From: Max Chou max.chou@realtek.com
[ Upstream commit 253cf30e8d3d001850a95c4729d668f916b037ab ]
The btrtl_set_quirks() has accessed btrtl_dev->ic_info->lmp_subver since b8e482d02513. However, if installing a Realtek Bluetooth controller without the driver supported, it will hit the NULL point accessed.
Add a check for NULL to avoid the Kernel Oops.
Signed-off-by: Max Chou max.chou@realtek.com Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/bluetooth/btrtl.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 44b672cca69ee..7061621faeb0c 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -889,6 +889,9 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev) break; }
+ if (!btrtl_dev->ic_info) + return; + switch (btrtl_dev->ic_info->lmp_subver) { case RTL_ROM_LMP_8703B: /* 8723CS reports two pages for local ext features,