Hauke Mehrtens
15 years ago
parent
92ee7505d8
commit
7dcdcbbc24
@ -0,0 +1,81 @@ |
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--- a/net/wireless/compat-2.6.28.c
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+++ b/net/wireless/compat-2.6.28.c
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@@ -12,10 +12,11 @@
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28))
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-#include <linux/usb.h>
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-
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/* 2.6.28 compat code goes here */
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+#ifdef CONFIG_AR9170_USB
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+#include <linux/usb.h>
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+
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/*
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* Compat-wireless notes for USB backport stuff:
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*
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@@ -206,6 +207,7 @@ int usb_anchor_empty(struct usb_anchor *
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}
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EXPORT_SYMBOL_GPL(usb_anchor_empty);
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+#endif
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void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar)
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--- a/include/net/compat-2.6.28.h
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+++ b/include/net/compat-2.6.28.h
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@@ -9,7 +9,6 @@
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#include <linux/skbuff.h>
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#include <linux/if_ether.h>
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-#include <linux/usb.h>
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#ifndef ETH_P_PAE
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#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
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@@ -42,6 +41,8 @@ extern void usb_poison_urb(struct urb *u
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#endif
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extern void usb_unpoison_urb(struct urb *urb);
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+#ifdef CONFIG_AR9170_USB
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+#include <linux/usb.h>
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#if 0
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extern void usb_poison_anchored_urbs(struct usb_anchor *anchor);
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#endif
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@@ -49,6 +50,7 @@ extern void usb_poison_anchored_urbs(str
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extern struct urb *usb_get_from_anchor(struct usb_anchor *anchor);
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extern void usb_scuttle_anchored_urbs(struct usb_anchor *anchor);
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extern int usb_anchor_empty(struct usb_anchor *anchor);
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+#endif
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void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
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--- a/net/wireless/compat-2.6.29.c
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+++ b/net/wireless/compat-2.6.29.c
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@@ -12,6 +12,7 @@
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
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+#ifdef CONFIG_AR9170_USB
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#include <linux/usb.h>
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/**
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@@ -34,6 +35,7 @@ void usb_unpoison_anchored_urbs(struct u
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spin_unlock_irqrestore(&anchor->lock, flags);
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}
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EXPORT_SYMBOL_GPL(usb_unpoison_anchored_urbs);
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+#endif
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) */
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--- a/include/net/compat-2.6.29.h
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+++ b/include/net/compat-2.6.29.h
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@@ -41,7 +41,9 @@ static inline struct sk_buff *skb_queue_
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return skb->prev;
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}
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+#ifdef CONFIG_AR9170_USB
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extern void usb_unpoison_anchored_urbs(struct usb_anchor *anchor);
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+#endif
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#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)) */
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@ -1,117 +0,0 @@ |
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From: Johannes Berg <johannes@sipsolutions.net>
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Subject: mac80211: fix todo lock
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The key todo lock can be taken from different locks
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that require it to be _bh to avoid lock inversion
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due to (soft)irqs.
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This should fix the two problems reported by Bob and
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Gabor:
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http://mid.gmane.org/20090619113049.GB18956@hash.localnet
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http://mid.gmane.org/4A3FA376.8020307@openwrt.org
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Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
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Cc: Bob Copeland <me@bobcopeland.com>
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Cc: Gabor Juhos <juhosg@openwrt.org>
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---
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net/mac80211/key.c | 28 +++++++++++++++-------------
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1 file changed, 15 insertions(+), 13 deletions(-)
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--- a/net/mac80211/key.c
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+++ b/net/mac80211/key.c
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@@ -70,6 +70,8 @@ static DECLARE_WORK(todo_work, key_todo)
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*
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* @key: key to add to do item for
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* @flag: todo flag(s)
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+ *
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+ * Must be called with IRQs or softirqs disabled.
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*/
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static void add_todo(struct ieee80211_key *key, u32 flag)
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{
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@@ -143,9 +145,9 @@ static void ieee80211_key_enable_hw_acce
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ret = drv_set_key(key->local, SET_KEY, &sdata->vif, sta, &key->conf);
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if (!ret) {
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- spin_lock(&todo_lock);
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+ spin_lock_bh(&todo_lock);
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key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE;
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- spin_unlock(&todo_lock);
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+ spin_unlock_bh(&todo_lock);
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}
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if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP)
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@@ -167,12 +169,12 @@ static void ieee80211_key_disable_hw_acc
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if (!key || !key->local->ops->set_key)
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return;
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- spin_lock(&todo_lock);
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+ spin_lock_bh(&todo_lock);
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if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) {
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- spin_unlock(&todo_lock);
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+ spin_unlock_bh(&todo_lock);
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return;
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}
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- spin_unlock(&todo_lock);
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+ spin_unlock_bh(&todo_lock);
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sta = get_sta_for_key(key);
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sdata = key->sdata;
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@@ -191,9 +193,9 @@ static void ieee80211_key_disable_hw_acc
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wiphy_name(key->local->hw.wiphy),
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key->conf.keyidx, sta ? sta->addr : bcast_addr, ret);
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- spin_lock(&todo_lock);
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+ spin_lock_bh(&todo_lock);
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key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;
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- spin_unlock(&todo_lock);
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+ spin_unlock_bh(&todo_lock);
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}
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static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata,
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@@ -440,14 +442,14 @@ void ieee80211_key_link(struct ieee80211
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__ieee80211_key_replace(sdata, sta, old_key, key);
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- spin_unlock_irqrestore(&sdata->local->key_lock, flags);
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-
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/* free old key later */
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add_todo(old_key, KEY_FLAG_TODO_DELETE);
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add_todo(key, KEY_FLAG_TODO_ADD_DEBUGFS);
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if (netif_running(sdata->dev))
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add_todo(key, KEY_FLAG_TODO_HWACCEL_ADD);
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+
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+ spin_unlock_irqrestore(&sdata->local->key_lock, flags);
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}
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static void __ieee80211_key_free(struct ieee80211_key *key)
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@@ -550,7 +552,7 @@ static void __ieee80211_key_todo(void)
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*/
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synchronize_rcu();
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- spin_lock(&todo_lock);
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+ spin_lock_bh(&todo_lock);
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while (!list_empty(&todo_list)) {
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key = list_first_entry(&todo_list, struct ieee80211_key, todo);
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list_del_init(&key->todo);
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@@ -561,7 +563,7 @@ static void __ieee80211_key_todo(void)
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KEY_FLAG_TODO_HWACCEL_REMOVE |
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KEY_FLAG_TODO_DELETE);
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key->flags &= ~todoflags;
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- spin_unlock(&todo_lock);
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+ spin_unlock_bh(&todo_lock);
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work_done = false;
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@@ -594,9 +596,9 @@ static void __ieee80211_key_todo(void)
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WARN_ON(!work_done);
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- spin_lock(&todo_lock);
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+ spin_lock_bh(&todo_lock);
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}
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- spin_unlock(&todo_lock);
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+ spin_unlock_bh(&todo_lock);
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}
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void ieee80211_key_todo(void)
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@ -1,33 +0,0 @@ |
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From d2fa21debb4ea8c022b0fbed165eea821d19da9e Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Sat, 20 Jun 2009 23:57:22 +0200
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Subject: [PATCH] ath9k: wake up the chip for TSF reset
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If we are in NETWORK SLEEP state, AR_SLP32_TSF_WRITE_STATUS limit
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always exceeds in 'ath9k_hw_reset_tsf', because reading of the
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AR_SLP3 register always return with the magic 0xdeadbeef value.
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Changes-licensed-under: ISC
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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---
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drivers/net/wireless/ath/ath9k/hw.c | 2 ++
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1 files changed, 2 insertions(+), 0 deletions(-)
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--- a/drivers/net/wireless/ath/ath9k/hw.c
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+++ b/drivers/net/wireless/ath/ath9k/hw.c
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@@ -3803,6 +3803,7 @@ void ath9k_hw_reset_tsf(struct ath_hw *a
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{
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int count;
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+ ath9k_ps_wakeup(ah->ah_sc);
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count = 0;
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while (REG_READ(ah, AR_SLP32_MODE) & AR_SLP32_TSF_WRITE_STATUS) {
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count++;
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@@ -3814,6 +3815,7 @@ void ath9k_hw_reset_tsf(struct ath_hw *a
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udelay(10);
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}
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REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
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+ ath9k_ps_restore(ah->ah_sc);
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}
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bool ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting)
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@ -1,52 +0,0 @@ |
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From 9a0a0221024ddb4ddf0e33bb6fdbb3b02eaaf292 Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Sat, 20 Jun 2009 23:57:23 +0200
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Subject: [PATCH] ath9k: make use ath9k_hw_wait int ath9k_hw_reset_tsf
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We have a dedicated function for this kind of checks, use that
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instead of duplicating the code.
