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To:     Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Andrew Donnellan <ajd@linux.ibm.com>,
        Eric Piel <eric.piel@tremplin-utc.net>,
        Frank Haverkamp <haver@linux.ibm.com>,
        Frederic Barrat <fbarrat@linux.ibm.com>,
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        linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: [PATCH] misc: remove redundant 'default n' from Kconfig-s
Message-ID: <1ab818ae-4d9f-d17a-f11f-7caaa5bf98bc@samsung.com>
Date:   Mon, 20 May 2019 16:10:46 +0200
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References: <CGME20190520141047eucas1p2c6006d1ecfc3eb287b6b33d131f66180@eucas1p2.samsung.com>
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'default n' is the default value for any bool or tristate Kconfig
setting so there is no need to write it explicitly.

Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO
is not set' for visible symbols") the Kconfig behavior is the same
regardless of 'default n' being present or not:

    ...
    One side effect of (and the main motivation for) this change is making
    the following two definitions behave exactly the same:
    
        config FOO
                bool
    
        config FOO
                bool
                default n
    
    With this change, neither of these will generate a
    '# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied).
    That might make it clearer to people that a bare 'default n' is
    redundant.
    ...

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
 drivers/misc/Kconfig              |   10 ----------
 drivers/misc/altera-stapl/Kconfig |    1 -
 drivers/misc/c2port/Kconfig       |    2 --
 drivers/misc/cb710/Kconfig        |    1 -
 drivers/misc/cxl/Kconfig          |    3 ---
 drivers/misc/echo/Kconfig         |    1 -
 drivers/misc/genwqe/Kconfig       |    1 -
 drivers/misc/lis3lv02d/Kconfig    |    2 --
 drivers/misc/ocxl/Kconfig         |    1 -
 9 files changed, 22 deletions(-)

Index: b/drivers/misc/Kconfig
===================================================================
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -8,7 +8,6 @@ config SENSORS_LIS3LV02D
 	tristate
 	depends on INPUT
 	select INPUT_POLLDEV
-	default n
 
 config AD525X_DPOT
 	tristate "Analog Devices Digital Potentiometers"
@@ -61,7 +60,6 @@ config ATMEL_TCLIB
 
 config DUMMY_IRQ
 	tristate "Dummy IRQ handler"
-	default n
 	---help---
 	  This module accepts a single 'irq' parameter, which it should register for.
 	  The sole purpose of this module is to help with debugging of systems on
@@ -117,7 +115,6 @@ config PHANTOM
 config INTEL_MID_PTI
 	tristate "Parallel Trace Interface for MIPI P1149.7 cJTAG standard"
 	depends on PCI && TTY && (X86_INTEL_MID || COMPILE_TEST)
-	default n
 	help
 	  The PTI (Parallel Trace Interface) driver directs
 	  trace data routed from various parts in the system out
@@ -193,7 +190,6 @@ config ATMEL_SSC
 
 config ENCLOSURE_SERVICES
 	tristate "Enclosure Services"
-	default n
 	help
 	  Provides support for intelligent enclosures (bays which
 	  contain storage devices).  You also need either a host
@@ -217,7 +213,6 @@ config SGI_XP
 config CS5535_MFGPT
 	tristate "CS5535/CS5536 Geode Multi-Function General Purpose Timer (MFGPT) support"
 	depends on MFD_CS5535
-	default n
 	help
 	  This driver provides access to MFGPT functionality for other
 	  drivers that need timers.  MFGPTs are available in the CS5535 and
@@ -250,7 +245,6 @@ config CS5535_CLOCK_EVENT_SRC
 config HP_ILO
 	tristate "Channel interface driver for the HP iLO processor"
 	depends on PCI
-	default n
 	help
 	  The channel interface driver allows applications to communicate
 	  with iLO management processors present on HP ProLiant servers.
@@ -285,7 +279,6 @@ config QCOM_FASTRPC
 config SGI_GRU
 	tristate "SGI GRU driver"
 	depends on X86_UV && SMP
-	default n
 	select MMU_NOTIFIER
 	---help---
 	The GRU is a hardware resource located in the system chipset. The GRU
@@ -300,7 +293,6 @@ config SGI_GRU
 config SGI_GRU_DEBUG
 	bool  "SGI GRU driver debug"
 	depends on SGI_GRU
-	default n
 	---help---
 	This option enables additional debugging code for the SGI GRU driver.
 	If you are unsure, say N.
@@ -358,7 +350,6 @@ config SENSORS_BH1770
 config SENSORS_APDS990X
 	 tristate "APDS990X combined als and proximity sensors"
 	 depends on I2C
-	 default n
 	 ---help---
 	   Say Y here if you want to build a driver for Avago APDS990x
 	   combined ambient light and proximity sensor chip.
@@ -386,7 +377,6 @@ config DS1682
 config SPEAR13XX_PCIE_GADGET
 	bool "PCIe gadget support for SPEAr13XX platform"
 	depends on ARCH_SPEAR13XX && BROKEN
-	default n
 	help
 	 This option enables gadget support for PCIe controller. If
 	 board file defines any controller as PCIe endpoint then a sysfs
Index: b/drivers/misc/altera-stapl/Kconfig
===================================================================
--- a/drivers/misc/altera-stapl/Kconfig
+++ b/drivers/misc/altera-stapl/Kconfig
@@ -4,6 +4,5 @@ comment "Altera FPGA firmware download m
 config ALTERA_STAPL
 	tristate "Altera FPGA firmware download module"
 	depends on I2C
-	default n
 	help
 	  An Altera FPGA module. Say Y when you want to support this tool.
Index: b/drivers/misc/c2port/Kconfig
===================================================================
--- a/drivers/misc/c2port/Kconfig
+++ b/drivers/misc/c2port/Kconfig
@@ -4,7 +4,6 @@
 
