[linux-yocto] [PATCH 09/12] include/linux/property.h: fix build issues with gcc-4.4.4

weifeng.voon at intel.com weifeng.voon at intel.com
Tue Mar 22 02:21:25 PDT 2016


From: Andrew Morton <akpm at linux-foundation.org>

gcc-4.4.4 has problems with initialization of anonymous unions:

drivers/mfd/intel-lpss-acpi.c:30: error: unknown field 'value' specified in initializer

work around this by crafting the initializers in a manner which the
compiler can handle.

Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
(cherry picked from commit d76eebfa175e86383324ad2bbaf472866950398b)
Signed-off-by: Voon, Weifeng <weifeng.voon at intel.com>
---
 include/linux/property.h | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/include/linux/property.h b/include/linux/property.h
index 329d58a..e0f27bd 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -169,12 +169,19 @@ struct property_entry {
 	};
 };
 
+/*
+ * Note: the below four initializers for the anonymous union are carefully
+ * crafted to avoid gcc-4.4.4's problems with initialization of anon unions
+ * and structs.
+ */
+
 #define PROPERTY_ENTRY_INTEGER_ARRAY(_name_, _type_, _val_)	\
 {								\
 	.name = _name_,						\
 	.length = ARRAY_SIZE(_val_) * sizeof(_type_),		\
 	.is_array = true,					\
-	.pointer._type_##_data = _val_,				\
+	.is_string = false,					\
+	{ .pointer = { _type_##_data = _val_ } },		\
 }
 
 #define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_)			\
@@ -192,14 +199,15 @@ struct property_entry {
 	.length = ARRAY_SIZE(_val_) * sizeof(const char *),	\
 	.is_array = true,					\
 	.is_string = true,					\
-	.pointer.str = _val_,					\
+	{ .pointer = { .str = _val_ } },			\
 }
 
 #define PROPERTY_ENTRY_INTEGER(_name_, _type_, _val_)	\
 {							\
 	.name = _name_,					\
 	.length = sizeof(_type_),			\
-	.value._type_##_data = _val_,			\
+	.is_string = false,				\
+	{ .value = { ._type_##_data = _val_ } },	\
 }
 
 #define PROPERTY_ENTRY_U8(_name_, _val_)		\
@@ -216,7 +224,7 @@ struct property_entry {
 	.name = _name_,					\
 	.length = sizeof(_val_),			\
 	.is_string = true,				\
-	.value.str = _val_,				\
+	{ .value = {.str = _val_} },			\
 }
 
 #define PROPERTY_ENTRY_BOOL(_name_)		\
-- 
1.9.1



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