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Changes-licensed-under: ISC
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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---
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drivers/net/wireless/ath/ath9k/hw.c | 17 +++++------------
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drivers/net/wireless/ath/ath9k/hw.h | 1 +
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2 files changed, 6 insertions(+), 12 deletions(-)
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--- a/drivers/net/wireless/ath/ath9k/hw.c
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+++ b/drivers/net/wireless/ath/ath9k/hw.c
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@@ -3801,19 +3801,12 @@ void ath9k_hw_settsf64(struct ath_hw *ah
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void ath9k_hw_reset_tsf(struct ath_hw *ah)
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{
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- int count;
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-
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ath9k_ps_wakeup(ah->ah_sc);
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- count = 0;
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- while (REG_READ(ah, AR_SLP32_MODE) & AR_SLP32_TSF_WRITE_STATUS) {
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- count++;
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- if (count > 10) {
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- DPRINTF(ah->ah_sc, ATH_DBG_RESET,
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- "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
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- break;
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- }
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- udelay(10);
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- }
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+ if (!ath9k_hw_wait(ah, AR_SLP32_MODE, AR_SLP32_TSF_WRITE_STATUS, 0,
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+ AH_TSF_WRITE_TIMEOUT))
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+ DPRINTF(ah->ah_sc, ATH_DBG_RESET,
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+ "AR_SLP32_TSF_WRITE_STATUS limit exceeded\n");
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+
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REG_WRITE(ah, AR_RESET_TSF, AR_RESET_TSF_ONCE);
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ath9k_ps_restore(ah->ah_sc);
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}
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--- a/drivers/net/wireless/ath/ath9k/hw.h
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+++ b/drivers/net/wireless/ath/ath9k/hw.h
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@@ -95,6 +95,7 @@
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#define MAX_RATE_POWER 63
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#define AH_WAIT_TIMEOUT 100000 /* (us) */
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+#define AH_TSF_WRITE_TIMEOUT 100 /* (us) */
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#define AH_TIME_QUANTUM 10
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#define AR_KEYTABLE_SIZE 128
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#define POWER_UP_TIME 200000
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@ -1,67 +0,0 @@ |
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From 841c7e339c4775f4cc614c92aaea82f70fcafbdb Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Sun, 21 Jun 2009 16:59:53 +0200
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Subject: [PATCH 1/3] ath9k: serialize ath9k_hw_setpower calls
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Because ath9k_setpower is called from various contexts, we have to
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protect it against concurrent calls.
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Changes-licensed-under: ISC
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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---
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drivers/net/wireless/ath/ath9k/ath9k.h | 1 +
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drivers/net/wireless/ath/ath9k/hw.c | 15 ++++++++++++++-
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drivers/net/wireless/ath/ath9k/main.c | 1 +
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3 files changed, 16 insertions(+), 1 deletions(-)
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--- a/drivers/net/wireless/ath/ath9k/ath9k.h
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+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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@@ -544,6 +544,7 @@ struct ath_softc {
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int irq;
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spinlock_t sc_resetlock;
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spinlock_t sc_serial_rw;
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+ spinlock_t sc_pm_lock;
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struct mutex mutex;
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u8 curbssid[ETH_ALEN];
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--- a/drivers/net/wireless/ath/ath9k/hw.c
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+++ b/drivers/net/wireless/ath/ath9k/hw.c
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@@ -2738,7 +2738,8 @@ static bool ath9k_hw_set_power_awake(str
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return true;
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}
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-bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
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+static bool ath9k_hw_setpower_nolock(struct ath_hw *ah,
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+ enum ath9k_power_mode mode)
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{
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int status = true, setChip = true;
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static const char *modes[] = {
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@@ -2772,6 +2773,18 @@ bool ath9k_hw_setpower(struct ath_hw *ah
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return status;
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}
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+bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
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+{
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+ unsigned long flags;
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+ bool ret;
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+
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+ spin_lock_irqsave(&ah->ah_sc->sc_pm_lock, flags);
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+ ret = ath9k_hw_setpower_nolock(ah, mode);
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+ spin_unlock_irqrestore(&ah->ah_sc->sc_pm_lock, flags);
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+
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+ return ret;
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+}
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+
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/*
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* Helper for ASPM support.
