[PATCH v1 25/49] BT: bfusb: prepare for enabling irq in complete()

[Ming Lei]

Complete() will be run with interrupt enabled, so change to
read_lock_irqsave().

Cc: Marcel Holtmann <mar...@holtmann.org>
Cc: Gustavo Padovan <gust...@padovan.org>
Cc: Johan Hedberg <johan.hedb...@gmail.com>
Cc: linux-blueto...@vger.kernel.org
Signed-off-by: Ming Lei <ming....@canonical.com>
---
 drivers/bluetooth/bfusb.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
index 995aee9..2e93501 100644
--- a/drivers/bluetooth/bfusb.c
+++ b/drivers/bluetooth/bfusb.c
@@ -186,6 +186,7 @@ static void bfusb_tx_complete(struct urb *urb)
 {
        struct sk_buff *skb = (struct sk_buff *) urb->context;
        struct bfusb_data *data = (struct bfusb_data *) skb->dev;
+       unsigned long flags;
 
        BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
 
@@ -199,14 +200,14 @@ static void bfusb_tx_complete(struct urb *urb)
        else
                data->hdev->stat.err_tx++;
 
-       read_lock(&data->lock);
+       read_lock_irqsave(&data->lock, flags);
 
        skb_unlink(skb, &data->pending_q);
        skb_queue_tail(&data->completed_q, skb);
 
        bfusb_tx_wakeup(data);
 
-       read_unlock(&data->lock);
+       read_unlock_irqrestore(&data->lock, flags);
 }
 
 
@@ -347,10 +348,11 @@ static void bfusb_rx_complete(struct urb *urb)
        unsigned char *buf = urb->transfer_buffer;
        int count = urb->actual_length;
        int err, hdr, len;
+       unsigned long flags;
 
        BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
 
-       read_lock(&data->lock);
+       read_lock_irqsave(&data->lock, flags);
 
        if (!test_bit(HCI_RUNNING, &data->hdev->flags))
                goto unlock;
@@ -392,7 +394,7 @@ static void bfusb_rx_complete(struct urb *urb)
 
        bfusb_rx_submit(data, urb);
 
-       read_unlock(&data->lock);
+       read_unlock_irqrestore(&data->lock, flags);
 
        return;
 
@@ -406,7 +408,7 @@ resubmit:
        }
 
 unlock:
-       read_unlock(&data->lock);
+       read_unlock_irqrestore(&data->lock, flags);
 }
 
 static int bfusb_open(struct hci_dev *hdev)
-- 
1.7.9.5

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