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Bluetooth: Add paranoid check for existing LE and BR/EDR SMP channels 

When the SMP channels have been already registered, then print out a
clear WARN_ON message that something went wrong. Also unregister the
existing channels in this case before trying to register new ones.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2015-01-15 08:04:21 -08:00 committed by Johan Hedberg
parent 327a71910c
commit 2b8df32395
1 changed files with 12 additions and 0 deletions
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12
net/bluetooth/smp.c
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@ -3072,6 +3072,12 @@ int smp_register(struct hci_dev *hdev)
if (!lmp_le_capable(hdev))
return 0;
if (WARN_ON(hdev->smp_data)) {
chan = hdev->smp_data;
hdev->smp_data = NULL;
smp_del_chan(chan);
}
chan = smp_add_cid(hdev, L2CAP_CID_SMP);
if (IS_ERR(chan))
return PTR_ERR(chan);
@ -3091,6 +3097,12 @@ int smp_register(struct hci_dev *hdev)
return 0;
}
if (WARN_ON(hdev->smp_bredr_data)) {
chan = hdev->smp_bredr_data;
hdev->smp_bredr_data = NULL;
smp_del_chan(chan);
}
chan = smp_add_cid(hdev, L2CAP_CID_SMP_BREDR);
if (IS_ERR(chan)) {
int err = PTR_ERR(chan);