[PATCH v2] Bluetooth: btmtk: Fix failed to send func ctrl for MediaTek devices.

[PATCH v2] Bluetooth: btmtk: Fix failed to send func ctrl for MediaTek devices.

[Chris Lu]

Use usb_autopm_get_interface() and usb_autopm_put_interface()
in btmtk_usb_shutdown(), it could send func ctrl after enabling
autosuspend.

Bluetooth: btmtk_usb_hci_wmt_sync() hci0: Execution of wmt command
           timed out
Bluetooth: btmtk_usb_shutdown() hci0: Failed to send wmt func ctrl
           (-110)

Fixes: 5c5e8c52e3ca ("Bluetooth: btmtk: move btusb_mtk_[setup, shutdown] to btmtk.c")

Signed-off-by: Chris Lu <chris.lu@mediatek.com>
---
v2: Update commit message, add Fixes tag info
---
 drivers/bluetooth/btmtk.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index 7fd9d5ddce02..224eafc27dbe 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -1472,10 +1472,15 @@ EXPORT_SYMBOL_GPL(btmtk_usb_setup);
 
 int btmtk_usb_shutdown(struct hci_dev *hdev)
 {
+	struct btmtk_data *data = hci_get_priv(hdev);
 	struct btmtk_hci_wmt_params wmt_params;
 	u8 param = 0;
 	int err;
 
+	err = usb_autopm_get_interface(data->intf);
+	if (err < 0)
+		return err;
+
 	/* Disable the device */
 	wmt_params.op = BTMTK_WMT_FUNC_CTRL;
 	wmt_params.flag = 0;
@@ -1486,9 +1491,11 @@ int btmtk_usb_shutdown(struct hci_dev *hdev)
 	err = btmtk_usb_hci_wmt_sync(hdev, &wmt_params);
 	if (err < 0) {
 		bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
+		usb_autopm_put_interface(data->intf);
 		return err;
 	}
 
+	usb_autopm_put_interface(data->intf);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(btmtk_usb_shutdown);
-- 
2.45.2

RE: [v2] Bluetooth: btmtk: Fix failed to send func ctrl for MediaTek devices.

[bluez.test.bot]

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Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=923305

---Test result---

Test Summary:
CheckPatch                    PENDING   0.49 seconds
GitLint                       PENDING   0.31 seconds
SubjectPrefix                 PASS      0.07 seconds
BuildKernel                   PASS      24.54 seconds
CheckAllWarning               PASS      27.30 seconds
CheckSparse                   PASS      30.50 seconds
BuildKernel32                 PASS      24.49 seconds
TestRunnerSetup               PASS      438.58 seconds
TestRunner_l2cap-tester       PASS      20.68 seconds
TestRunner_iso-tester         PASS      29.61 seconds
TestRunner_bnep-tester        PASS      4.79 seconds
TestRunner_mgmt-tester        PASS      123.57 seconds
TestRunner_rfcomm-tester      PASS      7.56 seconds
TestRunner_sco-tester         PASS      9.32 seconds
TestRunner_ioctl-tester       PASS      10.93 seconds
TestRunner_mesh-tester        PASS      5.94 seconds
TestRunner_smp-tester         PASS      6.93 seconds
TestRunner_userchan-tester    PASS      4.97 seconds
IncrementalBuild              PENDING   0.78 seconds

Details
##############################
Test: CheckPatch - PENDING
Desc: Run checkpatch.pl script
Output:

##############################
Test: GitLint - PENDING
Desc: Run gitlint
Output:

##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



---
Regards,
Linux Bluetooth