 menuconfig C2PORT
 	tristate "Silicon Labs C2 port support"
-	default n
 	help
 	  This option enables support for Silicon Labs C2 port used to
 	  program Silicon micro controller chips (and other 8051 compatible).
@@ -23,7 +22,6 @@ if C2PORT
 config C2PORT_DURAMAR_2150
 	tristate "C2 port support for Eurotech's Duramar 2150"
 	depends on X86
-	default n
 	help
 	  This option enables C2 support for the Eurotech's Duramar 2150
 	  on board micro controller.
Index: b/drivers/misc/cb710/Kconfig
===================================================================
--- a/drivers/misc/cb710/Kconfig
+++ b/drivers/misc/cb710/Kconfig
@@ -14,7 +14,6 @@ config CB710_CORE
 config CB710_DEBUG
 	bool "Enable driver debugging"
 	depends on CB710_CORE != n
-	default n
 	help
 	  This is an option for use by developers; most people should
 	  say N here.  This adds a lot of debugging output to dmesg.
Index: b/drivers/misc/cxl/Kconfig
===================================================================
--- a/drivers/misc/cxl/Kconfig
+++ b/drivers/misc/cxl/Kconfig
@@ -4,16 +4,13 @@
 
 config CXL_BASE
 	bool
-	default n
 	select PPC_COPRO_BASE
 
 config CXL_AFU_DRIVER_OPS
 	bool
-	default n
 
 config CXL_LIB
 	bool
-	default n
 
 config CXL
 	tristate "Support for IBM Coherent Accelerators (CXL)"
Index: b/drivers/misc/echo/Kconfig
===================================================================
--- a/drivers/misc/echo/Kconfig
+++ b/drivers/misc/echo/Kconfig
@@ -1,6 +1,5 @@
 config ECHO
 	tristate "Line Echo Canceller support"
-	default n
 	---help---
 	  This driver provides line echo cancelling support for mISDN and
 	  Zaptel drivers.
Index: b/drivers/misc/genwqe/Kconfig
===================================================================
--- a/drivers/misc/genwqe/Kconfig
+++ b/drivers/misc/genwqe/Kconfig
@@ -6,7 +6,6 @@ menuconfig GENWQE
 	tristate "GenWQE PCIe Accelerator"
 	depends on PCI && 64BIT
 	select CRC_ITU_T
-	default n
 	help
 	  Enables PCIe card driver for IBM GenWQE accelerators.
 	  The user-space interface is described in
Index: b/drivers/misc/lis3lv02d/Kconfig
===================================================================
--- a/drivers/misc/lis3lv02d/Kconfig
+++ b/drivers/misc/lis3lv02d/Kconfig
@@ -6,7 +6,6 @@ config SENSORS_LIS3_SPI
 	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (SPI)"
 	depends on !ACPI && SPI_MASTER && INPUT
 	select SENSORS_LIS3LV02D
-	default n
 	help
 	  This driver provides support for the LIS3LV02Dx accelerometer connected
 	  via SPI. The accelerometer data is readable via
@@ -23,7 +22,6 @@ config SENSORS_LIS3_I2C
 	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (I2C)"
 	depends on I2C && INPUT
 	select SENSORS_LIS3LV02D
-	default n
 	help
 	  This driver provides support for the LIS3LV02Dx accelerometer connected
 	  via I2C. The accelerometer data is readable via
Index: b/drivers/misc/ocxl/Kconfig
===================================================================
--- a/drivers/misc/ocxl/Kconfig
+++ b/drivers/misc/ocxl/Kconfig
@@ -4,7 +4,6 @@
 
 config OCXL_BASE
 	bool
-	default n
 	select PPC_COPRO_BASE
 
 config OCXL