diff --git a/Documentation/NuttShell.html b/Documentation/NuttShell.html
index 856e8241494..48e207bc266 100644
--- a/Documentation/NuttShell.html
+++ b/Documentation/NuttShell.html
@@ -5010,7 +5010,7 @@ CONFIG_NSH_LOGIN_FAILCOUNT=3
 CONFIG_NSH_LOGIN_FIXED=y
 </pre></ul>
     <p>
-      The fixed login credentials are selected via: 
+      The fixed login credentials are selected via:
     </p>
 <ul><pre>
 CONFIG_NSH_LOGIN_USERNAME=admin
diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index 01abeba222b..69d81797cee 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -3297,7 +3297,7 @@ void lpwork_restorepriority(uint8_t reqprio);
     <p>
       If <code>CONFIG_ARCH_KERNEL_STACK=y</code> is selected then the platform specific code must export these additional interfaces:
     </p>
-    <ul>   
+    <ul>
       <li>
         <a href="#up_addrenv_kstackalloc">4.5.15 <code>up_addrenv_kstackalloc()</code></a>:
         Allocate the process kernel stack.
@@ -3699,7 +3699,7 @@ void lpwork_restorepriority(uint8_t reqprio);
 
 <h4><a name="boardsmp">4.7 Symmetric Multiprocessing (SMP) Application Interface</a></h4>
 <p>
-According to Wikipedia: "Symmetric multiprocessing (SMP) involves a symmetric multiprocessor system hardware and software architecture where two or more identical processors connect to a single, shared main memory, have full access to all I/O devices, and are controlled by a single operating system instance that treats all processors equally, reserving none for special purposes. Most multiprocessor systems today use an SMP architecture. In the case of multi-core processors, the SMP architecture applies to the cores, treating them as separate processors. 
+According to Wikipedia: "Symmetric multiprocessing (SMP) involves a symmetric multiprocessor system hardware and software architecture where two or more identical processors connect to a single, shared main memory, have full access to all I/O devices, and are controlled by a single operating system instance that treats all processors equally, reserving none for special purposes. Most multiprocessor systems today use an SMP architecture. In the case of multi-core processors, the SMP architecture applies to the cores, treating them as separate processors.
 </p>
 <p>
 "SMP systems are tightly coupled multiprocessor systems with a pool of homogeneous processors running independently, each processor executing different programs and working on different data and with capability of sharing common resources (memory, I/O device, interrupt system and so on) and connected using a system bus or a crossbar."
@@ -3735,7 +3735,7 @@ spinlock_t up_testset(volatile FAR spinlock_t *lock);
 <p><b>Returned Value</b>:</p>
 <ul>
   <p>
-    The spinlock is always locked upon return. 
+    The spinlock is always locked upon return.
     The value of previous value of the spinlock variable is returned, either <code>SP_LOCKED</code> if the spinlock was previously locked (meaning that the test-and-set operation failed to obtain the lock) or <code>SP_UNLOCKED</code> if the spinlock was previously unlocked (meaning that we successfully obtained the lock)
   </p>
 </ul>
diff --git a/configs/arduino-mega2560/hello/Make.defs b/configs/arduino-mega2560/hello/Make.defs
index 6371c1a5888..fec11c4f53a 100644
--- a/configs/arduino-mega2560/hello/Make.defs
+++ b/configs/arduino-mega2560/hello/Make.defs
@@ -48,7 +48,7 @@ ifeq ($(WINTOOL),y)
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
-  # Linux/Cygwin-native toolchain 
+  # Linux/Cygwin-native toolchain
   MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
diff --git a/configs/arduino-mega2560/nsh/Make.defs b/configs/arduino-mega2560/nsh/Make.defs
index b18a53d33cf..3d8ec0331fc 100644
--- a/configs/arduino-mega2560/nsh/Make.defs
+++ b/configs/arduino-mega2560/nsh/Make.defs
@@ -48,7 +48,7 @@ ifeq ($(WINTOOL),y)
   ARCHXXINCLUDES = $(ARCHINCLUDES) "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
-  # Linux/Cygwin-native toolchain 
+  # Linux/Cygwin-native toolchain
   MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem "$(TOPDIR)/include"
   ARCHXXINCLUDES =  $(ARCHINCLUDES) -isystem "$(TOPDIR)/include/cxx"
diff --git a/configs/arduino-mega2560/scripts/flash.ld b/configs/arduino-mega2560/scripts/flash.ld
index 811a771dd95..a678b45465b 100644
--- a/configs/arduino-mega2560/scripts/flash.ld
+++ b/configs/arduino-mega2560/scripts/flash.ld
@@ -140,7 +140,7 @@ SECTIONS
 	.data			:
 	{
 		_sdata = ABSOLUTE(.);
-		*(.rodata .rodata.*)                
+		*(.rodata .rodata.*)
 		*(.data .data.*)
 		*(.gnu.linkonce.d.*)
 		CONSTRUCTORS
diff --git a/configs/cc3200-launchpad/tools/cc3200.cfg b/configs/cc3200-launchpad/tools/cc3200.cfg
index 7657935a7f4..94ae8c3a09c 100644
--- a/configs/cc3200-launchpad/tools/cc3200.cfg
+++ b/configs/cc3200-launchpad/tools/cc3200.cfg
@@ -5,7 +5,7 @@
 #  Copyright (C) 2014 Droidifi LLC. All rights reserved.
 #  Author: Jim Ewing <jim@droidifi.com>
 #
-#  Redistributions must retain the above copyright notice and the 
+#  Redistributions must retain the above copyright notice and the
 #  following disclaimer.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
@@ -63,7 +63,7 @@ jtag configure $_CHIPNAME.jrc -event post-reset "runtest 100"
 
