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cfg80211: add PM hooks 

This should help implement suspend/resume in mac80211, these
hooks will be run before the device is suspended and after it
resumes. Therefore, they can touch the hardware as much as
they want to.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-01-19 11:20:52 -05:00 committed by John W. Linville
parent e0463f501f
commit 0378b3f1c4
2 changed files with 36 additions and 0 deletions
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6
include/net/cfg80211.h
View File

@ -472,6 +472,9 @@ struct ieee80211_channel;
* wireless extensions but this is subject to reevaluation as soon as this
* code is used more widely and we have a first user without wext.
*
* @suspend: wiphy device needs to be suspended
* @resume: wiphy device needs to be resumed
*
* @add_virtual_intf: create a new virtual interface with the given name,
* must set the struct wireless_dev's iftype.
*
@ -525,6 +528,9 @@ struct ieee80211_channel;
* @set_mgmt_extra_ie: Set extra IE data for management frames
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy);
int (*resume)(struct wiphy *wiphy);
int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params);

30
net/wireless/sysfs.c
View File

@ -55,6 +55,34 @@ static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
}
#endif
static int wiphy_suspend(struct device *dev, pm_message_t state)
{
struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
int ret = 0;
if (rdev->ops->suspend) {
rtnl_lock();
ret = rdev->ops->suspend(&rdev->wiphy);
rtnl_unlock();
}
return ret;
}
static int wiphy_resume(struct device *dev)
{
struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
int ret = 0;
if (rdev->ops->resume) {
rtnl_lock();
ret = rdev->ops->resume(&rdev->wiphy);
rtnl_unlock();
}
return ret;
}
struct class ieee80211_class = {
.name = "ieee80211",
.owner = THIS_MODULE,
@ -63,6 +91,8 @@ struct class ieee80211_class = {
#ifdef CONFIG_HOTPLUG
.dev_uevent = wiphy_uevent,
#endif
.suspend = wiphy_suspend,
.resume = wiphy_resume,
};
int wiphy_sysfs_init(void)