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*
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--- a/drivers/net/wireless/ath/ath9k/main.c
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/main.c
|
|
||||||
@@ -1317,6 +1317,7 @@ static int ath_init(u16 devid, struct at
|
|
||||||
spin_lock_init(&sc->wiphy_lock);
|
|
||||||
spin_lock_init(&sc->sc_resetlock);
|
|
||||||
spin_lock_init(&sc->sc_serial_rw);
|
|
||||||
+ spin_lock_init(&sc->sc_pm_lock);
|
|
||||||
mutex_init(&sc->mutex);
|
|
||||||
tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc);
|
|
||||||
tasklet_init(&sc->bcon_tasklet, ath_beacon_tasklet,
|
|
||||||
@ -1,76 +0,0 @@ |
|||||||
From 900d70802f15e835b3dbbe8750313824aa30a118 Mon Sep 17 00:00:00 2001
|
|
||||||
From: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
Date: Sun, 21 Jun 2009 16:59:53 +0200
|
|
||||||
Subject: [PATCH 2/3] ath9k: uninline ath9k_ps_{wakeup,restore} functions
|
|
||||||
|
|
||||||
Uninline these functions before we add functional changes to them.
|
|
||||||
|
|
||||||
Changes-licensed-under: ISC
|
|
||||||
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
---
|
|
||||||
drivers/net/wireless/ath/ath9k/ath9k.h | 23 ++---------------------
|
|
||||||
drivers/net/wireless/ath/ath9k/hw.c | 21 +++++++++++++++++++++
|
|
||||||
2 files changed, 23 insertions(+), 21 deletions(-)
|
|
||||||
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
|
|
||||||
@@ -658,27 +658,8 @@ static inline int ath_ahb_init(void) { r
|
|
||||||
static inline void ath_ahb_exit(void) {};
|
|
||||||
#endif
|
|
||||||
|
|
||||||
-static inline void ath9k_ps_wakeup(struct ath_softc *sc)
|
|
||||||
-{
|
|
||||||
- if (atomic_inc_return(&sc->ps_usecount) == 1)
|
|
||||||
- if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) {
|
|
||||||
- sc->sc_ah->restore_mode = sc->sc_ah->power_mode;
|
|
||||||
- ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
- }
|
|
||||||
-}
|
|
||||||
-
|
|
||||||
-static inline void ath9k_ps_restore(struct ath_softc *sc)
|
|
||||||
-{
|
|
||||||
- if (atomic_dec_and_test(&sc->ps_usecount))
|
|
||||||
- if ((sc->hw->conf.flags & IEEE80211_CONF_PS) &&
|
|
||||||
- !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
|
|
||||||
- SC_OP_WAIT_FOR_CAB |
|
|
||||||
- SC_OP_WAIT_FOR_PSPOLL_DATA |
|
|
||||||
- SC_OP_WAIT_FOR_TX_ACK)))
|
|
||||||
- ath9k_hw_setpower(sc->sc_ah,
|
|
||||||
- sc->sc_ah->restore_mode);
|
|
||||||
-}
|
|
||||||
-
|
|
||||||
+void ath9k_ps_wakeup(struct ath_softc *sc);
|
|
||||||
+void ath9k_ps_restore(struct ath_softc *sc);
|
|
||||||
|
|
||||||
void ath9k_set_bssid_mask(struct ieee80211_hw *hw);
|
|
||||||
int ath9k_wiphy_add(struct ath_softc *sc);
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
@@ -2785,6 +2785,27 @@ bool ath9k_hw_setpower(struct ath_hw *ah
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
+void ath9k_ps_wakeup(struct ath_softc *sc)
|
|
||||||
+{
|
|
||||||
+ if (atomic_inc_return(&sc->ps_usecount) == 1)
|
|
||||||
+ if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) {
|
|
||||||
+ sc->sc_ah->restore_mode = sc->sc_ah->power_mode;
|
|
||||||
+ ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
+ }
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
+void ath9k_ps_restore(struct ath_softc *sc)
|
|
||||||
+{
|
|
||||||
+ if (atomic_dec_and_test(&sc->ps_usecount))
|
|
||||||
+ if ((sc->hw->conf.flags & IEEE80211_CONF_PS) &&
|
|
||||||
+ !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
|
|
||||||
+ SC_OP_WAIT_FOR_CAB |
|
|
||||||
+ SC_OP_WAIT_FOR_PSPOLL_DATA |
|
|
||||||
+ SC_OP_WAIT_FOR_TX_ACK)))
|
|
||||||
+ ath9k_hw_setpower(sc->sc_ah,
|
|
||||||
+ sc->sc_ah->restore_mode);
|
|
||||||
+}
|
|
||||||
+
|
|
||||||
/*
|
|
||||||
* Helper for ASPM support.
