From: Luiz Augusto von Dentz luiz.von.dentz@intel.com
[ Upstream commit 6012b9346d8959194c239fd60a62dfec98d43048 ]
Instances may have flags set as part of its data in which case the code should not attempt to add it again otherwise it can cause duplication:
< HCI Command: LE Set Extended Advertising Data (0x08|0x0037) plen 35 Handle: 0x00 Operation: Complete extended advertising data (0x03) Fragment preference: Minimize fragmentation (0x01) Data length: 0x06 Flags: 0x04 BR/EDR Not Supported Flags: 0x06 LE General Discoverable Mode BR/EDR Not Supported
Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Johan Hedberg johan.hedberg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/bluetooth/hci_request.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index 1015d9c8d97d..4a89e121d662 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -1093,6 +1093,14 @@ static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
instance_flags = get_adv_instance_flags(hdev, instance);
+ /* If instance already has the flags set skip adding it once + * again. + */ + if (adv_instance && eir_get_data(adv_instance->adv_data, + adv_instance->adv_data_len, EIR_FLAGS, + NULL)) + goto skip_flags; + /* The Add Advertising command allows userspace to set both the general * and limited discoverable flags. */ @@ -1125,6 +1133,7 @@ static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr) } }
+skip_flags: if (adv_instance) { memcpy(ptr, adv_instance->adv_data, adv_instance->adv_data_len);