graphics: For consistency, rename fields fb->fbmem as in other structures.

graphics/nxbe/nxbe_closewindow.c

@@ -121,18 +121,18 @@ void nxbe_closewindow(FAR struct nxbe_window_s *wnd)
 #ifdef CONFIG_NX_RAMBACKED
   /* Free any allocated, per-window framebuffer */
 
-  if (wnd->fb != NULL)
+  if (wnd->fbmem != NULL)
     {
 #ifdef CONFIG_BUILD_KERNEL
       DEBUGASSERT(wnd->npages > 0);
 
       /* Return the pages to the poll */
 
-      mm_pgfree((uintptr_t)wnd->fb, wnd->npages);
+      mm_pgfree((uintptr_t)wnd->fbmem, wnd->npages);
 #else
       /* Return the memory to the user heap */
 
-      kumm_free(wnd->fb);
+      kumm_free(wnd->fbmem);
 #endif
     }
 #endif

graphics/nxglib/fb/nxglib_copyrectangle.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * graphics/nxglib/fb/nxsglib_copyrectangle.c
+ * graphics/nxglib/fb/nxglib_copyrectangle.c
  *
  *   Copyright (C) 2008-2011 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>

graphics/nxmu/nxmu_openwindow.c

@@ -117,8 +117,8 @@ void nxmu_openwindow(FAR struct nxbe_state_s *be, FAR struct nxbe_window_s *wnd)
 
       /* Allocate the pages */
 
-      wnd->fb = (FAR nxgl_mxpixel_t *)mm_pgalloc(wnd->npages);
-      if (wnd->fb == NULL)
+      wnd->fbmem = (FAR nxgl_mxpixel_t *)mm_pgalloc(wnd->npages);
+      if (wnd->fbmem == NULL)
         {
           /* Fall back to no RAM back up */
 
@@ -136,8 +136,8 @@ void nxmu_openwindow(FAR struct nxbe_state_s *be, FAR struct nxbe_window_s *wnd)
        *      levels.
        */
 
-      wnd->fb = (FAR nxgl_mxpixel_t *)kumm_malloc(fbsize);
-      if (wnd->fb == NULL)
+      wnd->fbmem = (FAR nxgl_mxpixel_t *)kumm_malloc(fbsize);
+      if (wnd->fbmem == NULL)
         {
           /* Fall back to no RAM back up */
 

include/nuttx/nx/nxbe.h

@@ -140,7 +140,7 @@ struct nxbe_window_s
   uint16_t npages;                    /* Number of pages in allocation */
 #endif
   nxgl_coord_t stride;                /* Width of framebuffer in bytes */
-  FAR nxgl_mxpixel_t *fb;             /* Allocated framebuffer in kernal
+  FAR nxgl_mxpixel_t *fbmem;          /* Allocated framebuffer in kernel
                                        * address spaced.  Must be contiguous.
                                        */
 #endif

libs/libnx/nxmu/nx_constructwindow.c

@@ -119,7 +119,7 @@ int nx_constructwindow(NXHANDLE handle, NXWINDOW hwnd, uint8_t flags,
   wnd->npages = 0;
 #endif
   wnd->stride = 0;
-  wnd->fb     = NULL;
+  wnd->fbmem  = NULL;
 #endif
 
   /* Request initialization the new window from the server */