This patch fix the issue: warning:variable 'passkey' is uninitialized when used here Link: https://groups.google.com/forum/#!topic/clang-built-linux/kyRKCjRsGoU Reported-by: kbuild test robot <lkp@xxxxxxxxx> Suggested-by: Marcel Holtmann <marcel@xxxxxxxxxxxx> Signed-off-by: Howard Chung <howardchung@xxxxxxxxxx> --- Changes in v3: - rephrase the commit message Changes in v2: - refactor code net/bluetooth/smp.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 50e0ac692ec4..929e0bebaf80 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -2115,7 +2115,7 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb) struct l2cap_chan *chan = conn->smp; struct smp_chan *smp = chan->data; struct hci_conn *hcon = conn->hcon; - u8 *pkax, *pkbx, *na, *nb; + u8 *pkax, *pkbx, *na, *nb, confirm_hint; u32 passkey; int err; @@ -2179,13 +2179,12 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb) */ if (hci_find_ltk(hcon->hdev, &hcon->dst, hcon->dst_type, hcon->role)) { - err = mgmt_user_confirm_request(hcon->hdev, &hcon->dst, - hcon->type, - hcon->dst_type, - passkey, 1); - if (err) - return SMP_UNSPECIFIED; - set_bit(SMP_FLAG_WAIT_USER, &smp->flags); + /* Set passkey to 0. The value can be any number since + * it'll be ignored anyway. + */ + passkey = 0; + confirm_hint = 1; + goto confirm; } } @@ -2206,9 +2205,11 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb) err = smp_g2(smp->tfm_cmac, pkax, pkbx, na, nb, &passkey); if (err) return SMP_UNSPECIFIED; + confirm_hint = 0; +confirm: err = mgmt_user_confirm_request(hcon->hdev, &hcon->dst, hcon->type, - hcon->dst_type, passkey, 0); + hcon->dst_type, passkey, confirm_hint); if (err) return SMP_UNSPECIFIED; -- 2.25.0.265.gbab2e86ba0-goog