 set _TARGETNAME $_CHIPNAME.cpu
 
-target create $_CHIPNAME.cpu cortex_m -endian little -chain-position $_CHIPNAME.dap 
+target create $_CHIPNAME.cpu cortex_m -endian little -chain-position $_CHIPNAME.dap
 $_CHIPNAME.cpu configure -work-area-phys 0x20000000 -work-area-size 0x30000 -work-area-backup 0 -coreid 0
 
 source [find mem_helper.tcl]
diff --git a/configs/efm32-g8xx-stk/nsh/Make.defs b/configs/efm32-g8xx-stk/nsh/Make.defs
index c9feff08e21..88aa236c8db 100644
--- a/configs/efm32-g8xx-stk/nsh/Make.defs
+++ b/configs/efm32-g8xx-stk/nsh/Make.defs
@@ -48,7 +48,7 @@ ifeq ($(WINTOOL),y)
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
-  # Linux/Cygwin-native toolchain 
+  # Linux/Cygwin-native toolchain
   MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
diff --git a/configs/efm32gg-stk3700/nsh/Make.defs b/configs/efm32gg-stk3700/nsh/Make.defs
index c9feff08e21..88aa236c8db 100644
--- a/configs/efm32gg-stk3700/nsh/Make.defs
+++ b/configs/efm32gg-stk3700/nsh/Make.defs
@@ -48,7 +48,7 @@ ifeq ($(WINTOOL),y)
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
-  # Linux/Cygwin-native toolchain 
+  # Linux/Cygwin-native toolchain
   MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
diff --git a/configs/freedom-k66f/scripts/flash.ld b/configs/freedom-k66f/scripts/flash.ld
index ca8fcc34054..5eec2c7a9c9 100644
--- a/configs/freedom-k66f/scripts/flash.ld
+++ b/configs/freedom-k66f/scripts/flash.ld
@@ -3,7 +3,7 @@
  *
  *   Copyright (C) 2016-2017 Gregory Nutt. All rights reserved.
  *   Authors: Gregory Nutt <gnutt@nuttx.org>
- *            David Sidrane <david_s5@nscdg.com> 
+ *            David Sidrane <david_s5@nscdg.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -35,7 +35,7 @@
  ****************************************************************************/
 
