change the lint warning fix way

Cargo.toml

@@ -21,9 +21,6 @@ rustc-hex = { version = "2.1.0", default-features = false }
 opt-level = 'z'
 lto = true
 
-[lints.rust]
-unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
-
 [features]
 default = ["pending_review_screen"]
 pending_review_screen = []
@@ -45,3 +42,6 @@ icon = "icons/cfx_32.gif"
 
 [package.metadata.ledger.flex]
 icon = "icons/cfx_40.gif"
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(target_os, values("stax", "flex", "nanos", "nanox", "nanosplus"))'] }

src/main.rs

@@ -17,8 +17,6 @@
 
 #![no_std]
 #![no_main]
-#![allow(static_mut_refs)]
-#![allow(unexpected_cfgs)]
 
 mod utils;
 mod app_ui {

src/settings.rs

@@ -21,21 +21,24 @@ impl Settings {
     #[inline(never)]
     #[allow(unused)]
     pub fn get_mut(&mut self) -> &mut AtomicStorage<[u8; SETTINGS_SIZE]> {
-        unsafe { DATA.get_mut() }
+        let data = &raw mut DATA;
+        unsafe { (*data).get_mut() }
     }
 
     #[inline(never)]
     #[allow(unused)]
     pub fn get_ref(&mut self) -> &AtomicStorage<[u8; SETTINGS_SIZE]> {
-        unsafe { DATA.get_ref() }
+        let data = &raw const DATA;
+        unsafe { (*data).get_ref() }
     }
 
     #[allow(unused)]
     pub fn get_element(&self, index: usize) -> Result<u8, AppSW> {
         if index >= SETTINGS_SIZE {
             return Err(AppSW::InternalError);
         }
-        let storage = unsafe { DATA.get_ref() };
+        let data = &raw const DATA;
+        let storage = unsafe { (*data).get_ref() };
         let settings = storage.get_ref();
         Ok(settings[index])
     }
@@ -46,7 +49,8 @@ impl Settings {
         if index >= SETTINGS_SIZE {
             return Err(AppSW::InternalError);
         }
-        let storage = unsafe { DATA.get_mut() };
+        let data = &raw mut DATA;
+        let storage = unsafe { (*data).get_mut() };
         let mut updated_data = *storage.get_ref();
         updated_data[index] = value;
         storage.update(&updated_data);