compat: add IS_ERR_OR_NULL()

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

diff --git a/include/linux/compat-2.6.33.h b/include/linux/compat-2.6.33.h
index 43f19893f4571cf37dbc89d3e9c27b05dce773a7..386ee4c9c0ad02b7062bfefe4fdd05477030db62 100644 (file)
--- a/include/linux/compat-2.6.33.h
+++ b/include/linux/compat-2.6.33.h
@@ -144,6 +144,11 @@ static inline bool pci_is_pcie(struct pci_dev *dev)
 #define __always_unused                        /* unimplemented */
 #endif
 
+static inline long __must_check IS_ERR_OR_NULL(const void *ptr)
+{
+       return !ptr || IS_ERR_VALUE((unsigned long)ptr);
+}
+
 #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33)) */
 
 #endif /* LINUX_26_33_COMPAT_H */