fix a lot of warnings

lv_objx/lv_btnm.c

@@ -417,6 +417,7 @@ static bool lv_btnm_design(lv_obj_t * btnm, const lv_area_t * mask, lv_design_mo
 			else if(btn_i == ext->btn_id_pr && btn_i != ext->btn_id_tgl) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_PR);
             else if(btn_i != ext->btn_id_pr && btn_i == ext->btn_id_tgl) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_TGL_REL);
             else if(btn_i == ext->btn_id_pr && btn_i == ext->btn_id_tgl) btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_TGL_PR);
+            else btn_style = lv_btnm_get_style(btnm, LV_BTNM_STYLE_BTN_REL);    /*Not possible option, just to be sure*/
 
 			/*On the right buttons clear the border if only right borders are drawn*/
 			if(ext->map_p[txt_i + 1][0] == '\0' || ext->map_p[txt_i + 1][0] == '\n') {

lv_objx/lv_chart.c

@@ -332,7 +332,7 @@ lv_coord_t lv_chart_get_series_width(lv_obj_t * chart)
  * @param chart pointer to chart object
  * @return dark effect level (LV_OPA_TRANSP to turn off)
  */
-lv_opa_t lv_chart_get_series_darking(lv_obj_t * chart, lv_opa_t dark_eff)
+lv_opa_t lv_chart_get_series_darking(lv_obj_t * chart)
 {
     lv_chart_ext_t * ext = lv_obj_get_ext_attr(chart);
     return ext->series.dark;

lv_objx/lv_chart.h

@@ -195,7 +195,7 @@ lv_coord_t lv_chart_get_series_width(lv_obj_t * chart);
  * @param chart pointer to chart object
  * @return dark effect level (LV_OPA_TRANSP to turn off)
  */
-lv_opa_t lv_chart_get_series_darking(lv_obj_t * chart, lv_opa_t dark_eff);
+lv_opa_t lv_chart_get_series_darking(lv_obj_t * chart);
 
 /**
  * Get the style of an chart object

lv_objx/lv_img.c

@@ -205,9 +205,9 @@ void lv_img_set_upscale(lv_obj_t * img, bool upscale_en)
     /*Upscale works only if antialiassing is enabled*/
 #if LV_ANTIALIAS == 0
     upscale_en = false;
-#else
-    ext->upscale = (upscale_en == false ? 0 : 1);
 #endif
+    ext->upscale = (upscale_en == false ? 0 : 1);
+
     /*Refresh the image with the new size*/
     lv_img_set_file(img, ext->fn);
 }

lv_objx/lv_kb.c

@@ -274,7 +274,7 @@ lv_kb_mode_t lv_kb_get_mode(lv_obj_t * kb)
  * @param kb pointer to a Keyboard object
  * @return true: show cursor on the current text area, false: hide cursor
  */
-bool lv_kb_get_cursor_manage(lv_obj_t * kb, bool en)
+bool lv_kb_get_cursor_manage(lv_obj_t * kb)
 {
     lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
     return ext->cursor_mng == 0 ? false : true;
@@ -285,7 +285,7 @@ bool lv_kb_get_cursor_manage(lv_obj_t * kb, bool en)
  * @param kb pointer to Keyboard object
  * @return the ok callback
  */
-lv_action_t lv_kb_get_ok_action(lv_obj_t * kb, lv_action_t action)
+lv_action_t lv_kb_get_ok_action(lv_obj_t * kb)
 {
     lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
     return ext->ok_action;
@@ -296,7 +296,7 @@ lv_action_t lv_kb_get_ok_action(lv_obj_t * kb, lv_action_t action)
  * @param kb pointer to Keyboard object
  * @return the close callback
  */
-lv_action_t lv_kb_get_close_action(lv_obj_t * kb, lv_action_t action)
+lv_action_t lv_kb_get_close_action(lv_obj_t * kb)
 {
     lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
     return ext->close_action;

lv_objx/lv_kb.h

@@ -135,21 +135,21 @@ lv_kb_mode_t lv_kb_get_mode(lv_obj_t * kb);
  * @param kb pointer to a Keyboard object
  * @return true: show cursor on the current text area, false: hide cursor
  */
-bool lv_kb_get_cursor_manage(lv_obj_t * kb, bool en);
+bool lv_kb_get_cursor_manage(lv_obj_t * kb);
 
 /**
  * Get the callback to call when the "Ok" button is pressed
  * @param kb pointer to Keyboard object
  * @return the ok callback
  */
-lv_action_t lv_kb_get_ok_action(lv_obj_t * kb, lv_action_t action);
+lv_action_t lv_kb_get_ok_action(lv_obj_t * kb);
 
 /**
  * Get the callback to call when the "Hide" button is pressed
  * @param kb pointer to Keyboard object
  * @return the close callback
  */
-lv_action_t lv_kb_get_close_action(lv_obj_t * kb, lv_action_t action);
+lv_action_t lv_kb_get_close_action(lv_obj_t * kb);
 
 /**
  * Get a style of a keyboard

lv_objx/lv_roller.c

@@ -244,7 +244,7 @@ static bool lv_roller_design(lv_obj_t * roller, const lv_area_t * mask, lv_desig
  */
 static lv_res_t lv_roller_signal(lv_obj_t * roller, lv_signal_t sign, void * param)
 {
-    lv_res_t res;
+    lv_res_t res  = LV_RES_OK;
 
     /*Don't let the drop down list to handle the control signals. It works differently*/
     if(sign != LV_SIGNAL_CONTROLL && sign != LV_SIGNAL_FOCUS && sign != LV_SIGNAL_DEFOCUS) {

lv_objx/lv_ta.c

@@ -1013,7 +1013,8 @@ static void cursor_blink_anim(lv_obj_t * ta, uint8_t show)
  */
 static void pwd_char_hider_anim(lv_obj_t * ta, int32_t x)
 {
-
+    (void)ta;
+    (void)x;
 }
 
 /**

lv_objx/lv_tabview.c

@@ -446,7 +446,7 @@ bool lv_tabview_get_sliding(lv_obj_t * tabview)
  * @param tabview pointer to Tab view object
  * @return time of animation in milliseconds
  */
-uint16_t lv_tabview_get_anim_time(lv_obj_t * tabview, uint16_t anim_time_ms)
+uint16_t lv_tabview_get_anim_time(lv_obj_t * tabview)
 {
     lv_tabview_ext_t  * ext = lv_obj_get_ext_attr(tabview);
     return ext->anim_time;
@@ -595,6 +595,8 @@ static lv_res_t tabpage_scrl_signal(lv_obj_t * tab_scrl, lv_signal_t sign, void
  */
 static void tabpage_pressed_hadler(lv_obj_t * tabview, lv_obj_t * tabpage)
 {
+    (void)tabpage;
+
     lv_tabview_ext_t * ext = lv_obj_get_ext_attr(tabview);
     lv_indev_t * indev = lv_indev_get_act();
     lv_indev_get_point(indev, &ext->point_last);

lv_objx/lv_tabview.h

@@ -182,7 +182,7 @@ bool lv_tabview_get_sliding(lv_obj_t * tabview);
  * @param tabview pointer to Tab view object
  * @return time of animation in milliseconds
  */
-uint16_t lv_tabview_get_anim_time(lv_obj_t * tabview, uint16_t anim_time_ms);
+uint16_t lv_tabview_get_anim_time(lv_obj_t * tabview);
 
 /**
  * Get a style of a tab view

lv_objx/lv_win.c

@@ -467,7 +467,7 @@ static void lv_win_realign(lv_obj_t * win)
 
     bool first_btn = true;
     lv_obj_t *btn;
-    lv_obj_t *btn_prev;
+    lv_obj_t *btn_prev = NULL;
     /*Refresh the size of all control buttons*/
     btn = lv_obj_get_child_back(ext->header, NULL);
     btn = lv_obj_get_child_back(ext->header, btn);    /*Skip the title*/