2020-05-29 02:28:39

by Chuhong Yuan

Subject: [PATCH v2] Bluetooth: btmtkuart: Improve exception handling in btmtuart_probe()

Calls of the functions clk_disable_unprepare() and hci_free_dev()
were missing for the exception handling.
Thus add the missed function calls together with corresponding
jump targets.

Fixes: 055825614c6b ("Bluetooth: btmtkuart: add an implementation for clock osc property")
Signed-off-by: Chuhong Yuan <[email protected]>
---
Changes in v2:
- Modify description.
- Add fixes tag.

drivers/bluetooth/btmtkuart.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/bluetooth/btmtkuart.c b/drivers/bluetooth/btmtkuart.c
index e11169ad8247..8a81fbca5c9d 100644
--- a/drivers/bluetooth/btmtkuart.c
+++ b/drivers/bluetooth/btmtkuart.c
@@ -1015,7 +1015,7 @@ static int btmtkuart_probe(struct serdev_device *serdev)
if (btmtkuart_is_standalone(bdev)) {
err = clk_prepare_enable(bdev->osc);
if (err < 0)
- return err;
+ goto err_hci_free_dev;

if (bdev->boot) {
gpiod_set_value_cansleep(bdev->boot, 1);
@@ -1028,10 +1028,8 @@ static int btmtkuart_probe(struct serdev_device *serdev)

/* Power on */
err = regulator_enable(bdev->vcc);
- if (err < 0) {
- clk_disable_unprepare(bdev->osc);
- return err;
- }
+ if (err < 0)
+ goto err_clk_disable_unprepare;

/* Reset if the reset-gpios is available otherwise the board
* -level design should be guaranteed.
@@ -1063,7 +1061,6 @@ static int btmtkuart_probe(struct serdev_device *serdev)
err = hci_register_dev(hdev);
if (err < 0) {
dev_err(&serdev->dev, "Can't register HCI device\n");
- hci_free_dev(hdev);
goto err_regulator_disable;
}

@@ -1072,6 +1069,11 @@ static int btmtkuart_probe(struct serdev_device *serdev)
err_regulator_disable:
if (btmtkuart_is_standalone(bdev))
regulator_disable(bdev->vcc);
+err_clk_disable_unprepare:
+ if (btmtkuart_is_standalone(bdev))
+ clk_disable_unprepare(bdev->osc);
+err_hci_free_dev:
+ hci_free_dev(hdev);

return err;
}
--
2.26.2

2020-05-29 11:43:32

by Marcel Holtmann

Subject: Re: [PATCH v2] Bluetooth: btmtkuart: Improve exception handling in btmtuart_probe()

Hi Chuhong,

> Calls of the functions clk_disable_unprepare() and hci_free_dev()
> were missing for the exception handling.
> Thus add the missed function calls together with corresponding
> jump targets.
>
> Fixes: 055825614c6b ("Bluetooth: btmtkuart: add an implementation for clock osc property")
> Signed-off-by: Chuhong Yuan <[email protected]>
> ---
> Changes in v2:
> - Modify description.
> - Add fixes tag.
>
> drivers/bluetooth/btmtkuart.c | 14 ++++++++------
> 1 file changed, 8 insertions(+), 6 deletions(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel