atsam: Add data memory barrier to USB driver

Signed-off-by: Luke Vuksta <wulfstawulfsta@gmail.com>
2024-10-10 15:13:02 -04:00 · 2024-10-10 15:13:02 -04:00 · 52af688245
commit 52af688245
parent 8a530cbcce
1 changed files with 1 additions and 0 deletions
--- a/src/atsam/sam3_usb.c
+++ b/src/atsam/sam3_usb.c
@ -32,6 +32,7 @@ usb_write_packet(uint32_t ep, const uint8_t *data, uint32_t len)
    uint8_t *dest = usb_fifo(ep);
    while (len--)
        *dest++ = *data++;
+    __DMB();
 }

 static void