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@xxxxxxxxxxxxxxxxx>
---
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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