[PATCH] Bluetooth: btmtkuart: add missed functions in the error paths of btmtuart_probe()
From: Chuhong Yuan <hidden>
Date: 2020-05-28 10:22:07
Also in:
linux-bluetooth, linux-mediatek, lkml
Subsystem:
bluetooth drivers, mediatek bluetooth driver, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Sean Wang, Linus Torvalds
btmtuart_probe() misses several function calls in its error paths, including hci_free_dev() and clk_disable_unprepare(). Refactor the code and call correct undo functions to fix the error paths. Signed-off-by: Chuhong Yuan <redacted> --- 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
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