|
|
||||||
*
|
|
||||||
@ -1,82 +0,0 @@ |
|||||||
From 7446da6910f1368273a55ca99acba18828306a6e Mon Sep 17 00:00:00 2001
|
|
||||||
From: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
Date: Sun, 21 Jun 2009 16:59:53 +0200
|
|
||||||
Subject: [PATCH 3/3] ath9k: serialize ath9k_ps_{wakeup,restore} calls
|
|
||||||
|
|
||||||
These functions are changing the power mode of the chip, but this may
|
|
||||||
have unpredictable effects, if another code are trying to set the power
|
|
||||||
mode via 'ath9k_hw_setpower' in the same time from another context.
|
|
||||||
|
|
||||||
Changes-licensed-under: ISC
|
|
||||||
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
---
|
|
||||||
drivers/net/wireless/ath/ath9k/ath9k.h | 2 +-
|
|
||||||
drivers/net/wireless/ath/ath9k/hw.c | 42 ++++++++++++++++++++++----------
|
|
||||||
2 files changed, 30 insertions(+), 14 deletions(-)
|
|
||||||
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
|
|
||||||
@@ -561,7 +561,7 @@ struct ath_softc {
|
|
||||||
u32 keymax;
|
|
||||||
DECLARE_BITMAP(keymap, ATH_KEYMAX);
|
|
||||||
u8 splitmic;
|
|
||||||
- atomic_t ps_usecount;
|
|
||||||
+ unsigned long ps_usecount;
|
|
||||||
enum ath9k_int imask;
|
|
||||||
enum ath9k_ht_extprotspacing ht_extprotspacing;
|
|
||||||
enum ath9k_ht_macmode tx_chan_width;
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
@@ -2787,23 +2787,39 @@ bool ath9k_hw_setpower(struct ath_hw *ah
|
|
||||||
|
|
||||||
void ath9k_ps_wakeup(struct ath_softc *sc)
|
|
||||||
{
|
|
||||||
- if (atomic_inc_return(&sc->ps_usecount) == 1)
|
|
||||||
- if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) {
|
|
||||||
- sc->sc_ah->restore_mode = sc->sc_ah->power_mode;
|
|
||||||
- ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
- }
|
|
||||||
+ unsigned long flags;
|
|
||||||
+
|
|
||||||
+ spin_lock_irqsave(&sc->sc_pm_lock, flags);
|
|
||||||
+ if (++sc->ps_usecount != 1)
|
|
||||||
+ goto unlock;
|
|
||||||
+
|
|
||||||
+ if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) {
|
|
||||||
+ sc->sc_ah->restore_mode = sc->sc_ah->power_mode;
|
|
||||||
+ ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
+ }
|
|
||||||
+
|
|
||||||
+ unlock:
|
|
||||||
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
|
|
||||||
}
|
|
||||||
|
|
||||||
void ath9k_ps_restore(struct ath_softc *sc)
|
|
||||||
{
|
|
||||||
- if (atomic_dec_and_test(&sc->ps_usecount))
|
|
||||||
- if ((sc->hw->conf.flags & IEEE80211_CONF_PS) &&
|
|
||||||
- !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
|
|
||||||
- SC_OP_WAIT_FOR_CAB |
|
|
||||||
- SC_OP_WAIT_FOR_PSPOLL_DATA |
|
|
||||||
- SC_OP_WAIT_FOR_TX_ACK)))
|
|
||||||
- ath9k_hw_setpower(sc->sc_ah,
|
|
||||||
- sc->sc_ah->restore_mode);
|
|
||||||
+ unsigned long flags;
|
|
||||||
+
|
|
||||||
+ spin_lock_irqsave(&sc->sc_pm_lock, flags);
|
|
||||||
+ if (--sc->ps_usecount != 0)
|
|
||||||
+ goto unlock;
|
|
||||||
+
|
|
||||||
+ if ((sc->hw->conf.flags & IEEE80211_CONF_PS) &&
|
|
||||||
+ !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
|
|
||||||
+ SC_OP_WAIT_FOR_CAB |
|
|
||||||
+ SC_OP_WAIT_FOR_PSPOLL_DATA |
|
|
||||||
+ SC_OP_WAIT_FOR_TX_ACK)))
|
|
||||||
+ ath9k_hw_setpower_nolock(sc->sc_ah,
|
|
||||||
+ sc->sc_ah->restore_mode);
|
|
||||||
+
|
|
||||||
+ unlock:
|
|
||||||
+ spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
@ -1,109 +0,0 @@ |
|||||||
From c96f9c17f71213a562ce20d85a7418d5549235cc Mon Sep 17 00:00:00 2001
|
|
||||||
From: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
Date: Fri, 24 Jul 2009 16:34:37 +0200
|
|
||||||
Subject: [PATCH 1/2] ath9k: fix race with IEEE80211_CONF_PS checks
|
|
||||||
|
|
||||||
There is a small window where the mac80211 changes the IEEE80211_CONF_PS
|
|
||||||
flag, and then informs the driver about the change. We have a race
|
|
||||||
condition if we are checking the flag in the same time. Avoid it by
|
|
||||||
introducing a local variable, and using that instead of checking the
|
|
||||||
IEEE80211_CONF_PS flag directly.
