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* [PATCH v2] Bluetooth: Fix return value in hci_dev_do_close()
@ 2021-08-17  6:29 Kangmin Park
  0 siblings, 0 replies; only message in thread
From: Kangmin Park @ 2021-08-17  6:29 UTC (permalink / raw)
  To: Marcel Holtmann
  Cc: Johan Hedberg, Luiz Augusto von Dentz, David S. Miller,
	Jakub Kicinski, Tedd Ho-Jeong An, linux-bluetooth, netdev,
	linux-kernel

hci_error_reset() return without calling hci_dev_do_open() when
hci_dev_do_close() return error value which is not 0.

Also, hci_dev_close() return hci_dev_do_close() function's return
value.

But, hci_dev_do_close() return always 0 even if hdev->shutdown
return error value. So, fix hci_dev_do_close() to save and return
the return value of the hdev->shutdown when it is called.

Signed-off-by: Kangmin Park <l4stpr0gr4m@gmail.com>
---
 net/bluetooth/hci_core.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index b0d9c36acc03..fa5f23df4fc3 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1711,6 +1711,7 @@ static void hci_pend_le_actions_clear(struct hci_dev *hdev)
 int hci_dev_do_close(struct hci_dev *hdev)
 {
 	bool auto_off;
+	int ret = 0;
 
 	BT_DBG("%s %p", hdev->name, hdev);
 
@@ -1719,7 +1720,7 @@ int hci_dev_do_close(struct hci_dev *hdev)
 	    test_bit(HCI_UP, &hdev->flags)) {
 		/* Execute vendor specific shutdown routine */
 		if (hdev->shutdown)
-			hdev->shutdown(hdev);
+			ret = hdev->shutdown(hdev);
 	}
 
 	cancel_delayed_work(&hdev->power_off);
@@ -1730,7 +1731,7 @@ int hci_dev_do_close(struct hci_dev *hdev)
 	if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
 		cancel_delayed_work_sync(&hdev->cmd_timer);
 		hci_req_sync_unlock(hdev);
-		return 0;
+		return ret;
 	}
 
 	hci_leds_update_powered(hdev, false);
@@ -1836,7 +1837,7 @@ int hci_dev_do_close(struct hci_dev *hdev)
 	hci_req_sync_unlock(hdev);
 
 	hci_dev_put(hdev);
-	return 0;
+	return ret;
 }
 
 int hci_dev_close(__u16 dev)
-- 
2.26.2


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