Merge git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index d3ccce706ab..15fb758a9e5 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,
 };