linux-kernel - [PATCH] PCI: pcie: remove redundant 'default n' from Kconfig

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Message-Id: <20181016143814eucas1p21b1f3099131fc3f4263947932195299e~eHZ_4THEH2088320883eucas1p2s@eucas1p2.samsung.com>
Date:   Tue, 16 Oct 2018 16:38:13 +0200
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] PCI: pcie: remove redundant 'default n' from Kconfig

'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@...sung.com>
---
 drivers/pci/pcie/Kconfig |    4 ----
 1 file changed, 4 deletions(-)

Index: b/drivers/pci/pcie/Kconfig
===================================================================
--- a/drivers/pci/pcie/Kconfig	2018-10-09 15:58:49.831123212 +0200
+++ b/drivers/pci/pcie/Kconfig	2018-10-16 16:36:32.419732670 +0200
@@ -36,7 +36,6 @@ config PCIEAER
 config PCIEAER_INJECT
 	tristate "PCI Express error injection support"
 	depends on PCIEAER && DYNAMIC_FTRACE_WITH_REGS
-	default n
 	help
 	  This enables PCI Express Root Port Advanced Error Reporting
 	  (AER) software error injector.
@@ -84,7 +83,6 @@ config PCIEASPM
 config PCIEASPM_DEBUG
 	bool "Debug PCI Express ASPM"
 	depends on PCIEASPM
-	default n
 	help
 	  This enables PCI Express ASPM debug support. It will add per-device
 	  interface to control ASPM.
@@ -129,7 +127,6 @@ config PCIE_PME
 config PCIE_DPC
 	bool "PCI Express Downstream Port Containment support"
 	depends on PCIEPORTBUS && PCIEAER
-	default n
 	help
 	  This enables PCI Express Downstream Port Containment (DPC)
 	  driver support.  DPC events from Root and Downstream ports
@@ -139,7 +136,6 @@ config PCIE_DPC
 
 config PCIE_PTM
 	bool "PCI Express Precision Time Measurement support"
-	default n
 	depends on PCIEPORTBUS
 	help
 	  This enables PCI Express Precision Time Measurement (PTM)