diff options
Diffstat (limited to 'dev/uart8250.cc')
| -rw-r--r-- | dev/uart8250.cc | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/dev/uart8250.cc b/dev/uart8250.cc index 99e3bd017..013cbfd00 100644 --- a/dev/uart8250.cc +++ b/dev/uart8250.cc @@ -146,10 +146,11 @@ Uart8250::read(MemReqPtr &req, uint8_t *data) break; case 0x2: // Intr Identification Register (IIR) DPRINTF(Uart, "IIR Read, status = %#x\n", (uint32_t)status); - if (status) - *(uint8_t*)data = 0; + status &= ~TX_INT; + if (status & RX_INT) + *(uint8_t*)data = IIR_RXID; else - *(uint8_t*)data = 1; + *(uint8_t*)data = IIR_NOPEND; break; case 0x3: // Line Control Register (LCR) *(uint8_t*)data = LCR; |