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[v1,36/49] wireless: libertas_tf: prepare for enabling irq in complete()

Message ID 1376756714-25479-37-git-send-email-ming.lei@canonical.com
State Not Applicable, archived
Delegated to: David Miller
Headers show

Commit Message

Ming Lei Aug. 17, 2013, 4:25 p.m. UTC 
Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().

Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Ming Lei <ming.lei@canonical.com>
---
 drivers/net/wireless/libertas_tf/if_usb.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/net/wireless/libertas_tf/if_usb.c b/drivers/net/wireless/libertas_tf/if_usb.c
index d576dd6..0e9e972 100644
--- a/drivers/net/wireless/libertas_tf/if_usb.c
+++ b/drivers/net/wireless/libertas_tf/if_usb.c
@@ -610,6 +610,8 @@  static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
 				      struct if_usb_card *cardp,
 				      struct lbtf_private *priv)
 {
+	unsigned long flags;
+
 	if (recvlength > LBS_CMD_BUFFER_SIZE) {
 		lbtf_deb_usbd(&cardp->udev->dev,
 			     "The receive buffer is too large\n");
@@ -619,12 +621,12 @@  static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
 
 	BUG_ON(!in_interrupt());
 
-	spin_lock(&priv->driver_lock);
+	spin_lock_irqsave(&priv->driver_lock, flags);
 	memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
 	       recvlength - MESSAGE_HEADER_LEN);
 	kfree_skb(skb);
 	lbtf_cmd_response_rx(priv);
-	spin_unlock(&priv->driver_lock);
+	spin_unlock_irqrestore(&priv->driver_lock, flags);
 }
 
 /**