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Bluetooth: btmtksdio: Fix PM runtime reference leak in shutdown

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In btmtksdio_shutdown(), pm_runtime_get_sync() is called at the
beginning of the function.  However, if sending the WMT function
control command fails later, the driver returns early.

It bypasses the corresponding pm_runtime_put_noidle() and
pm_runtime_disable() calls, leaking the PM usage counter and leaving PM
runtime enabled indefinitely.

Fall through to execute the PM runtime cleanup block even if WMT errors.

Fixes: 7f3c563c57 ("Bluetooth: btmtksdio: Add runtime PM support to SDIO based Bluetooth")
Signed-off-by: Tzung-Bi Shih <[email protected]>
Signed-off-by: Luiz Augusto von Dentz <[email protected]>
This commit is contained in:
Tzung-Bi Shih authored and Luiz Augusto von Dentz committed 2026-09-15 14:55:01 -04:00
1 parent 8879e3e0a8
commit 7b60ee5f46
1 file changed
+1 -3
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drivers/bluetooth/btmtksdio.c
+1 -3
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@@ -1262,10 +1262,8 @@ static int btmtksdio_shutdown(struct hci_dev *hdev)
wmt_params.status = NULL;
err = mtk_hci_wmt_sync(hdev, &wmt_params);
if (err < 0) {
if (err < 0)
bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
return err;
}
ignore_wmt_cmd:
pm_runtime_put_noidle(bdev->dev);