From: Ivo van Doorn <ivdoorn@gmail.com>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org, users@rt2x00.serialmonkey.com
Subject: [PATCH 08/10] rt2x00: Simplify intf->delayed_flags locking
Date: Mon, 27 Dec 2010 15:06:57 +0100 [thread overview]
Message-ID: <201012271506.58485.IvDoorn@gmail.com> (raw)
In-Reply-To: <201012271506.37080.IvDoorn@gmail.com>
From: Helmut Schaa <helmut.schaa@googlemail.com>
Instead of protecting delayed_flags with a spinlock use atomic bitops to
make the code more readable.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
---
drivers/net/wireless/rt2x00/rt2x00.h | 7 +++++--
drivers/net/wireless/rt2x00/rt2x00dev.c | 15 +--------------
drivers/net/wireless/rt2x00/rt2x00mac.c | 4 +---
3 files changed, 7 insertions(+), 19 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 755b723..b3f77d4 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -347,6 +347,10 @@ struct link {
struct delayed_work watchdog_work;
};
+enum rt2x00_delayed_flags {
+ DELAYED_UPDATE_BEACON,
+};
+
/*
* Interface structure
* Per interface configuration details, this structure
@@ -374,8 +378,7 @@ struct rt2x00_intf {
/*
* Actions that needed rescheduling.
*/
- unsigned int delayed_flags;
-#define DELAYED_UPDATE_BEACON 0x00000001
+ unsigned long delayed_flags;
/*
* Software sequence counter, this is only required
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 97a8911..9597a03 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -110,19 +110,6 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
{
struct rt2x00_dev *rt2x00dev = data;
struct rt2x00_intf *intf = vif_to_intf(vif);
- int delayed_flags;
-
- /*
- * Copy all data we need during this action under the protection
- * of a spinlock. Otherwise race conditions might occur which results
- * into an invalid configuration.
- */
- spin_lock(&intf->lock);
-
- delayed_flags = intf->delayed_flags;
- intf->delayed_flags = 0;
-
- spin_unlock(&intf->lock);
/*
* It is possible the radio was disabled while the work had been
@@ -133,7 +120,7 @@ static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return;
- if (delayed_flags & DELAYED_UPDATE_BEACON)
+ if (test_and_clear_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags))
rt2x00queue_update_beacon(rt2x00dev, vif, true);
}
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c
index a2266c7..297d972 100644
--- a/drivers/net/wireless/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
@@ -444,9 +444,7 @@ static void rt2x00mac_set_tim_iter(void *data, u8 *mac,
vif->type != NL80211_IFTYPE_WDS)
return;
- spin_lock(&intf->lock);
- intf->delayed_flags |= DELAYED_UPDATE_BEACON;
- spin_unlock(&intf->lock);
+ set_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags);
}
int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
--
1.7.2.3
next prev parent reply other threads:[~2010-12-27 14:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-27 14:04 [PATCH 01/10] rt2x00: simplify txstatus_fifo handling Ivo van Doorn
2010-12-27 14:04 ` [PATCH 02/10] rt2x00: allow txstatus_fifo w/o txstatus_tasklet Ivo van Doorn
2010-12-27 14:05 ` [PATCH 03/10] rt2x00: Remove intf->bssid field Ivo van Doorn
2010-12-27 14:05 ` [PATCH 04/10] rt2x00: remove intf->mac field Ivo van Doorn
2010-12-27 14:05 ` [PATCH 05/10] rt2x00: Fix pointer errors Ivo van Doorn
2010-12-27 14:06 ` [PATCH 06/10] rt2x00: Fix panic on frame padding for rt2800 usb devices Ivo van Doorn
2010-12-27 14:06 ` [PATCH 07/10] rt2x00: Remove superfluous assignment of mpdu_density Ivo van Doorn
2010-12-27 14:06 ` Ivo van Doorn [this message]
2010-12-27 14:07 ` [PATCH 09/10] rt2x00: Remove unused interface spinlock Ivo van Doorn
2010-12-27 14:07 ` [PATCH 10/10] rt2x00: Fix comment about removed spinlock Ivo van Doorn
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