux/err.h index 1d60aa86db53..8c37be0620ab 100644 --- a/include/linux/err.h +++ b/include/linux/err.h @@ -41,6 +41,14 @@ static inline void * __must_check ERR_PTR(long error) return (void *) error; } +/** + * INIT_ERR_PTR - Init a const error pointer. + * @error: A negative error code. + * + * Like ERR_PTR(), but usable to initialize static variables. + */ +#define INIT_ERR_PTR(error) ((void *)(error)) + /* Return the pointer in the percpu address space. */ #define ERR_PTR_PCPU(error) ((void __percpu *)(unsigned long)ERR_PTR(error)) |