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Commit 0b0e32b7 authored by Arik Nemtsov's avatar Arik Nemtsov Committed by Luciano Coelho
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wl12xx: change bits in the link_map under spin lock 



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: default avatarArik Nemtsov <arik@wizery.com>
Signed-off-by: default avatarLuciano Coelho <coelho@ti.com>
parent 5af70c86

drivers/net/wireless/wl12xx/cmd.c

+9 −0
Original line number Diff line number Diff line
@@ -459,23 +459,32 @@ int wl12xx_cmd_role_disable(struct wl1271 *wl, u8 *role_id) 


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;

}