[PATCH] module: Allow DEFAULT_SYMBOL_NAMESPACE be set after export.h included

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Commit ceb8bf2ceaa77 ("module: Convert default symbol namespace to string
literal") changed DEFAULT_SYMBOL_NAMESPACE to be a string literal.
However the conditional definition of _EXPORT_SYMBOL() was left in.

Instead just default DEFAULT_SYMBOL_NAMESPACE to "" and remove the
extra _EXPORT_SYMBOL() wrapper.

This lets DEFAULT_SYMBOL_NAMESPACE be defined after export.h is included.

Fixes fd57a3325a779 ("i2c: designware: Move exports to I2C_DW namespaces")

Signed-off-by: David Laight <david.laight.linux@xxxxxxxxx>
---
 drivers/i2c/busses/i2c-designware-common.c |  1 +
 drivers/i2c/busses/i2c-designware-master.c |  1 +
 drivers/i2c/busses/i2c-designware-slave.c  |  1 +
 include/linux/export.h                     | 10 ++++------
 4 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-common.c b/drivers/i2c/busses/i2c-designware-common.c
index 183a35038eef..be5850330c75 100644
--- a/drivers/i2c/busses/i2c-designware-common.c
+++ b/drivers/i2c/busses/i2c-designware-common.c
@@ -29,6 +29,7 @@
 #include <linux/types.h>
 #include <linux/units.h>
 
+#undef DEFAULT_SYMBOL_NAMESPACE
 #define DEFAULT_SYMBOL_NAMESPACE	"I2C_DW_COMMON"
 
 #include "i2c-designware-core.h"
diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index c8cbe5b1aeb1..083c5961d189 100644
--- a/drivers/i2c/busses/i2c-designware-master.c
+++ b/drivers/i2c/busses/i2c-designware-master.c
@@ -22,6 +22,7 @@
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
+#undef DEFAULT_SYMBOL_NAMESPACE
 #define DEFAULT_SYMBOL_NAMESPACE	"I2C_DW"
 
 #include "i2c-designware-core.h"
diff --git a/drivers/i2c/busses/i2c-designware-slave.c b/drivers/i2c/busses/i2c-designware-slave.c
index dc2b788eac5b..72b973afb0ec 100644
--- a/drivers/i2c/busses/i2c-designware-slave.c
+++ b/drivers/i2c/busses/i2c-designware-slave.c
@@ -16,6 +16,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
+#undef DEFAULT_SYMBOL_NAMESPACE
 #define DEFAULT_SYMBOL_NAMESPACE	"I2C_DW"
 
 #include "i2c-designware-core.h"
diff --git a/include/linux/export.h b/include/linux/export.h
index 2633df4d31e6..6cea1c3982cd 100644
--- a/include/linux/export.h
+++ b/include/linux/export.h
@@ -59,14 +59,12 @@
 
 #endif
 
-#ifdef DEFAULT_SYMBOL_NAMESPACE
-#define _EXPORT_SYMBOL(sym, license)	__EXPORT_SYMBOL(sym, license, DEFAULT_SYMBOL_NAMESPACE)
-#else
-#define _EXPORT_SYMBOL(sym, license)	__EXPORT_SYMBOL(sym, license, "")
+#ifndef DEFAULT_SYMBOL_NAMESPACE
+#define DEFAULT_SYMBOL_NAMESPACE ""
 #endif
 
-#define EXPORT_SYMBOL(sym)		_EXPORT_SYMBOL(sym, "")
-#define EXPORT_SYMBOL_GPL(sym)		_EXPORT_SYMBOL(sym, "GPL")
+#define EXPORT_SYMBOL(sym)		__EXPORT_SYMBOL(sym, "", DEFAULT_SYMBOL_NAMESPACE)
+#define EXPORT_SYMBOL_GPL(sym)		__EXPORT_SYMBOL(sym, "GPL", DEFAULT_SYMBOL_NAMESPACE)
 #define EXPORT_SYMBOL_NS(sym, ns)	__EXPORT_SYMBOL(sym, "", ns)
 #define EXPORT_SYMBOL_NS_GPL(sym, ns)	__EXPORT_SYMBOL(sym, "GPL", ns)
 
-- 
2.17.1





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