4 files changed, 28 insertions, 20 deletions
diff --git a/src/class/bth/bth_device.c b/src/class/bth/bth_device.c
index a79908627..ea577db03 100755
--- a/src/class/bth/bth_device.c
+++ b/src/class/bth/bth_device.c
@@ -51,8 +51,14 @@ typedef struct
   uint32_t prev_xferred_bytes;
 
   // Endpoint Transfer buffer
-  CFG_TUSB_MEM_ALIGN bt_hci_cmd_t hci_cmd;
-  CFG_TUSB_MEM_ALIGN uint8_t epout_buf[CFG_TUD_BTH_DATA_EPSIZE];
+  union {
+    CFG_TUD_MEM_ALIGN bt_hci_cmd_t hci_cmd;
+    TUD_DCACHE_PADDING;
+  };
+  union {
+    CFG_TUD_MEM_ALIGN uint8_t epout_buf[CFG_TUD_BTH_DATA_EPSIZE];
+    TUD_DCACHE_PADDING;
+  };
 
 } btd_interface_t;
 
diff --git a/src/class/dfu/dfu_device.c b/src/class/dfu/dfu_device.c
index 71e7ac2b3..875bd4e09 100644
--- a/src/class/dfu/dfu_device.c
+++ b/src/class/dfu/dfu_device.c
@@ -47,8 +47,7 @@
 //--------------------------------------------------------------------+
 // INTERNAL OBJECT & FUNCTION DECLARATION
 //--------------------------------------------------------------------+
-typedef struct
-{
+typedef struct {
   uint8_t attrs;
   uint8_t alt;
 
@@ -59,14 +58,16 @@ typedef struct
   uint16_t block;
   uint16_t length;
 
-  CFG_TUSB_MEM_ALIGN uint8_t transfer_buf[CFG_TUD_DFU_XFER_BUFSIZE];
+  union {
+    CFG_TUD_MEM_ALIGN uint8_t transfer_buf[CFG_TUD_DFU_XFER_BUFSIZE];
+    TUD_DCACHE_PADDING;
+  };
 } dfu_state_ctx_t;
 
 // Only a single dfu state is allowed
 CFG_TUD_MEM_SECTION tu_static dfu_state_ctx_t _dfu_ctx;
 
-static void reset_state(void)
-{
+static void reset_state(void) {
   _dfu_ctx.state = DFU_IDLE;
   _dfu_ctx.status = DFU_STATUS_OK;
   _dfu_ctx.flashing_in_progress = false;
diff --git a/src/class/dfu/dfu_rt_device.c b/src/class/dfu/dfu_rt_device.c
index 3b801b787..a63c23d9a 100644
--- a/src/class/dfu/dfu_rt_device.c
+++ b/src/class/dfu/dfu_rt_device.c
@@ -58,9 +58,8 @@ bool dfu_rtd_deinit(void) {
   return true;
 }
 
-void dfu_rtd_reset(uint8_t rhport)
-{
-    (void) rhport;
+void dfu_rtd_reset(uint8_t rhport) {
+  (void) rhport;
 }
 
 uint16_t dfu_rtd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len)
diff --git a/src/class/midi/midi_device.c b/src/class/midi/midi_device.c
index 42905ab0d..7e30e5ea4 100644
--- a/src/class/midi/midi_device.c
+++ b/src/class/midi/midi_device.c
@@ -40,15 +40,13 @@
 // MACRO CONSTANT TYPEDEF
 //--------------------------------------------------------------------+
 
-typedef struct
-{
+typedef struct {
   uint8_t buffer[4];
   uint8_t index;
   uint8_t total;
-}midid_stream_t;
+} midid_stream_t;
 
-typedef struct
-{
+typedef struct {
   uint8_t itf_num;
   uint8_t ep_in;
   uint8_t ep_out;
@@ -72,9 +70,14 @@ typedef struct
   #endif
 
   // Endpoint Transfer buffer
-  CFG_TUSB_MEM_ALIGN uint8_t epout_buf[CFG_TUD_MIDI_EP_BUFSIZE];
-  CFG_TUSB_MEM_ALIGN uint8_t epin_buf[CFG_TUD_MIDI_EP_BUFSIZE];
-
+  union {
+    CFG_TUD_MEM_ALIGN uint8_t epout_buf[CFG_TUD_MIDI_EP_BUFSIZE];
+    TUD_DCACHE_PADDING;
+  };
+  union {
+    CFG_TUD_MEM_ALIGN uint8_t epin_buf[CFG_TUD_MIDI_EP_BUFSIZE];
+    TUD_DCACHE_PADDING;
+  };
 } midid_interface_t;
 
 #define ITF_MEM_RESET_SIZE   offsetof(midid_interface_t, rx_ff)
@@ -84,8 +87,7 @@ typedef struct
 //--------------------------------------------------------------------+
 CFG_TUD_MEM_SECTION midid_interface_t _midid_itf[CFG_TUD_MIDI];
 
-bool tud_midi_n_mounted (uint8_t itf)
-{
+bool tud_midi_n_mounted (uint8_t itf) {
   midid_interface_t* midi = &_midid_itf[itf];
   return midi->ep_in && midi->ep_out;
 }