PM / Runtime: Add macro to test for runtime PM events

This patch (as1482) adds a macro for testing whether or not a
pm_message value represents an autosuspend or autoresume (i.e., a
runtime PM) event.  Encapsulating this notion seems preferable to
open-coding the test all over the place.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

3 files changed, 11 insertions, 12 deletions

diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 34e3da5aa72a..e03042883c68 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1046,8 +1046,7 @@ static int usb_resume_device(struct usb_device *udev, pm_message_t msg)
 	/* Non-root devices on a full/low-speed bus must wait for their
 	 * companion high-speed root hub, in case a handoff is needed.
 	 */
-	if (!(msg.event & PM_EVENT_AUTO) && udev->parent &&
-			udev->bus->hs_companion)
+	if (!PMSG_IS_AUTO(msg) && udev->parent && udev->bus->hs_companion)
 		device_pm_wait_for_dev(&udev->dev,
 				&udev->bus->hs_companion->root_hub->dev);
 
@@ -1075,7 +1074,7 @@ static int usb_suspend_interface(struct usb_device *udev,
 
 	if (driver->suspend) {
 		status = driver->suspend(intf, msg);
-		if (status && !(msg.event & PM_EVENT_AUTO))
+		if (status && !PMSG_IS_AUTO(msg))
 			dev_err(&intf->dev, "%s error %d\n",
 					"suspend", status);
 	} else {
@@ -1189,7 +1188,7 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
 			status = usb_suspend_interface(udev, intf, msg);
 
 			/* Ignore errors during system sleep transitions */
-			if (!(msg.event & PM_EVENT_AUTO))
+			if (!PMSG_IS_AUTO(msg))
 				status = 0;
 			if (status != 0)
 				break;
@@ -1199,7 +1198,7 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
 		status = usb_suspend_device(udev, msg);
 
 		/* Again, ignore errors during system sleep transitions */
-		if (!(msg.event & PM_EVENT_AUTO))
+		if (!PMSG_IS_AUTO(msg))
 			status = 0;
 	}
 
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 8669ba3fe794..da582f4e486b 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1960,7 +1960,7 @@ int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg)
 	int		old_state = hcd->state;
 
 	dev_dbg(&rhdev->dev, "bus %s%s\n",
-			(msg.event & PM_EVENT_AUTO ? "auto-" : ""), "suspend");
+			(PMSG_IS_AUTO(msg) ? "auto-" : ""), "suspend");
 	if (HCD_DEAD(hcd)) {
 		dev_dbg(&rhdev->dev, "skipped %s of dead bus\n", "suspend");
 		return 0;
@@ -1996,7 +1996,7 @@ int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg)
 	int		old_state = hcd->state;
 
 	dev_dbg(&rhdev->dev, "usb %s%s\n",
-			(msg.event & PM_EVENT_AUTO ? "auto-" : ""), "resume");
+			(PMSG_IS_AUTO(msg) ? "auto-" : ""), "resume");
 	if (HCD_DEAD(hcd)) {
 		dev_dbg(&rhdev->dev, "skipped %s of dead bus\n", "resume");
 		return 0;
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index a428aa080a36..ee50e0bf84e8 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2342,7 +2342,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 			dev_dbg(&udev->dev, "won't remote wakeup, status %d\n",
 					status);
 			/* bail if autosuspend is requested */
-			if (msg.event & PM_EVENT_AUTO)
+			if (PMSG_IS_AUTO(msg))
 				return status;
 		}
 	}
@@ -2367,12 +2367,12 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 				USB_CTRL_SET_TIMEOUT);
 
 		/* System sleep transitions should never fail */
-		if (!(msg.event & PM_EVENT_AUTO))
+		if (!PMSG_IS_AUTO(msg))
 			status = 0;
 	} else {
 		/* device has up to 10 msec to fully suspend */
 		dev_dbg(&udev->dev, "usb %ssuspend\n",
-				(msg.event & PM_EVENT_AUTO ? "auto-" : ""));
+				(PMSG_IS_AUTO(msg) ? "auto-" : ""));
 		usb_set_device_state(udev, USB_STATE_SUSPENDED);
 		msleep(10);
 	}
@@ -2523,7 +2523,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
 	} else {
 		/* drive resume for at least 20 msec */
 		dev_dbg(&udev->dev, "usb %sresume\n",
-				(msg.event & PM_EVENT_AUTO ? "auto-" : ""));
+				(PMSG_IS_AUTO(msg) ? "auto-" : ""));
 		msleep(25);
 
 		/* Virtual root hubs can trigger on GET_PORT_STATUS to
@@ -2625,7 +2625,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
 		udev = hdev->children [port1-1];
 		if (udev && udev->can_submit) {
 			dev_warn(&intf->dev, "port %d nyet suspended\n", port1);
-			if (msg.event & PM_EVENT_AUTO)
+			if (PMSG_IS_AUTO(msg))
 				return -EBUSY;
 		}
 	}