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authorBenjamin Berg2021-12-03 15:59:01 +0100
committerLuiz Augusto von Dentz2021-12-03 10:41:59 -0800
commit2250abadd3508d6961f1aa56cf8cff59f0196cb8 (patch)
tree7efa8e9fe7cc7020c723711599f5d04e4dd9867e /net
parent914b08b330d6722ed081e14580aae6fe66cd5946 (diff)
Bluetooth: hci_core: Cancel sync command if sending a frame failed
If sending a frame failed any sync command associated with it will never be completed. As such, cancel any such command immediately to avoid timing out. Signed-off-by: Benjamin Berg <bberg@redhat.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/hci_core.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index fdc0dcf8ee36..5cadecd31f66 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2906,7 +2906,7 @@ int hci_unregister_cb(struct hci_cb *cb)
}
EXPORT_SYMBOL(hci_unregister_cb);
-static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+static int hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
{
int err;
@@ -2929,14 +2929,17 @@ static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
if (!test_bit(HCI_RUNNING, &hdev->flags)) {
kfree_skb(skb);
- return;
+ return -EINVAL;
}
err = hdev->send(hdev, skb);
if (err < 0) {
bt_dev_err(hdev, "sending frame failed (%d)", err);
kfree_skb(skb);
+ return err;
}
+
+ return 0;
}
/* Send HCI command */
@@ -3843,10 +3846,15 @@ static void hci_cmd_work(struct work_struct *work)
hdev->sent_cmd = skb_clone(skb, GFP_KERNEL);
if (hdev->sent_cmd) {
+ int res;
if (hci_req_status_pend(hdev))
hci_dev_set_flag(hdev, HCI_CMD_PENDING);
atomic_dec(&hdev->cmd_cnt);
- hci_send_frame(hdev, skb);
+
+ res = hci_send_frame(hdev, skb);
+ if (res < 0)
+ hci_cmd_sync_cancel(hdev, -res);
+
if (test_bit(HCI_RESET, &hdev->flags))
cancel_delayed_work(&hdev->cmd_timer);
else