From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxx>
---
include/net/cfg80211.h | 6 ++++++
net/wireless/sysfs.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 23c0ab7..0432eb6 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -450,6 +450,9 @@ 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.
*
@@ -499,6 +502,9 @@ struct ieee80211_channel;
* @set_channel: Set channel
*/
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);
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
index 29f820e..021cda6 100644
--- a/net/wireless/sysfs.c
+++ b/net/wireless/sysfs.c
@@ -60,6 +60,34 @@ 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,
@@ -68,6 +96,8 @@ struct class ieee80211_class = {
#ifdef CONFIG_HOTPLUG
.dev_uevent = wiphy_uevent,
#endif
+ .suspend = wiphy_suspend,
+ .resume = wiphy_resume,
};
int wiphy_sysfs_init(void)
--
1.6.0.4
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