module: Convert default symbol namespace to string literal

Commit cdd30ebb1b9f ("module: Convert symbol namespace to string
literal") only converted MODULE_IMPORT_NS() and EXPORT_SYMBOL_NS(),
leaving DEFAULT_SYMBOL_NAMESPACE as a macro expansion.

This commit converts DEFAULT_SYMBOL_NAMESPACE in the same way to avoid
annoyance for the default namespace as well.

Signed-off-by: Masahiro Yamada <[e-mail]>
Reviewed-by: Uwe Kleine-König <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

Documentation/core-api/symbol-namespaces.rst

···
 export all symbols defined in usb-common into the namespace USB_COMMON, add a
 line like this to drivers/usb/common/Makefile::
 
-	ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_COMMON
+	ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE='"USB_COMMON"'
 
 That will affect all EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL() statements. A
 symbol exported with EXPORT_SYMBOL_NS() while this definition is present, will
···
 unit as preprocessor statement. The above example would then read::
 
 	#undef  DEFAULT_SYMBOL_NAMESPACE
-	#define DEFAULT_SYMBOL_NAMESPACE USB_COMMON
+	#define DEFAULT_SYMBOL_NAMESPACE "USB_COMMON"
 
 within the corresponding compilation unit before any EXPORT_SYMBOL macro is
 used.

Documentation/translations/it_IT/core-api/symbol-namespaces.rst

···
 dei nomi USB_COMMON, si può aggiungere la seguente linea in
 drivers/usb/common/Makefile::
 
-	ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_COMMON
+	ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE='"USB_COMMON"'
 
 Questo cambierà tutte le macro EXPORT_SYMBOL() ed EXPORT_SYMBOL_GPL(). Invece,
 un simbolo esportato con EXPORT_SYMBOL_NS() non verrà cambiato e il simbolo
···
 direttamente nei file da compilare. L'esempio precedente diventerebbe::
 
 	#undef  DEFAULT_SYMBOL_NAMESPACE
-	#define DEFAULT_SYMBOL_NAMESPACE USB_COMMON
+	#define DEFAULT_SYMBOL_NAMESPACE "USB_COMMON"
 
 Questo va messo prima di un qualsiasi uso di EXPORT_SYMBOL.
 

Documentation/translations/zh_CN/core-api/symbol-namespaces.rst

···
 子系统的 ``Makefile`` 中定义默认命名空间。例如，如果要将usb-common中定义的所有符号导
 出到USB_COMMON命名空间，可以在drivers/usb/common/Makefile中添加这样一行::
 
-       ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_COMMON
+       ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE='"USB_COMMON"'
 
 这将影响所有 EXPORT_SYMBOL() 和 EXPORT_SYMBOL_GPL() 语句。当这个定义存在时，
 用EXPORT_SYMBOL_NS()导出的符号仍然会被导出到作为命名空间参数传递的命名空间中，
···
 成::
 
        #undef  DEFAULT_SYMBOL_NAMESPACE
-       #define DEFAULT_SYMBOL_NAMESPACE USB_COMMON
+       #define DEFAULT_SYMBOL_NAMESPACE "USB_COMMON"
 
 应置于相关编译单元中任何 EXPORT_SYMBOL 宏之前
 

drivers/cdx/Makefile

···
 # Copyright (C) 2022-2023, Advanced Micro Devices, Inc.
 #
 
-ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=CDX_BUS
+ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE='"CDX_BUS"'
 
 obj-$(CONFIG_CDX_BUS) += cdx.o controller/
 

drivers/crypto/intel/iaa/Makefile

···
 # Makefile for IAA crypto device drivers
 #
 
-ccflags-y += -I $(srctree)/drivers/dma/idxd -DDEFAULT_SYMBOL_NAMESPACE=IDXD
+ccflags-y += -I $(srctree)/drivers/dma/idxd -DDEFAULT_SYMBOL_NAMESPACE='"IDXD"'
 
 obj-$(CONFIG_CRYPTO_DEV_IAA_CRYPTO) := iaa_crypto.o
 

drivers/crypto/intel/qat/qat_common/Makefile

···
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_CRYPTO_DEV_QAT) += intel_qat.o
-ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=CRYPTO_QAT
+ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE='"CRYPTO_QAT"'
 intel_qat-objs := adf_cfg.o \
 	adf_isr.o \
 	adf_ctl_drv.o \

drivers/dma/idxd/Makefile

···
-ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=IDXD
+ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE='"IDXD"'
 
 obj-$(CONFIG_INTEL_IDXD_BUS) += idxd_bus.o
 idxd_bus-y := bus.o

drivers/gpio/gpio-idio-16.c

···
 
 #include "gpio-idio-16.h"
 
