From: Arik Nemtsov <arik@wizery.com>
To: <linux-wireless@vger.kernel.org>
Cc: Luciano Coelho <coelho@ti.com>, Arik Nemtsov <arik@wizery.com>
Subject: [PATCH 2/7] wl12xx: change bits in the link_map under spin lock
Date: Tue, 28 Feb 2012 00:41:29 +0200 [thread overview]
Message-ID: <1330382494-31148-2-git-send-email-arik@wizery.com> (raw)
In-Reply-To: <1330382494-31148-1-git-send-email-arik@wizery.com>
These bits are used in op_tx to determine if a packet should be dropped.
As such we should use the spin lock to sync the state.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
---
drivers/net/wireless/wl12xx/cmd.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/cmd.c b/drivers/net/wireless/wl12xx/cmd.c
index b776d9d..ef994da 100644
--- a/drivers/net/wireless/wl12xx/cmd.c
+++ b/drivers/net/wireless/wl12xx/cmd.c
@@ -459,23 +459,32 @@ out:
int wl12xx_allocate_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
{
+ unsigned long flags;
u8 link = find_first_zero_bit(wl->links_map, WL12XX_MAX_LINKS);
if (link >= WL12XX_MAX_LINKS)
return -EBUSY;
+ /* these bits are used by op_tx */
+ spin_lock_irqsave(&wl->wl_lock, flags);
__set_bit(link, wl->links_map);
__set_bit(link, wlvif->links_map);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
*hlid = link;
return 0;
}
void wl12xx_free_link(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 *hlid)
{
+ unsigned long flags;
+
if (*hlid == WL12XX_INVALID_LINK_ID)
return;
+ /* these bits are used by op_tx */
+ spin_lock_irqsave(&wl->wl_lock, flags);
__clear_bit(*hlid, wl->links_map);
__clear_bit(*hlid, wlvif->links_map);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
*hlid = WL12XX_INVALID_LINK_ID;
}
--
1.7.5.4
next prev parent reply other threads:[~2012-02-27 22:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-27 22:41 [PATCH 1/7] wl12xx: set the ELP entry delay to the FW dyn-ps timeout Arik Nemtsov
2012-02-27 22:41 ` Arik Nemtsov [this message]
2012-02-27 22:41 ` [PATCH 3/7] wl12xx: reset link Tx queues when freeing it Arik Nemtsov
2012-02-28 9:51 ` Luciano Coelho
2012-02-28 10:09 ` Arik Nemtsov
2012-02-29 8:31 ` Kalle Valo
2012-02-29 8:39 ` Luciano Coelho
2012-02-27 22:41 ` [PATCH 4/7] wl12xx: avoid starving the system hlid Arik Nemtsov
2012-02-27 22:41 ` [PATCH 5/7] wl12xx: flush all Tx queues on tx_flush timeout Arik Nemtsov
2012-02-27 22:41 ` [PATCH 6/7] wl12xx: flush Tx during suspend and 802.11h chan switch Arik Nemtsov
2012-02-27 22:41 ` [PATCH 7/7] wl12xx: increase dynamic PS timeout to 200ms Arik Nemtsov
2012-02-28 12:05 ` [PATCH 1/7] wl12xx: set the ELP entry delay to the FW dyn-ps timeout Luciano Coelho
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