refactor(nuttx_image_cache): remove LV_CACHE_DEF_SIZE dependency (#6178)

src/drivers/nuttx/lv_nuttx_entry.c

@@ -104,9 +104,7 @@ void lv_nuttx_init(const lv_nuttx_dsc_t * dsc, lv_nuttx_result_t * result)
 
     lv_nuttx_cache_init();
 
-#if LV_CACHE_DEF_SIZE > 0
     lv_nuttx_image_cache_init();
-#endif
 
 #if LV_USE_PROFILER && LV_USE_PROFILER_BUILTIN
     lv_nuttx_profiler_init();

src/drivers/nuttx/lv_nuttx_entry.h

@@ -44,13 +44,7 @@ typedef struct {
 } lv_nuttx_result_t;
 
 typedef struct _lv_nuttx_ctx_t {
-
-#if LV_CACHE_DEF_SIZE > 0
     void * image_cache;
-#else
-    void * dummy;
-#endif
-
 } lv_nuttx_ctx_t;
 
 /**********************

src/drivers/nuttx/lv_nuttx_image_cache.c

@@ -10,8 +10,6 @@
 #include "lv_nuttx_image_cache.h"
 #include "../../../lvgl.h"
 
-#if LV_CACHE_DEF_SIZE > 0
-
 #if LV_USE_NUTTX
 
 #include <nuttx/mm/mm.h>
@@ -78,6 +76,11 @@ static bool defer_init(void)
         return true;
     }
 
+    if(img_cache_p->max_size == 0) {
+        LV_LOG_INFO("Image cache is not initialized yet. Skipping deferred initialization. Because max_size is 0.");
+        return false;
+    }
+
     ctx->mem_size = img_cache_p->max_size;
     ctx->mem = malloc(ctx->mem_size);
     LV_ASSERT_MALLOC(ctx->mem);
@@ -150,4 +153,3 @@ static void free_cb(void * draw_buf)
 }
 
 #endif /* LV_USE_NUTTX */
-#endif /* LV_CACHE_DEF_SIZE > 0 */

src/drivers/nuttx/lv_nuttx_image_cache.h

@@ -16,8 +16,6 @@ extern "C" {
 
 #include "../../lv_conf_internal.h"
 
-#if LV_CACHE_DEF_SIZE > 0
-
 /*********************
  *      DEFINES
  *********************/
@@ -36,8 +34,6 @@ void lv_nuttx_image_cache_init(void);
  *      MACROS
  **********************/
 
-#endif /*LV_CACHE_DEF_SIZE > 0*/
-
 #ifdef __cplusplus
 } /*extern "C"*/
 #endif