[PATCH 3.13 165/198] Bluetooth: Fix indicating discovery state when canceling inquiry

From: Kamal Mostafa
Date: Tue Jul 15 2014 - 17:48:11 EST -stable review patch. If anyone has any objections, please let me know.


From: Johan Hedberg <johan.hedberg@xxxxxxxxx>

commit 50143a433b70e3145bcf8a4a4e54f0c11bdee32b upstream.

When inquiry is canceled through the HCI_Cancel_Inquiry command there is
no Inquiry Complete event generated. Instead, all we get is the command
complete for the HCI_Inquiry_Cancel command. This means that we must
call the hci_discovery_set_state() function from the respective command
complete handler in order to ensure that user space knows the correct
discovery state.

Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
net/bluetooth/hci_event.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index aeda116..fa88469 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -48,6 +48,10 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
smp_mb__after_clear_bit(); /* wake_up_bit advises about this barrier */
wake_up_bit(&hdev->flags, HCI_INQUIRY);

+ hci_dev_lock(hdev);
+ hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+ hci_dev_unlock(hdev);


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