diff options
Diffstat (limited to 'sys/dev/uart/uart_core.c')
| -rw-r--r-- | sys/dev/uart/uart_core.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/sys/dev/uart/uart_core.c b/sys/dev/uart/uart_core.c index 17dabd7..08ac576 100644 --- a/sys/dev/uart/uart_core.c +++ b/sys/dev/uart/uart_core.c @@ -412,6 +412,13 @@ uart_bus_attach(device_t dev) sc = sc0; /* + * Now that we know the softc for this device, connect the back + * pointer from the sysdev for this device, if any + */ + if (sc->sc_sysdev != NULL) + sc->sc_sysdev->sc = sc; + + /* * Protect ourselves against interrupts while we're not completely * finished attaching and initializing. We don't expect interrupts * until after UART_ATTACH() though. @@ -617,3 +624,23 @@ uart_bus_resume(device_t dev) sc = device_get_softc(dev); return (UART_ATTACH(sc)); } + +void +uart_grab(struct uart_devinfo *di) +{ + + uart_lock(di->hwmtx); + if (di->sc) + UART_GRAB(di->sc); + uart_unlock(di->hwmtx); +} + +void +uart_ungrab(struct uart_devinfo *di) +{ + + uart_lock(di->hwmtx); + if (di->sc) + UART_UNGRAB(di->sc); + uart_unlock(di->hwmtx); +} |
