4.14-stable review patch. If anyone has any objections, please let me know.
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From: Yuanjun Gong ruc_gongyuanjun@163.com
[ Upstream commit e8b5aed31355072faac8092ead4938ddec3111fd ]
in nokia_bluetooth_serdev_probe(), check the return value of clk_prepare_enable() and return the error code if clk_prepare_enable() returns an unexpected value.
Fixes: 7bb318680e86 ("Bluetooth: add nokia driver") Signed-off-by: Yuanjun Gong ruc_gongyuanjun@163.com Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/bluetooth/hci_nokia.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/hci_nokia.c b/drivers/bluetooth/hci_nokia.c index 3539fd03f47ee..474866448f181 100644 --- a/drivers/bluetooth/hci_nokia.c +++ b/drivers/bluetooth/hci_nokia.c @@ -746,7 +746,11 @@ static int nokia_bluetooth_serdev_probe(struct serdev_device *serdev) return err; }
- clk_prepare_enable(sysclk); + err = clk_prepare_enable(sysclk); + if (err) { + dev_err(dev, "could not enable sysclk: %d", err); + return err; + } btdev->sysclk_speed = clk_get_rate(sysclk); clk_disable_unprepare(sysclk);