diff options
Diffstat (limited to 'drivers/pnp/driver.c')
| -rw-r--r-- | drivers/pnp/driver.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c index d3ccce706ab4..15fb758a9e52 100644 --- a/drivers/pnp/driver.c +++ b/drivers/pnp/driver.c @@ -146,10 +146,57 @@ static int pnp_bus_match(struct device *dev, struct device_driver *drv) return 1; } +static int pnp_bus_suspend(struct device *dev, pm_message_t state) +{ + struct pnp_dev * pnp_dev = to_pnp_dev(dev); + struct pnp_driver * pnp_drv = pnp_dev->driver; + int error; + + if (!pnp_drv) + return 0; + + if (pnp_drv->suspend) { + error = pnp_drv->suspend(pnp_dev, state); + if (error) + return error; + } + + if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE) && + pnp_can_disable(pnp_dev)) { + error = pnp_stop_dev(pnp_dev); + if (error) + return error; + } + + return 0; +} + +static int pnp_bus_resume(struct device *dev) +{ + struct pnp_dev * pnp_dev = to_pnp_dev(dev); + struct pnp_driver * pnp_drv = pnp_dev->driver; + int error; + + if (!pnp_drv) + return 0; + + if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) { + error = pnp_start_dev(pnp_dev); + if (error) + return error; + } + + if (pnp_drv->resume) + return pnp_drv->resume(pnp_dev); + + return 0; +} struct bus_type pnp_bus_type = { .name = "pnp", .match = pnp_bus_match, + .suspend = pnp_bus_suspend, + .resume = pnp_bus_resume, }; |