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| author | Max Chou <max.chou@realtek.com> | 2023-03-21 19:48:26 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-24 17:32:39 +0100 |
| commit | ea160ece08668a30ce69f92cc08e87da54a64a9c (patch) | |
| tree | cea8b1d13892b279415c9ca2727a425fc6f351f0 | |
| parent | f4f3cbdbf2c8e2f39944b2c8a8b03ca87064f9a5 (diff) | |
| download | linux-ea160ece08668a30ce69f92cc08e87da54a64a9c.tar.gz | |
Bluetooth: btrtl: check for NULL in btrtl_set_quirks()
[ 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>
| -rw-r--r-- | drivers/bluetooth/btrtl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 6b3755345427..88f8c604d70a 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -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, |