-#define DEFAULT_SYMBOL_NAMESPACE GPIO_IDIO_16
+#define DEFAULT_SYMBOL_NAMESPACE "GPIO_IDIO_16"
 
 #define IDIO_16_DAT_BASE 0x0
 #define IDIO_16_OUT_BASE IDIO_16_DAT_BASE

drivers/hwmon/nct6775-core.c

···
 #include "nct6775.h"
 
 #undef DEFAULT_SYMBOL_NAMESPACE
-#define DEFAULT_SYMBOL_NAMESPACE HWMON_NCT6775
+#define DEFAULT_SYMBOL_NAMESPACE "HWMON_NCT6775"
 
 #define USE_ALTERNATE
 

drivers/i2c/busses/i2c-designware-common.c

···
 #include <linux/types.h>
 #include <linux/units.h>
 
-#define DEFAULT_SYMBOL_NAMESPACE	I2C_DW_COMMON
+#define DEFAULT_SYMBOL_NAMESPACE	"I2C_DW_COMMON"
 
 #include "i2c-designware-core.h"
 

drivers/i2c/busses/i2c-designware-master.c

···
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
-#define DEFAULT_SYMBOL_NAMESPACE	I2C_DW
+#define DEFAULT_SYMBOL_NAMESPACE	"I2C_DW"
 
 #include "i2c-designware-core.h"
 

drivers/i2c/busses/i2c-designware-slave.c

···
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
-#define DEFAULT_SYMBOL_NAMESPACE	I2C_DW
+#define DEFAULT_SYMBOL_NAMESPACE	"I2C_DW"
 
 #include "i2c-designware-core.h"
 

drivers/pwm/core.c

···
  * Copyright (C) 2011-2012 Avionic Design GmbH
  */
 
-#define DEFAULT_SYMBOL_NAMESPACE PWM
+#define DEFAULT_SYMBOL_NAMESPACE "PWM"
 
 #include <linux/acpi.h>
 #include <linux/module.h>

drivers/pwm/pwm-dwc-core.c

···
  * Author: Raymond Tan <[e-mail]>
  */
 
-#define DEFAULT_SYMBOL_NAMESPACE dwc_pwm
+#define DEFAULT_SYMBOL_NAMESPACE "dwc_pwm"
 
 #include <linux/bitops.h>
 #include <linux/export.h>

drivers/pwm/pwm-lpss.c

···
 #include <linux/pm_runtime.h>
 #include <linux/time.h>
 
-#define DEFAULT_SYMBOL_NAMESPACE PWM_LPSS
+#define DEFAULT_SYMBOL_NAMESPACE "PWM_LPSS"
 
 #include "pwm-lpss.h"
 

drivers/tty/serial/sc16is7xx.c

···
  */
 
 #undef DEFAULT_SYMBOL_NAMESPACE
-#define DEFAULT_SYMBOL_NAMESPACE SERIAL_NXP_SC16IS7XX
+#define DEFAULT_SYMBOL_NAMESPACE "SERIAL_NXP_SC16IS7XX"
 
 #include <linux/bits.h>
 #include <linux/clk.h>

drivers/usb/storage/Makefile

···
 
 ccflags-y := -I $(srctree)/drivers/scsi
 
-ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=USB_STORAGE
+ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE='"USB_STORAGE"'
 
 obj-$(CONFIG_USB_UAS)		+= uas.o
 obj-$(CONFIG_USB_STORAGE)	+= usb-storage.o

include/linux/export.h

···
 #endif
 
 #ifdef DEFAULT_SYMBOL_NAMESPACE
-#define _EXPORT_SYMBOL(sym, license)	__EXPORT_SYMBOL(sym, license, __stringify(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, "")
 #endif