Fix STM32 F2/F4 SDIO clocking; Clean-up files in sched/ directory

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4940 7fd9a85b-ad96-42d3-883c-3090e2eb8679

nuttx/sched/pthread_mutexlock.c

@@ -2,7 +2,7 @@
  * sched/pthread_mutexlock.c
  *
  *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -72,35 +72,38 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  pthread_mutex_lock
+ * Name: pthread_mutex_lock
  *
  * Description:
- *   The mutex object referenced by mutex is locked by calling pthread_mutex_lock().
- *   If the mutex is already locked, the calling thread blocks until the mutex
- *   becomes available. This operation returns with the mutex object referenced
- *   by mutex in the locked state with the calling thread as its owner.
+ *   The mutex object referenced by mutex is locked by calling
+ *   pthread_mutex_lock(). If the mutex is already locked, the calling thread
+ *   blocks until the mutex becomes available. This operation returns with the
+ *   mutex object referenced by mutex in the locked state with the calling
+ *   thread as its owner.
  *
- *   If the mutex type is PTHREAD_MUTEX_NORMAL, deadlock detection is not provided.
- *   Attempting to relock the mutex causes deadlock. If a thread attempts to unlock
- *   a mutex that it has not locked or a mutex which is unlocked, undefined behavior
- *   results.
+ *   If the mutex type is PTHREAD_MUTEX_NORMAL, deadlock detection is not
+ *   provided. Attempting to relock the mutex causes deadlock. If a thread
+ *   attempts to unlock a mutex that it has not locked or a mutex which is
+ *   unlocked, undefined behavior results.
  *
- *   If the mutex type is PTHREAD_MUTEX_ERRORCHECK, then error checking is provided.
- *   If a thread attempts to relock a mutex that it has already locked, an error
- *   will be returned. If a thread attempts to unlock a mutex that it has not
- *   locked or a mutex which is unlocked, an error will be returned.
+ *   If the mutex type is PTHREAD_MUTEX_ERRORCHECK, then error checking is
+ *   provided. If a thread attempts to relock a mutex that it has already
+ *   locked, an error will be returned. If a thread attempts to unlock a
+ *   mutex that it has not locked or a mutex which is unlocked, an error will
+ *   be returned.
  *
- *   If the mutex type is PTHREAD_MUTEX_RECURSIVE, then the mutex maintains the concept
- *   of a lock count. When a thread successfully acquires a mutex for the first time,
- *   the lock count is set to one. Every time a thread relocks this mutex, the lock count
- *   is incremented by one. Each time the thread unlocks the mutex, the lock count is
- *   decremented by one. When the lock count reaches zero, the mutex becomes available
- *   for other threads to acquire. If a thread attempts to unlock a mutex that it has
- *   not locked or a mutex which is unlocked, an error will be returned.
+ *   If the mutex type is PTHREAD_MUTEX_RECURSIVE, then the mutex maintains
+ *   the concept of a lock count. When a thread successfully acquires a mutex
+ *   for the first time, the lock count is set to one. Every time a thread
+ *   relocks this mutex, the lock count is incremented by one. Each time the
+ *   thread unlocks the mutex, the lock count is decremented by one. When the
+ *   lock count reaches zero, the mutex becomes available for other threads to
+ *   acquire. If a thread attempts to unlock a mutex that it has not locked or
+ *   a mutex which is unlocked, an error will be returned.
  *
- *   If a signal is delivered to a thread waiting for a mutex, upon return from
- *   the signal handler the thread resumes waiting for the mutex as if it was
- *   not interrupted.
+ *   If a signal is delivered to a thread waiting for a mutex, upon return
+ *   from the signal handler the thread resumes waiting for the mutex as if
+ *   it was not interrupted.
  *
  * Parameters:
  *   mutex - A reference to the mutex to be locked.
@@ -141,16 +144,16 @@ int pthread_mutex_lock(FAR pthread_mutex_t *mutex)
 #ifdef CONFIG_MUTEX_TYPES
           if (mutex->type == PTHREAD_MUTEX_RECURSIVE)
             {
-	      /* Yes... just increment the number of locks held and return success */
-	      
-	      mutex->nlocks++;
+              /* Yes... just increment the number of locks held and return success */
+          
+              mutex->nlocks++;
             }
           else
 #endif
             {
-	      /* No, then we would deadlock... return an error (default behavior
-	       * is like PTHREAD_MUTEX_ERRORCHECK)
-	       */
+              /* No, then we would deadlock... return an error (default behavior
+               * is like PTHREAD_MUTEX_ERRORCHECK)
+               */
 
               sdbg("Returning EDEADLK\n");
               ret = EDEADLK;
@@ -174,6 +177,7 @@ int pthread_mutex_lock(FAR pthread_mutex_t *mutex)
 #endif
             }
         }
+
       sched_unlock();
     }