This is a note to let you know that I've just added the patch titled
Bluetooth: hci_uart_set_flow_control: Fix NULL deref when using serdev
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-hci_uart_set_flow_control-fix-null-deref-when-using-serdev.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Dec 20 18:17:52 CET 2017
From: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Wed, 4 Oct 2017 20:43:35 +0200
Subject: Bluetooth: hci_uart_set_flow_control: Fix NULL deref when using serdev
From: Hans de Goede <hdegoede@xxxxxxxxxx>
[ Upstream commit 7841d554809b518a22349e7e39b6b63f8a48d0fb ]
Fix a NULL pointer deref (hu->tty) when calling hci_uart_set_flow_control
on hci_uart-s using serdev.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/bluetooth/hci_ldisc.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -41,6 +41,7 @@
#include <linux/ioctl.h>
#include <linux/skbuff.h>
#include <linux/firmware.h>
+#include <linux/serdev.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@@ -298,6 +299,12 @@ void hci_uart_set_flow_control(struct hc
unsigned int set = 0;
unsigned int clear = 0;
+ if (hu->serdev) {
+ serdev_device_set_flow_control(hu->serdev, !enable);
+ serdev_device_set_rts(hu->serdev, !enable);
+ return;
+ }
+
if (enable) {
/* Disable hardware flow control */
ktermios = tty->termios;
Patches currently in stable-queue which might be from hdegoede@xxxxxxxxxx are
queue-4.14/bluetooth-hci_uart_set_flow_control-fix-null-deref-when-using-serdev.patch
queue-4.14/bluetooth-hci_bcm-fix-setting-of-irq-trigger-type.patch