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Bluetooth: btrtl: check for NULL in btrtl_set_quirks()

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[ Upstream commit 253cf30e8d ]

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>
This commit is contained in:
Max Chou 2023-03-21 19:48:26 +08:00 committed by Greg Kroah-Hartman
parent f4f3cbdbf2
commit ea160ece08
1 changed files with 3 additions and 0 deletions
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3
drivers/bluetooth/btrtl.c
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@ -882,6 +882,9 @@ 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,