xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cfg80211: don't allow WoWLAN support without CONFIG_PM

Browse Source 
When CONFIG_PM is disabled, no device can possibly
support WoWLAN since it can't go to sleep to start
with. Due to this, mac80211 had even rejected the
hardware registration. By making all the code and
data for WoWLAN depend on CONFIG_PM we can promote
this runtime error to a compile-time error.

Add #ifdef around all WoWLAN code to remove it in
systems that don't need it as they never suspend.

Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2012-06-27 09:23:48 +02:00
parent cc45ae547b
commit dfb89c56ad
6 changed files with 19 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
net/mac80211/main.c
View File

@@ -706,12 +706,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
local->hw.offchannel_tx_hw_queue >= local->hw.queues))
return -EINVAL;
if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns)
#ifdef CONFIG_PM
&& (!local->ops->suspend || !local->ops->resume)
#endif
)
if ((hw->wiphy->wowlan.flags || hw->wiphy->wowlan.n_patterns) &&
(!local->ops->suspend || !local->ops->resume))
return -EINVAL;
#endif
if ((hw->flags & IEEE80211_HW_SCAN_WHILE_IDLE) && !local->ops->hw_scan)
return -EINVAL;

4
net/wireless/core.c
View File

@@ -421,9 +421,11 @@ int wiphy_register(struct wiphy *wiphy)
int i;
u16 ifmodes = wiphy->interface_modes;
#ifdef CONFIG_PM
if (WARN_ON((wiphy->wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
!(wiphy->wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)))
return -EINVAL;
#endif
if (WARN_ON(wiphy->ap_sme_capa &&
!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME)))
@@ -500,12 +502,14 @@ int wiphy_register(struct wiphy *wiphy)
return -EINVAL;
}
#ifdef CONFIG_PM
if (rdev->wiphy.wowlan.n_patterns) {
if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len ||
rdev->wiphy.wowlan.pattern_min_len >
rdev->wiphy.wowlan.pattern_max_len))
return -EINVAL;
}
#endif
/* check and set up bitrates */
ieee80211_set_bitrate_flags(wiphy);

6
net/wireless/nl80211.c
View File

@@ -1112,6 +1112,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
nla_nest_end(msg, nl_ifs);
}
#ifdef CONFIG_PM
if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
struct nlattr *nl_wowlan;
@@ -1152,6 +1153,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
nla_nest_end(msg, nl_wowlan);
}
#endif
if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
dev->wiphy.software_iftypes))
@@ -6276,6 +6278,7 @@ static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
return cfg80211_leave_mesh(rdev, dev);
}
#ifdef CONFIG_PM
static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -6504,6 +6507,7 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
kfree(new_triggers.patterns);
return err;
}
#endif
static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
{
@@ -7158,6 +7162,7 @@ static struct genl_ops nl80211_ops[] = {
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
#ifdef CONFIG_PM
{
.cmd = NL80211_CMD_GET_WOWLAN,
.doit = nl80211_get_wowlan,
@@ -7174,6 +7179,7 @@ static struct genl_ops nl80211_ops[] = {
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
#endif
{
.cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
.doit = nl80211_set_rekey_data,