This is a note to let you know that I've just added the patch titled
Bluetooth: Add default wakeup callback for HCI UART driver
to the 5.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-add-default-wakeup-callback-for-hci-uart-d.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6533b5e0fc17e1d4fe8310f64846c61ae317220f
Author: Ying Hsu <yinghsu@xxxxxxxxxxxx>
Date: Mon Jul 4 18:33:24 2022 +0800
Bluetooth: Add default wakeup callback for HCI UART driver
[ Upstream commit bee5395ced44c5a312348557eb2dfb0c2a7bfaa2 ]
Bluetooth HCI devices indicate if they are able to wakeup in the wakeup
callback since 'commit 4539ca67fe8e ("Bluetooth: Rename driver
.prevent_wake to .wakeup")'. This patch adds a default wakeup callback
for Bluetooth HCI UAR devices. It assumes Bluetooth HCI UART devices are
wakeable for backward compatibility. For those who need a customized
behavior, one can override it before calling hci_uart_register_device().
Fixes: 4539ca67fe8e ("Bluetooth: Rename driver .prevent_wake to .wakeup")
Signed-off-by: Ying Hsu <yinghsu@xxxxxxxxxxxx>
Reviewed-by: Alain Michaud <alainm@xxxxxxxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/bluetooth/hci_serdev.c b/drivers/bluetooth/hci_serdev.c
index 4cda890ce647..c0e5f42ec6b7 100644
--- a/drivers/bluetooth/hci_serdev.c
+++ b/drivers/bluetooth/hci_serdev.c
@@ -231,6 +231,15 @@ static int hci_uart_setup(struct hci_dev *hdev)
return 0;
}
+/* Check if the device is wakeable */
+static bool hci_uart_wakeup(struct hci_dev *hdev)
+{
+ /* HCI UART devices are assumed to be wakeable by default.
+ * Implement wakeup callback to override this behavior.
+ */
+ return true;
+}
+
/** hci_uart_write_wakeup - transmit buffer wakeup
* @serdev: serial device
*
@@ -342,6 +351,8 @@ int hci_uart_register_device(struct hci_uart *hu,
hdev->flush = hci_uart_flush;
hdev->send = hci_uart_send_frame;
hdev->setup = hci_uart_setup;
+ if (!hdev->wakeup)
+ hdev->wakeup = hci_uart_wakeup;
SET_HCIDEV_DEV(hdev, &hu->serdev->dev);
if (test_bit(HCI_UART_NO_SUSPEND_NOTIFIER, &hu->flags))
