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

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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>
This commit is contained in:
Alan Stern 2011-08-19 23:49:48 +02:00 committed by Rafael J. Wysocki
parent 311aab73d2
commit 5b1b0b812a
15 changed files with 32 additions and 32 deletions
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8
Documentation/usb/power-management.txt
View File

@ -439,10 +439,10 @@ cause autosuspends to fail with -EBUSY if the driver needs to use the
device.
External suspend calls should never be allowed to fail in this way,
only autosuspend calls. The driver can tell them apart by checking
the PM_EVENT_AUTO bit in the message.event argument to the suspend
method; this bit will be set for internal PM events (autosuspend) and
clear for external PM events.
only autosuspend calls. The driver can tell them apart by applying
the PMSG_IS_AUTO() macro to the message argument to the suspend
method; it will return True for internal PM events (autosuspend) and
False for external PM events.
Mutual exclusion

2
drivers/bluetooth/btusb.c
View File

@ -1103,7 +1103,7 @@ static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
return 0;
spin_lock_irq(&data->txlock);
if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
set_bit(BTUSB_SUSPENDING, &data->flags);
spin_unlock_irq(&data->txlock);
} else {

2
drivers/hid/hid-picolcd.c
View File

@ -2409,7 +2409,7 @@ static int picolcd_raw_event(struct hid_device *hdev,
#ifdef CONFIG_PM
static int picolcd_suspend(struct hid_device *hdev, pm_message_t message)
{
if (message.event & PM_EVENT_AUTO)
if (PMSG_IS_AUTO(message))
return 0;
picolcd_suspend_backlight(hid_get_drvdata(hdev));

7
drivers/hid/usbhid/hid-core.c
View File

@ -1332,7 +1332,7 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
struct usbhid_device *usbhid = hid->driver_data;
int status;
if (message.event & PM_EVENT_AUTO) {
if (PMSG_IS_AUTO(message)) {
spin_lock_irq(&usbhid->lock); /* Sync with error handler */
if (!test_bit(HID_RESET_PENDING, &usbhid->iofl)
&& !test_bit(HID_CLEAR_HALT, &usbhid->iofl)
@ -1367,7 +1367,7 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
return -EIO;
}
if (!ignoreled && (message.event & PM_EVENT_AUTO)) {
if (!ignoreled && PMSG_IS_AUTO(message)) {
spin_lock_irq(&usbhid->lock);
if (test_bit(HID_LED_ON, &usbhid->iofl)) {
spin_unlock_irq(&usbhid->lock);
@ -1380,8 +1380,7 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
hid_cancel_delayed_stuff(usbhid);
hid_cease_io(usbhid);
if ((message.event & PM_EVENT_AUTO) &&
test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) {
if (PMSG_IS_AUTO(message) && test_bit(HID_KEYS_PRESSED, &usbhid->iofl)) {
/* lost race against keypresses */
status = hid_start_in(hid);
if (status < 0)

2
drivers/net/usb/usbnet.c
View File

@ -1470,7 +1470,7 @@ int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
if (!dev->suspend_count++) {
spin_lock_irq(&dev->txq.lock);
/* don't autosuspend while transmitting */
if (dev->txq.qlen && (message.event & PM_EVENT_AUTO)) {
if (dev->txq.qlen && PMSG_IS_AUTO(message)) {
spin_unlock_irq(&dev->txq.lock);
return -EBUSY;
} else {

4
drivers/net/wimax/i2400m/usb.c
View File

@ -599,7 +599,7 @@ void i2400mu_disconnect(struct usb_interface *iface)
*
* As well, the device might refuse going to sleep for whichever
* reason. In this case we just fail. For system suspend/hibernate,
* we *can't* fail. We check PM_EVENT_AUTO to see if the
* we *can't* fail. We check PMSG_IS_AUTO to see if the
* suspend call comes from the USB stack or from the system and act
* in consequence.
*
@ -615,7 +615,7 @@ int i2400mu_suspend(struct usb_interface *iface, pm_message_t pm_msg)
struct i2400m *i2400m = &i2400mu->i2400m;
#ifdef CONFIG_PM
if (pm_msg.event & PM_EVENT_AUTO)
if (PMSG_IS_AUTO(pm_msg))
is_autosuspend = 1;
#endif

2
drivers/usb/class/cdc-acm.c
View File

@ -1305,7 +1305,7 @@ static int acm_suspend(struct usb_interface *intf, pm_message_t message)
struct acm *acm = usb_get_intfdata(intf);
int cnt;
if (message.event & PM_EVENT_AUTO) {
if (PMSG_IS_AUTO(message)) {
int b;
spin_lock_irq(&acm->write_lock);

6
drivers/usb/class/cdc-wdm.c
View File

@ -798,11 +798,11 @@ static int wdm_suspend(struct usb_interface *intf, pm_message_t message)
dev_dbg(&desc->intf->dev, "wdm%d_suspend\n", intf->minor);
/* if this is an autosuspend the caller does the locking */
if (!(message.event & PM_EVENT_AUTO))
if (!PMSG_IS_AUTO(message))
mutex_lock(&desc->lock);
spin_lock_irq(&desc->iuspin);
if ((message.event & PM_EVENT_AUTO) &&
if (PMSG_IS_AUTO(message) &&
(test_bit(WDM_IN_USE, &desc->flags)
|| test_bit(WDM_RESPONDING, &desc->flags))) {
spin_unlock_irq(&desc->iuspin);
@ -815,7 +815,7 @@ static int wdm_suspend(struct usb_interface *intf, pm_message_t message)
kill_urbs(desc);
cancel_work_sync(&desc->rxwork);
}
if (!(message.event & PM_EVENT_AUTO))
if (!PMSG_IS_AUTO(message))
mutex_unlock(&desc->lock);
return rv;

9
drivers/usb/core/driver.c
View File

@ -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;
}

4
drivers/usb/core/hcd.c
View File

@ -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;

10
drivers/usb/core/hub.c
View File

@ -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;
}
}

2
drivers/usb/serial/sierra.c
View File

@ -1009,7 +1009,7 @@ static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
struct sierra_intf_private *intfdata;
int b;
if (message.event & PM_EVENT_AUTO) {
if (PMSG_IS_AUTO(message)) {
intfdata = serial->private;
spin_lock_irq(&intfdata->susp_lock);
b = intfdata->in_flight;

2
drivers/usb/serial/usb_wwan.c
View File

@ -651,7 +651,7 @@ int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message)
dbg("%s entered", __func__);
if (message.event & PM_EVENT_AUTO) {
if (PMSG_IS_AUTO(message)) {
spin_lock_irq(&intfdata->susp_lock);
b = intfdata->in_flight;
spin_unlock_irq(&intfdata->susp_lock);

2
include/linux/pm.h
View File

@ -366,6 +366,8 @@ extern struct dev_pm_ops generic_subsys_pm_ops;
#define PMSG_AUTO_RESUME ((struct pm_message) \
{ .event = PM_EVENT_AUTO_RESUME, })
#define PMSG_IS_AUTO(msg) (((msg).event & PM_EVENT_AUTO) != 0)
/**
* Device run-time power management status.
*

2
sound/usb/card.c
View File

@ -628,7 +628,7 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
if (chip == (void *)-1L)
return 0;
if (!(message.event & PM_EVENT_AUTO)) {
if (!PMSG_IS_AUTO(message)) {
snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
if (!chip->num_suspended_intf++) {
list_for_each(p, &chip->pcm_list) {