|
|
||||||
|
|
||||||
This fix the problem reported by Luis:
|
|
||||||
http://article.gmane.org/gmane.linux.kernel.wireless.general/34363
|
|
||||||
|
|
||||||
Changes-licensed-under: ISC
|
|
||||||
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
---
|
|
||||||
drivers/net/wireless/ath/ath9k/ath9k.h | 1 +
|
|
||||||
drivers/net/wireless/ath/ath9k/hw.c | 17 +++++++----------
|
|
||||||
drivers/net/wireless/ath/ath9k/hw.h | 1 -
|
|
||||||
drivers/net/wireless/ath/ath9k/main.c | 8 ++++----
|
|
||||||
4 files changed, 12 insertions(+), 15 deletions(-)
|
|
||||||
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
|
|
||||||
@@ -561,6 +561,7 @@ struct ath_softc {
|
|
||||||
u32 keymax;
|
|
||||||
DECLARE_BITMAP(keymap, ATH_KEYMAX);
|
|
||||||
u8 splitmic;
|
|
||||||
+ bool ps_enabled;
|
|
||||||
unsigned long ps_usecount;
|
|
||||||
enum ath9k_int imask;
|
|
||||||
enum ath9k_ht_extprotspacing ht_extprotspacing;
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
@@ -2793,10 +2793,8 @@ void ath9k_ps_wakeup(struct ath_softc *s
|
|
||||||
if (++sc->ps_usecount != 1)
|
|
||||||
goto unlock;
|
|
||||||
|
|
||||||
- if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE) {
|
|
||||||
- sc->sc_ah->restore_mode = sc->sc_ah->power_mode;
|
|
||||||
+ if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
|
|
||||||
ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
- }
|
|
||||||
|
|
||||||
unlock:
|
|
||||||
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
|
|
||||||
@@ -2810,13 +2808,12 @@ void ath9k_ps_restore(struct ath_softc *
|
|
||||||
if (--sc->ps_usecount != 0)
|
|
||||||
goto unlock;
|
|
||||||
|
|
||||||
- if ((sc->hw->conf.flags & IEEE80211_CONF_PS) &&
|
|
||||||
- !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
|
|
||||||
- SC_OP_WAIT_FOR_CAB |
|
|
||||||
- SC_OP_WAIT_FOR_PSPOLL_DATA |
|
|
||||||
- SC_OP_WAIT_FOR_TX_ACK)))
|
|
||||||
- ath9k_hw_setpower_nolock(sc->sc_ah,
|
|
||||||
- sc->sc_ah->restore_mode);
|
|
||||||
+ if (sc->ps_enabled &&
|
|
||||||
+ !(sc->sc_flags & (SC_OP_WAIT_FOR_BEACON |
|
|
||||||
+ SC_OP_WAIT_FOR_CAB |
|
|
||||||
+ SC_OP_WAIT_FOR_PSPOLL_DATA |
|
|
||||||
+ SC_OP_WAIT_FOR_TX_ACK)))
|
|
||||||
+ ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
|
|
||||||
|
|
||||||
unlock:
|
|
||||||
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/hw.h
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/hw.h
|
|
||||||
@@ -418,7 +418,6 @@ struct ath_hw {
|
|
||||||
|
|
||||||
enum nl80211_iftype opmode;
|
|
||||||
enum ath9k_power_mode power_mode;
|
|
||||||
- enum ath9k_power_mode restore_mode;
|
|
||||||
|
|
||||||
struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
|
|
||||||
struct ar5416Stats stats;
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/main.c
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/main.c
|
|
||||||
@@ -496,8 +496,7 @@ static void ath9k_tasklet(unsigned long
|
|
||||||
if (status & ATH9K_INT_TX)
|
|
||||||
ath_tx_tasklet(sc);
|
|
||||||
|
|
||||||
- if ((status & ATH9K_INT_TSFOOR) &&
|
|
||||||
- (sc->hw->conf.flags & IEEE80211_CONF_PS)) {
|
|
||||||
+ if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) {
|
|
||||||
/*
|
|
||||||
* TSF sync does not look correct; remain awake to sync with
|
|
||||||
* the next Beacon.
