Fixes for compiler warnings from Lorenz Meier

configs/sama5d3x-ek/README.txt

@@ -933,7 +933,8 @@ Configurations
         improves with accesses.  Clearly, more work needs to be done.
 
         Here is another strange observation:  SDRAM accesses tend to
-        generate occasional spurious interrupts!  No idea why.
+        generate occasional spurious interrupts in those same conditions
+        where the memory test fails!  No idea why.
 
   ostest:
     This configuration directory, performs a simple OS test using

include/nuttx/math.h

@@ -51,13 +51,13 @@
 #ifdef CONFIG_ARCH_MATH_H
 #  include <arch/math.h>
 
-/* If CONFIG_LIB is enabled, then the math library at lib/math will be
+/* If CONFIG_LIBM is enabled, then the math library at lib/math will be
  * built.  This library was taken from the math library developed for the
  * Rhombus OS by Nick Johnson (https://github.com/nickbjohnson4224/rhombus).
  * The port or the Rhombus math library was contributed by Darcy Gong.
  */
 
-#else if defined CONFIG_LIBM
+#elif defined CONFIG_LIBM
 
 /****************************************************************************
  * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com>

include/nuttx/usb/usbdev_trace.h

@@ -377,22 +377,21 @@
 #define USBMSC_TRACEERR_VERIFY10NOBLOCKS             0x0066
 #define USBMSC_TRACEERR_VERIFY10READFAIL             0x0067
 #define USBMSC_TRACEERR_WRALLOCREQ                   0x0068
-#define USBMSC_TRACEERR_SNDPHERROR                   0x0069
-#define USBMSC_TRACEERR_WRCOMPLETEINVALIDARGS        0x006a
-#define USBMSC_TRACEERR_WRITE10FLAGS                 0x006b
-#define USBMSC_TRACEERR_WRITE10LBARANGE              0x006c
-#define USBMSC_TRACEERR_WRITE10MEDIANOTPRESENT       0x006d
-#define USBMSC_TRACEERR_WRITE10READONLY              0x006e
-#define USBMSC_TRACEERR_WRITE12FLAGS                 0x006f
-#define USBMSC_TRACEERR_WRITE12LBARANGE              0x0070
-#define USBMSC_TRACEERR_WRITE12MEDIANOTPRESENT       0x0071
-#define USBMSC_TRACEERR_WRITE12READONLY              0x0072
-#define USBMSC_TRACEERR_WRITE6LBARANGE               0x0073
-#define USBMSC_TRACEERR_WRITE6MEDIANOTPRESENT        0x0074
-#define USBMSC_TRACEERR_WRITE6READONLY               0x0075
-#define USBMSC_TRACEERR_WRSHUTDOWN                   0x0076
-#define USBMSC_TRACEERR_WRUNEXPECTED                 0x0077
-#define USBMSC_TRACEERR_UNSUPPORTEDTYPE              0x0078
+#define USBMSC_TRACEERR_WRCOMPLETEINVALIDARGS        0x0069
+#define USBMSC_TRACEERR_WRITE10FLAGS                 0x006a
+#define USBMSC_TRACEERR_WRITE10LBARANGE              0x006b
+#define USBMSC_TRACEERR_WRITE10MEDIANOTPRESENT       0x006c
+#define USBMSC_TRACEERR_WRITE10READONLY              0x006d
+#define USBMSC_TRACEERR_WRITE12FLAGS                 0x006e
+#define USBMSC_TRACEERR_WRITE12LBARANGE              0x006f
+#define USBMSC_TRACEERR_WRITE12MEDIANOTPRESENT       0x0070
+#define USBMSC_TRACEERR_WRITE12READONLY              0x0071
+#define USBMSC_TRACEERR_WRITE6LBARANGE               0x0072
+#define USBMSC_TRACEERR_WRITE6MEDIANOTPRESENT        0x0073
+#define USBMSC_TRACEERR_WRITE6READONLY               0x0074
+#define USBMSC_TRACEERR_WRSHUTDOWN                   0x0075
+#define USBMSC_TRACEERR_WRUNEXPECTED                 0x0076
+#define USBMSC_TRACEERR_UNSUPPORTEDTYPE              0x0077
 
 /****************************************************************************
  * Public Types