[PATCH v3 3/4] rust/hw/char/pl011/src/device: Add missing logging to match C version

[Bernhard Beschow <shentey@gmail.com>]

Co-developed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
 rust/hw/char/pl011/src/device.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/rust/hw/char/pl011/src/device.rs b/rust/hw/char/pl011/src/device.rs
index fa591c3ef6..48b4bca6b8 100644
--- a/rust/hw/char/pl011/src/device.rs
+++ b/rust/hw/char/pl011/src/device.rs
@@ -304,6 +304,12 @@ fn read_data_register(&mut self, update: &mut bool) -> u32 {
     }
 
     fn write_data_register(&mut self, value: u32) -> bool {
+        if !self.control.enable_uart() {
+            log_mask_ln!(Log::GuestError, "PL011 data written to disabled UART");
+        }
+        if !self.control.enable_transmit() {
+            log_mask_ln!(Log::GuestError, "PL011 data written to disabled TX UART");
+        }
         // interrupts always checked
         let _ = self.loopback_tx(value.into());
         self.int_level |= Interrupt::TX;
-- 
2.49.0