|
|
||||||
@@ -2001,7 +2000,7 @@ static int ath9k_tx(struct ieee80211_hw
|
|
||||||
goto exit;
|
|
||||||
}
|
|
||||||
|
|
||||||
- if (sc->hw->conf.flags & IEEE80211_CONF_PS) {
|
|
||||||
+ if (sc->ps_enabled) {
|
|
||||||
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
|
|
||||||
/*
|
|
||||||
* mac80211 does not set PM field for normal data frames, so we
|
|
||||||
@@ -2270,8 +2269,9 @@ static int ath9k_config(struct ieee80211
|
|
||||||
}
|
|
||||||
ath9k_hw_setrxabort(sc->sc_ah, 1);
|
|
||||||
}
|
|
||||||
- ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);
|
|
||||||
+ sc->ps_enabled = true;
|
|
||||||
} else {
|
|
||||||
+ sc->ps_enabled = false;
|
|
||||||
ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
if (!(ah->caps.hw_caps &
|
|
||||||
ATH9K_HW_CAP_AUTOSLEEP)) {
|
|
||||||
@ -1,45 +0,0 @@ |
|||||||
From 349626c9a263b41822a0c5a29061964b4a71ec3f Mon Sep 17 00:00:00 2001
|
|
||||||
From: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
Date: Thu, 23 Jul 2009 09:55:52 +0200
|
|
||||||
Subject: [PATCH 2/2] ath9k: get rid of unnecessary setpower calls
|
|
||||||
|
|
||||||
We are using setpower routines regardless of the current power mode.
|
|
||||||
Don't bother the hardware, if it is not necessary.
|
|
||||||
|
|
||||||
Changes-licensed-under: ISC
|
|
||||||
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
|
|
||||||
---
|
|
||||||
drivers/net/wireless/ath/ath9k/hw.c | 8 ++++++--
|
|
||||||
1 files changed, 6 insertions(+), 2 deletions(-)
|
|
||||||
|
|
||||||
--- a/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
+++ b/drivers/net/wireless/ath/ath9k/hw.c
|
|
||||||
@@ -475,6 +475,8 @@ static struct ath_hw *ath9k_hw_newstate(
|
|
||||||
|
|
||||||
ah->gbeacon_rate = 0;
|
|
||||||
|
|
||||||
+ ah->power_mode = ATH9K_PM_UNDEFINED;
|
|
||||||
+
|
|
||||||
return ah;
|
|
||||||
}
|
|
||||||
|
|
||||||
@@ -2749,6 +2751,9 @@ static bool ath9k_hw_setpower_nolock(str
|
|
||||||
"UNDEFINED"
|
|
||||||
};
|
|
||||||
|
|
||||||
+ if (ah->power_mode == mode)
|
|
||||||
+ return status;
|
|
||||||
+
|
|
||||||
DPRINTF(ah->ah_sc, ATH_DBG_RESET, "%s -> %s\n",
|
|
||||||
modes[ah->power_mode], modes[mode]);
|
|
||||||
|
|
||||||
@@ -2793,8 +2798,7 @@ void ath9k_ps_wakeup(struct ath_softc *s
|
|
||||||
if (++sc->ps_usecount != 1)
|
|
||||||
goto unlock;
|
|
||||||
|
|
||||||
- if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
|
|
||||||
- ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
+ ath9k_hw_setpower_nolock(sc->sc_ah, ATH9K_PM_AWAKE);
|
|
||||||
|
|
||||||
unlock:
|
|
||||||
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
|
|
||||||
Loading…
Reference in new issue