diff options
| -rw-r--r-- | usr/src/cmd/bhyve/uart_emul.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/usr/src/cmd/bhyve/uart_emul.c b/usr/src/cmd/bhyve/uart_emul.c index 5a47e2e9ef..40eefa069a 100644 --- a/usr/src/cmd/bhyve/uart_emul.c +++ b/usr/src/cmd/bhyve/uart_emul.c @@ -515,6 +515,16 @@ uart_write(struct uart_softc *sc, int offset, uint8_t value) sc->thre_int_pending = true; break; case REG_IER: +#ifndef __FreeBSD__ + /* + * Assert an interrupt if re-enabling the THRE intr, since we + * always report THRE as active in the status register. + */ + if ((sc->ier & IER_ETXRDY) == 0 && + (value & IER_ETXRDY) != 0) { + sc->thre_int_pending = true; + } +#endif /* * Apply mask so that bits 4-7 are 0 * Also enables bits 0-3 only if they're 1 |