[lkml]   [2019]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH AUTOSEL 5.4 119/350] Bluetooth: missed cpu_to_le16 conversion in hci_init4_req
From: "Ben Dooks (Codethink)" <>

[ Upstream commit 727ea61a5028f8ac96f75ab34cb1b56e63fd9227 ]

It looks like in hci_init4_req() the request is being
initialised from cpu-endian data but the packet is specified
to be little-endian. This causes an warning from sparse due
to __le16 to u16 conversion.

Fix this by using cpu_to_le16() on the two fields in the packet.

net/bluetooth/hci_core.c:845:27: warning: incorrect type in assignment (different base types)
net/bluetooth/hci_core.c:845:27: expected restricted __le16 [usertype] tx_len
net/bluetooth/hci_core.c:845:27: got unsigned short [usertype] le_max_tx_len
net/bluetooth/hci_core.c:846:28: warning: incorrect type in assignment (different base types)
net/bluetooth/hci_core.c:846:28: expected restricted __le16 [usertype] tx_time
net/bluetooth/hci_core.c:846:28: got unsigned short [usertype] le_max_tx_time

Signed-off-by: Ben Dooks <>
Signed-off-by: Marcel Holtmann <>
Signed-off-by: Sasha Levin <>
net/bluetooth/hci_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 04bc79359a173..b2559d4bed815 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -842,8 +842,8 @@ static int hci_init4_req(struct hci_request *req, unsigned long opt)
if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) {
struct hci_cp_le_write_def_data_len cp;

- cp.tx_len = hdev->le_max_tx_len;
- cp.tx_time = hdev->le_max_tx_time;
+ cp.tx_len = cpu_to_le16(hdev->le_max_tx_len);
+ cp.tx_time = cpu_to_le16(hdev->le_max_tx_time);
hci_req_add(req, HCI_OP_LE_WRITE_DEF_DATA_LEN, sizeof(cp), &cp);

 \ /
  Last update: 2019-12-10 22:09    [W:1.175 / U:0.288 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site