From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
In preparation for unduplicating the hci_uart registration code,
schedule a devres action for disabling the SUSCLK rather than doing it
manually.
We cannot really use devm_clk_get_enabled() as we also set the rate
before enabling the clock. While this should in theory work, I don't
want to risk breaking existing users. One solution for the future is to
add devm_clk_get_enabled_with_rate() to the clock framework.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
---
drivers/bluetooth/hci_qca.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index bc6a49ba26f9..a34c663e337c 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -2295,6 +2295,13 @@ static int qca_init_regulators(struct qca_power *qca,
return 0;
}
+static void qca_clk_disable_unprepare(void *data)
+{
+ struct clk *clk = data;
+
+ clk_disable_unprepare(clk);
+}
+
static int qca_serdev_probe(struct serdev_device *serdev)
{
struct qca_serdev *qcadev;
@@ -2434,10 +2441,15 @@ static int qca_serdev_probe(struct serdev_device *serdev)
if (err)
return err;
+ err = devm_add_action_or_reset(&serdev->dev,
+ qca_clk_disable_unprepare,
+ qcadev->susclk);
+ if (err)
+ return err;
+
err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
if (err) {
BT_ERR("Rome serdev registration failed");
- clk_disable_unprepare(qcadev->susclk);
return err;
}
}
@@ -2477,15 +2489,9 @@ static void qca_serdev_remove(struct serdev_device *serdev)
case QCA_WCN6750:
case QCA_WCN6855:
case QCA_WCN7850:
- if (power->vregs_on) {
+ if (power->vregs_on)
qca_power_shutdown(&qcadev->serdev_hu);
- break;
- }
- fallthrough;
-
default:
- if (qcadev->susclk)
- clk_disable_unprepare(qcadev->susclk);
}
hci_uart_unregister_device(&qcadev->serdev_hu);
--
2.43.0