 /* The MK66FN2M0VMD18 has 2M of FLASH beginning at address 0x0000:0000 and
- * 256Kb of SRAM beginning at address 0x1fff:0000 (SRAM_L)(64Kb) and 
+ * 256Kb of SRAM beginning at address 0x1fff:0000 (SRAM_L)(64Kb) and
  * 0x2000:0000 (SRAM_U) (192Kb).
  *
  * NOTE: that the first part of the K66 FLASH region is reserved for
diff --git a/configs/misoc/scripts/ld.script b/configs/misoc/scripts/ld.script
index 0a3aa7e3d02..f7514790676 100644
--- a/configs/misoc/scripts/ld.script
+++ b/configs/misoc/scripts/ld.script
@@ -70,7 +70,7 @@ SECTIONS
 		*(.gnu.linkonce.d.*)
 		CONSTRUCTORS
 		_edata = ABSOLUTE(.);
-	} > main_ram 
+	} > main_ram
 
 	.bss : {			/* BSS				*/
 		_sbss = ABSOLUTE(.);
diff --git a/configs/nr5m100-nexys4/scripts/ld.script b/configs/nr5m100-nexys4/scripts/ld.script
index df856beb23d..b2f1036ae2e 100644
--- a/configs/nr5m100-nexys4/scripts/ld.script
+++ b/configs/nr5m100-nexys4/scripts/ld.script
@@ -129,7 +129,7 @@ SECTIONS
   _vectors = .;
 
   /* vectors: Program code section */
-  .vectors : 
+  .vectors :
   {
     *(.text.vec)
     *(.text.vec.*)
@@ -147,7 +147,7 @@ SECTIONS
   PROVIDE( eprol = . );
 
   /* text: Program code section */
-  .text : 
+  .text :
   {
     _stext = ABSOLUTE(.);
     *(.text)
@@ -156,20 +156,20 @@ SECTIONS
   }
 
   /* init: Code to execute before main (called by crt0.S) */
-  .init : 
+  .init :
   {
     KEEP( *(.init) )
   }
 
   /* fini: Code to execute after main (called by crt0.S) */
-  .fini : 
+  .fini :
   {
     KEEP( *(.fini) )
   }
 
   /* rodata: Read-only data */
   _rodata = .;
-  .rodata : 
+  .rodata :
   {
     *(.rdata)
     *(.rodata)
@@ -218,7 +218,7 @@ SECTIONS
   .eh_frame_hdr     : { *(.eh_frame_hdr)     }
   .eh_frame         : { KEEP( *(.eh_frame) ) }
   .gcc_except_table : { *(.gcc_except_table) }
-  .jcr              : { KEEP (*(.jcr))       } 
+  .jcr              : { KEEP (*(.jcr))       }
 
   /*--------------------------------------------------------------------*/
   /* Initialized data segment                                           */
@@ -230,7 +230,7 @@ SECTIONS
 
   /* data: Writable data */
   _sdata = .;
-  .data : 
+  .data :
   {
     *(.data)
     *(.data.*)
@@ -246,7 +246,7 @@ SECTIONS
   _gp = . + 0x7FF0;
 
   /* Writable small data segment */
-  .sdata : 
+  .sdata :
   {
     *(.sdata)
     *(.sdata.*)
@@ -264,7 +264,7 @@ SECTIONS
   _fbss = .;
 
   /* Writable uninitialized small data segment */
-  .sbss : 
+  .sbss :
   {
     *(.sbss)
     *(.sbss.*)
@@ -274,7 +274,7 @@ SECTIONS
   /* bss: Uninitialized writeable data section */
   . = .;
   _bss_start = .;
-  .bss : 
+  .bss :
   {
     *(.bss)
     *(.bss.*)
diff --git a/configs/nr5m100-nexys4/scripts/openocd.cfg b/configs/nr5m100-nexys4/scripts/openocd.cfg
index ea4564d84e0..b3818fb9ea0 100644
--- a/configs/nr5m100-nexys4/scripts/openocd.cfg
+++ b/configs/nr5m100-nexys4/scripts/openocd.cfg
@@ -35,7 +35,7 @@
 
 #======================================
 #
-# Define the interface 
+# Define the interface
 #
 #=====================================
 
diff --git a/configs/olimex-efm32g880f128-stk/nsh/Make.defs b/configs/olimex-efm32g880f128-stk/nsh/Make.defs
index a6e5dfddc54..42e9c724fea 100644
--- a/configs/olimex-efm32g880f128-stk/nsh/Make.defs
+++ b/configs/olimex-efm32g880f128-stk/nsh/Make.defs
@@ -48,7 +48,7 @@ ifeq ($(WINTOOL),y)
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
 else
-  # Linux/Cygwin-native toolchain 
+  # Linux/Cygwin-native toolchain
   MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
diff --git a/configs/sam4s-xplained-pro/nsh/Make.defs b/configs/sam4s-xplained-pro/nsh/Make.defs
index 2dc8e2add39..5e49491448c 100644
--- a/configs/sam4s-xplained-pro/nsh/Make.defs
+++ b/configs/sam4s-xplained-pro/nsh/Make.defs
@@ -46,7 +46,7 @@ ifeq ($(WINTOOL),y)
   ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
   ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/ld.script}"
 else
-  # Linux/Cygwin-native toolchain 
+  # Linux/Cygwin-native toolchain
   MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
   ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
   ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
diff --git a/configs/sam4s-xplained-pro/scripts/ld.script b/configs/sam4s-xplained-pro/scripts/ld.script
index dee9c22187d..7c8b56ea2ec 100644
--- a/configs/sam4s-xplained-pro/scripts/ld.script
+++ b/configs/sam4s-xplained-pro/scripts/ld.script
@@ -33,12 +33,12 @@
  *
  ****************************************************************************/
 
-/* The ATSAM4SD32C has 2 banks of 1MB of FLASH beginning at address 
+/* The ATSAM4SD32C has 2 banks of 1MB of FLASH beginning at address
  * 0x0040:0000 and 160KB of SRAM beginning at address 0x2000:0000
  *
  * Flash 0 / 1 can be swapped with the GPNVM bit 2. We'll avoid using
  * the 2nd bank to allow this as an option for firmware upgrading or failsafe
- * 
+ *
  */
 
 MEMORY
diff --git a/configs/teensy-2.0/scripts/flash.ld b/configs/teensy-2.0/scripts/flash.ld
index c6d5cac3e8c..ab77b722b62 100644
--- a/configs/teensy-2.0/scripts/flash.ld
+++ b/configs/teensy-2.0/scripts/flash.ld
@@ -139,7 +139,7 @@ SECTIONS
 	.data			:
 	{
 		_sdata = ABSOLUTE(.);
-		*(.rodata .rodata.*)                
+		*(.rodata .rodata.*)
 		*(.data .data.*)
 		*(.gnu.linkonce.d.*)
 		CONSTRUCTORS
diff --git a/configs/z16f2800100zcog/pashello/defconfig b/configs/z16f2800100zcog/pashello/defconfig
index 5b5a904ad06..5e5a3785493 100644
--- a/configs/z16f2800100zcog/pashello/defconfig
+++ b/configs/z16f2800100zcog/pashello/defconfig
@@ -729,7 +729,7 @@ CONFIG_INTERPRETERS_PCODE=y
 # CONFIG_SYSTEM_HEX2BIN is not set
 # CONFIG_SYSTEM_HEXED is not set
 # CONFIG_SYSTEM_INSTALL is not set
-CONFIG_SYSTEM_PRUN=y 
+CONFIG_SYSTEM_PRUN=y
 # CONFIG_SYSTEM_RAMTEST is not set
 # CONFIG_READLINE_HAVE_EXTMATCH is not set
 # CONFIG_SYSTEM_READLINE is not set