diff options
Diffstat (limited to 'dev/uart8250.cc')
| -rw-r--r-- | dev/uart8250.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/dev/uart8250.cc b/dev/uart8250.cc index 013cbfd00..bbde14769 100644 --- a/dev/uart8250.cc +++ b/dev/uart8250.cc @@ -146,7 +146,10 @@ Uart8250::read(MemReqPtr &req, uint8_t *data) break; case 0x2: // Intr Identification Register (IIR) DPRINTF(Uart, "IIR Read, status = %#x\n", (uint32_t)status); + + //Tx interrupts are cleared on IIR reads status &= ~TX_INT; + if (status & RX_INT) *(uint8_t*)data = IIR_RXID; else |