Complete() will be run with interrupt enabled, so change to
read_lock_irqsave().
Cc: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx>
Cc: Johan Hedberg <johan.hedberg@xxxxxxxxx>
Cc: linux-bluetooth@xxxxxxxxxxxxxxx
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
---
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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