2017-10-17 13:53:49

by Konrad Zapalowicz

Subject: [PATCH] bluetooth: increase timeout for le auto connections

From: Konrad Zapałowicz <[email protected]>

This patch increases the connection timeout for LE connections that are
triggered by the advertising report to 4 seconds.

It has been observed that devices equipped with wifi+bt combo SoC fail
to create a connection with BLE devices due to their coexistence issues.
Increasing this timeout gives them enough time to complete the
connection with success.

Signed-off-by: Konrad Zapałowicz <[email protected]>
---
include/net/bluetooth/hci.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index fe98f0a..1668211 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -273,7 +273,7 @@ enum {
#define HCI_AUTO_OFF_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
#define HCI_POWER_OFF_TIMEOUT msecs_to_jiffies(5000) /* 5 seconds */
#define HCI_LE_CONN_TIMEOUT msecs_to_jiffies(20000) /* 20 seconds */
-#define HCI_LE_AUTOCONN_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
+#define HCI_LE_AUTOCONN_TIMEOUT msecs_to_jiffies(4000) /* 4 seconds */

/* HCI data types */
#define HCI_COMMAND_PKT 0x01
--
2.7.4

2017-10-29 13:11:06

by Marcel Holtmann

Subject: Re: [PATCH] bluetooth: increase timeout for le auto connections

Hi Konrad,

> This patch increases the connection timeout for LE connections that are
> triggered by the advertising report to 4 seconds.
>
> It has been observed that devices equipped with wifi+bt combo SoC fail
> to create a connection with BLE devices due to their coexistence issues.
> Increasing this timeout gives them enough time to complete the
> connection with success.
>
> Signed-off-by: Konrad Zapałowicz <[email protected]>
> ---
> include/net/bluetooth/hci.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel