Fix various typos in documentation and comments.

ChangeLog

@@ -6516,7 +6516,7 @@
 	* Rename up_buttons() to board_buttons() for the same reason (2014-
 	  1-14).
 	* Rename up_irqbutton() to board_button_irq() (2014-1-24).
-	* Rename up_ledinit() to board_led_intialize() (2014-1-24).
+	* Rename up_ledinit() to board_led_initialize() (2014-1-24).
 	* Rename up_ledon() to board_led_on() and up_ledoff() to board_led_off()
 	  (2014-1-24).
 	* arch/x86/src/qemu-i486/gemu_head.S:  Patch from Matt Campbell
@@ -7990,7 +7990,7 @@
 	  the Nxplayer can recover gracefully:  Send and Audio Complete message
 	  (2014-8-5).
 	* arch/*/src/*/*_timerisr.c, up_initialize.c, and up_internal.h: Re-name
-	  up_timerinit() to up_timer_intialaize() for compatibility with new
+	  up_timerinit() to up_timer_initialize() for compatibility with new
 	  tickless OS interface name (2014-8-6).
 	* arch/*/src/*/Make.def:  Don't build existing timer initialization
 	  logic if CONFIG_SCHED_TICKLESS is defined (2014-8-6).
@@ -11377,29 +11377,29 @@
 	  (2016-01-26).
 	* SPI: Rename the SAM up_spiinitialize() to sam_spibus_initialize()
 	  (2016-01-26).
-	* SPI: Rename the Tiva up_spiinitialize() to tiva_spibus_intialize()
+	* SPI: Rename the Tiva up_spiinitialize() to tiva_spibus_initialize()
 	  (2016-01-26).
-	* SPI: Rename the PIC32MX/MZ up_spiinitialize() to pic32mx/mz_spibus_intialize()
+	* SPI: Rename the PIC32MX/MZ up_spiinitialize() to pic32mx/mz_spibus_initialize()
 	  (2016-01-26).
 	* SPI: Rename EFM32's efm32_spi_initialize to efm32_spibus_initialize()
 	  for compatibility with these other changes (2016-01-26).
-	* SPI: Rename the KL up_spiinitialize() to kl_spibus_intialize() (2016-01-26).
+	* SPI: Rename the KL up_spiinitialize() to kl_spibus_initialize() (2016-01-26).
-	* SPI: Rename the Kinetis up_spiinitialize() to kinetis_spibus_intialize()
+	* SPI: Rename the Kinetis up_spiinitialize() to kinetis_spibus_initialize()
 	  (2016-01-26).
-	* SPI: Rename the LPC31xx up_spiinitialize() to lpc31_spibus_intialize(),
+	* SPI: Rename the LPC31xx up_spiinitialize() to lpc31_spibus_initialize(),
-	  Rename the LPC17xx lpc17_spiinitialize() to lpc31_spibus_intialize(),
+	  Rename the LPC17xx lpc17_spiinitialize() to lpc31_spibus_initialize(),
-	  Rename the LPC43xx up_spiinitialize() to lpc43_spibus_intialize()
+	  Rename the LPC43xx up_spiinitialize() to lpc43_spibus_initialize()
 	  (2016-01-26).
-	* SPI: Rename the AVR up_spiinitialize() to avr_spibus_intialize(),
+	* SPI: Rename the AVR up_spiinitialize() to avr_spibus_initialize(),
-	  Rename the LPC2148 up_spiinitialize() to lpc214x_spibus_intialize(),
+	  Rename the LPC2148 up_spiinitialize() to lpc214x_spibus_initialize(),
-	  Rename the Calypso up_spiinitialize() to calypso_spibus_intialize(),
+	  Rename the Calypso up_spiinitialize() to calypso_spibus_initialize(),
-	  Rename the eZ80 up_spiinitialize() to ez80_spibus_intialize(),
+	  Rename the eZ80 up_spiinitialize() to ez80_spibus_initialize(),
-	  Rename the STR71xx up_spiinitialize() to str71_spibus_intialize(),
+	  Rename the STR71xx up_spiinitialize() to str71_spibus_initialize(),
-	  Rename the i.MX1 up_spiinitialize() to imx_spibus_intialize(),
+	  Rename the i.MX1 up_spiinitialize() to imx_spibus_initialize(),
-	  Rename the LPC2378 up_spiinitialize() to lpc23_spibus_intialize(),
+	  Rename the LPC2378 up_spiinitialize() to lpc23_spibus_initialize(),
-	  Rename the M9S12 up_spiinitialize() to hcs12_spibus_intialize(),
+	  Rename the M9S12 up_spiinitialize() to hcs12_spibus_initialize(),
-	  Rename the x86 up_spiinitialize() to i486_spibus_intialize(),
+	  Rename the x86 up_spiinitialize() to i486_spibus_initialize(),
-	  Rename the z16f up_spiinitialize() to z16_spibus_intialize().
+	  Rename the z16f up_spiinitialize() to z16_spibus_initialize().
 	  up_spiinitialize() has been completely eliminated. (2016-01-27).
 	* fs/vfs/fs_poll.c: Fix handling of sem_tickwait() return value
 	  sem_tickwait() does not return an -1+errno, it returns a negated
@@ -21635,7 +21635,7 @@
 	     MAC address which is not being changed here.
 
 	     From Gregory Nutt (2018-11-10).
-	* drivers/power/pm_initialize.c:  Fix pm_domain_s.stime unintialize caused
+	* drivers/power/pm_initialize.c:  Fix pm_domain_s.stime uninitialize caused
 	  time error.  Bug detail:
 
 	  1. open CONFIG_DEBUG_FEATURES CONFIG_SYSTEM_TIME64 CONFIG_CLOCK_MONOTONIC

Documentation/NuttX.html

@@ -5744,7 +5744,7 @@ Mem:         29232       5920      23312      23312
     <ul>
       <li>
         <p><b>NuttX-7.11</b>.
-          Serial driver and Ethernet driver support, along with DMA support, were available availabe in this initial release.
+          Serial driver and Ethernet driver support, along with DMA support, were available in this initial release.
           The STM32 F7 peripherals are very similar to some members of the STM32 F4 and additional drivers can easily be ported the F7 as discussed in this Wiki page: <a href="http://www.nuttx.org/doku.php?id=wiki:howtos:port-drivers_stm32f7">Porting Drivers to the STM32 F7</a>
         </p>
       </li>

ReleaseNotes

@@ -5678,7 +5678,7 @@ Additional new features and extended functionality:
       - Many functions renamed to better conform with the naming standard:
         up_buttoninit() renamed to board_button_initialize(), up_buttons()
         renamed to board_buttons(), up_irqbutton() renamed to
-        board_button_irq(), up_ledinit() renamed to board_led_intialize(),
+        board_button_irq(), up_ledinit() renamed to board_led_initialize(),
         up_ledon() renamed to board_led_on(), and up_ledoff() renamed to
         board_led_off(). All prototypes removed from board.h header files.
         Now ONLY prototypes in include/nuttx/arch.h.
@@ -13857,7 +13857,7 @@ Additional new features and extended functionality:
         STM32 was added by Anthony Merlino.  This board, along with the
         MRF24J40 Click board is the platform used to deveop the IEEE
         802.15.4 support.  The boad configuration includes the MRF24J40
-        intialization logic and SPI support.  Configurations exist for nsh,
+        initialization logic and SPI support.  Configurations exist for nsh,
         knsh, usbnsh, and mrf24j40-radio.
       - Nucleo_F334R8:  Add ADC example.  From Mateusz Szafoni.
       - Nucleo-F334R8:  Add COMP support.  From Mateusz Szafoni.
@@ -20185,7 +20185,7 @@ detailed bugfix information):
         Gregory Nutt.
       - PM:  Use the start time of state btime to calculate thrcnt; remove the
         loop whose count may be very big after the long idle  From ligd.
-      - PM Uninitialization:  Fix pm_domain_s.stime un-intialize caused time
+      - PM Uninitialization:  Fix pm_domain_s.stime un-initialize caused time
         error.  From ligd.
       - sched_kfree() and sched_ufree():  This patch prevent heap corruption
         in a corner case where memory is freed while switching contexts.  This

arch/Kconfig

@@ -837,7 +837,7 @@ config ARCH_HIPRI_INTERRUPT
 	---help---
 		NOTE: This description is currently unique to the Cortex-M family
 		which is the only family that currently supports this feature.  The
-		general feature is not conceptually unique to the Cortex-M but it
+		general feature is not conceptually unique to the Cortex-M but if it
 		is extended to any other family, then this discussion will have to
 		be generalized.
 

arch/arm/src/arm/up_vectors.S

@@ -82,7 +82,7 @@ g_aborttmp:
  * Name: up_vectorirq
  *
  * Description:
- *   Interrupt excetpion. Entered in IRQ mode with spsr = SVC CPSR, lr = SVC PC
+ *   Interrupt exception. Entered in IRQ mode with spsr = SVC CPSR, lr = SVC PC
  *
  ************************************************************************************/
 

arch/arm/src/c5471/c5471_vectors.S

@@ -83,7 +83,7 @@ g_aborttmp:
  * Name: up_vectorirq
  *
  * Description:
- *   Interrupt excetpion. Entered in IRQ mode with spsr = SVC
+ *   Interrupt exception. Entered in IRQ mode with spsr = SVC
  *   CPSR, lr = SVC PC
  ************************************************************************************/
 

drivers/sensors/qencoder.c

@@ -111,7 +111,7 @@ static const struct file_operations g_qeops =
  * Name: qe_open
  *
  * Description:
- *   This function is called whenever the PWM device is opened.
+ *   This function is called whenever the QEncoder device is opened.
  *
  ************************************************************************************/
 
@@ -132,7 +132,7 @@ static int qe_open(FAR struct file *filep)
       goto errout;
     }
 
-  /* Increment the count of references to the device.  If this the first
+  /* Increment the count of references to the device.  If this is the first
    * time that the driver has been opened for this device, then initialize
    * the device.
    */
@@ -180,7 +180,7 @@ errout:
  * Name: qe_close
  *
  * Description:
- *   This function is called when the PWM device is closed.
+ *   This function is called when the QEncoder device is closed.
  *
  ************************************************************************************/
 
@@ -216,7 +216,7 @@ static int qe_close(FAR struct file *filep)
 
       upper->crefs = 0;
 
-      /* Disable the PWM device */
+      /* Disable the QEncoder device */
 
       DEBUGASSERT(lower->ops->shutdown != NULL);
       sninfo("calling shutdown: %d\n");
@@ -235,7 +235,7 @@ errout:
  * Name: qe_read
  *
  * Description:
- *   A dummy read method.  This is provided only to satsify the VFS layer.
+ *   A dummy read method.  This is provided only to satisfy the VFS layer.
  *
  ************************************************************************************/
 
@@ -250,7 +250,7 @@ static ssize_t qe_read(FAR struct file *filep, FAR char *buffer, size_t buflen)
  * Name: qe_write
  *
  * Description:
- *   A dummy write method.  This is provided only to satsify the VFS layer.
+ *   A dummy write method.  This is provided only to satisfy the VFS layer.
  *
  ************************************************************************************/
 
@@ -265,7 +265,7 @@ static ssize_t qe_write(FAR struct file *filep, FAR const char *buffer, size_t b
  * Name: qe_ioctl
  *
  * Description:
- *   The standard ioctl method.  This is where ALL of the PWM work is done.
+ *   The standard ioctl method.  This is where ALL of the QEncoder work is done.
  *
  ************************************************************************************/
 
@@ -370,12 +370,12 @@ int qe_register(FAR const char *devpath, FAR struct qe_lowerhalf_s *lower)
       return -ENOMEM;
     }
 
-  /* Initialize the PWM device structure (it was already zeroed by kmm_zalloc()) */
+  /* Initialize the QEncoder device structure (it was already zeroed by kmm_zalloc()) */
 
   nxsem_init(&upper->exclsem, 0, 1);
   upper->lower = lower;
 
-  /* Register the PWM device */
+  /* Register the QEncoder device */
 
   sninfo("Registering %s\n", devpath);
   return register_driver(devpath, &g_qeops, 0666, upper);

include/nuttx/arch.h

@@ -226,7 +226,7 @@ void up_idle(void);
  *   has been created. This function is called to initialize
  *   the processor specific portions of the new TCB.
  *
- *   This function must setup the intial architecture registers
+ *   This function must setup the initial architecture registers
  *   and/or  stack so that execution will begin at tcb->start
  *   on the next context switch.
  *
@@ -1418,8 +1418,8 @@ int up_prioritize_irq(int irq, int priority);
  * following custom functions.
  *
  *   Architecture specific timer initialiation logic initializes the timer
- *     facilities.  This happens early in the intialization sequence (via
+ *     facilities.  This happens early in the initialization sequence (via
- *     up_intialize()).
+ *     up_initialize()).
  *   int up_timer_gettime(FAR struct timespec *ts):  Returns the current
  *     time from the platform specific time source.
  *