keyboard: Avoid HID activity in USB suspend

JohnAZoidberg · JohnAZoidberg · commit ecab28b68960 · 2023-10-01T13:13:31.000+08:00
Signed-off-by: Daniel Schaefer &lt;dhs@frame.work&gt;
diff --git a/keyboard/src/main.rs b/keyboard/src/main.rs
@@ -475,21 +475,23 @@ fn main() -> ! {
             scan_timer = timer.get_counter().ticks();
         }
 
-        let _ = keyboard_hid.interface().read_report();
+        if !usb_suspended {
+            let _ = keyboard_hid.interface().read_report();
 
-        // Setup the report for the control channel
-        let keycodes = if let Some(keycode) = keycode {
-            [keycode]
-        } else {
-            [Keyboard::NoEventIndicated]
-        };
-        match keyboard_hid.interface().write_report(keycodes) {
-            Err(UsbHidError::WouldBlock) | Err(UsbHidError::Duplicate) | Ok(_) => {}
-            Err(e) => panic!("Failed to write keyboard report: {:?}", e),
-        }
-        match keyboard_hid.interface().tick() {
-            Err(UsbHidError::WouldBlock) | Ok(_) => {}
-            Err(e) => panic!("Failed to process keyboard tick: {:?}", e),
+            // Setup the report for the control channel
+            let keycodes = if let Some(keycode) = keycode {
+                [keycode]
+            } else {
+                [Keyboard::NoEventIndicated]
+            };
+            match keyboard_hid.interface().write_report(keycodes) {
+                Err(UsbHidError::WouldBlock) | Err(UsbHidError::Duplicate) | Ok(_) => {}
+                Err(e) => panic!("Failed to write keyboard report: {:?}", e),
+            }
+            match keyboard_hid.interface().tick() {
+                Err(UsbHidError::WouldBlock) | Ok(_) => {}
+                Err(e) => panic!("Failed to process keyboard tick: {:?}", e),
+            }
         }
 
         // Wake the host.
