X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Flinux%2Ferr.h;h=ec87f3142bf30940c31911e71e6638d749de8f04;hb=8731f14d37825b54ad0c4c309cba2bc8fdf13a86;hp=1ab1d44f8d3be7a28c8a1a849c72e1f841424015;hpb=ac7f6b5e44cb0982b98c31fa33298ba73fb5dcfc;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/err.h b/include/linux/err.h
index 1ab1d44f8d3..ec87f3142bf 100644
--- 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 */