Messages in this thread Patch in this message | | | From | Thierry Reding <> | Subject | [PATCH 2/2] Ignore address space for IS_ERR() and friends | Date | Wed, 30 Jan 2013 20:32:57 +0100 |
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This patch ignores sparse' address_space and noderef attributes for pointers passed to the IS_ERR() and related functions. Since they only extract an error code or compare the pointer to an integer value, they can safely be used on any type of pointer.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> --- Note that in order for this to work a patched version of sparse is required.
include/linux/err.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/include/linux/err.h b/include/linux/err.h index f2edce2..92103bf 100644 --- a/include/linux/err.h +++ b/include/linux/err.h @@ -24,17 +24,17 @@ static inline void * __must_check ERR_PTR(long error) return (void *) error; } -static inline long __must_check PTR_ERR(const void *ptr) +static inline long __must_check PTR_ERR(const void __force *ptr) { return (long) ptr; } -static inline long __must_check IS_ERR(const void *ptr) +static inline long __must_check IS_ERR(const void __force *ptr) { return IS_ERR_VALUE((unsigned long)ptr); } -static inline long __must_check IS_ERR_OR_NULL(const void *ptr) +static inline long __must_check IS_ERR_OR_NULL(const void __force *ptr) { return !ptr || IS_ERR_VALUE((unsigned long)ptr); } @@ -46,13 +46,13 @@ static inline long __must_check IS_ERR_OR_NULL(const void *ptr) * Explicitly cast an error-valued pointer to another pointer type in such a * way as to make it clear that's what's going on. */ -static inline void * __must_check ERR_CAST(const void *ptr) +static inline void * __must_check ERR_CAST(const void __force *ptr) { /* cast away the const */ return (void *) ptr; } -static inline int __must_check PTR_RET(const void *ptr) +static inline int __must_check PTR_RET(const void __force *ptr) { if (IS_ERR(ptr)) return PTR_ERR(ptr); -- 1.8.1.2
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