Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[sfrench/cifs-2.6.git] / include / linux / err.h

diff --git a/include/linux/err.h b/include/linux/err.h
index 1ab1d44f8d3be7a28c8a1a849c72e1f841424015..ec87f3142bf30940c31911e71e6638d749de8f04 100644 (file)
--- a/include/linux/err.h
+++ b/include/linux/err.h
@@ -34,6 +34,19 @@ static inline long IS_ERR(const void *ptr)
        return IS_ERR_VALUE((unsigned long)ptr);
 }
 
+/**
+ * ERR_CAST - Explicitly cast an error-valued pointer to another pointer type
+ * @ptr: The pointer to cast.
+ *
+ * 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 *ERR_CAST(const void *ptr)
+{
+       /* cast away the const */
+       return (void *) ptr;
+}
+
 #endif
 
 #endif /* _LINUX_ERR_H */