[PATCH 2/4] Bluetooth: Add new hci_tx_error function

[Benjamin Berg <benjamin@sipsolutions.net>]

From: Benjamin Berg <bberg@redhat.com>

Currently this function only cancels any synchronous operation that
might be ongoing. Adding this function allows aborting synchronous
commands in case of low level TX/RX issues. A common example for this is
that the device has been removed.

Signed-off-by: Benjamin Berg <bberg@redhat.com>
---
 include/net/bluetooth/hci_core.h | 1 +
 net/bluetooth/hci_core.c         | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index dd8840e70e25..542f5a37b9d0 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1267,6 +1267,7 @@ void hci_release_dev(struct hci_dev *hdev);
 int hci_suspend_dev(struct hci_dev *hdev);
 int hci_resume_dev(struct hci_dev *hdev);
 int hci_reset_dev(struct hci_dev *hdev);
+void hci_tx_error(struct hci_dev *hdev, int err);
 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 8d33aa64846b..bbb35188e41f 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -4069,6 +4069,13 @@ int hci_reset_dev(struct hci_dev *hdev)
 }
 EXPORT_SYMBOL(hci_reset_dev);
 
+/* Reset HCI device */
+void hci_tx_error(struct hci_dev *hdev, int err)
+{
+	hci_req_sync_cancel(hdev, err);
+}
+EXPORT_SYMBOL(hci_tx_error);
+
 /* Receive frame from HCI drivers */
 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
-- 
2.31.1