1
linux/net/bluetooth
Roger Quadros f3784d834c Bluetooth: Ensure that HCI sysfs add/del is preempt safe
Use a different work_struct variables for add_conn() and del_conn() and
use single work queue instead of two for adding and deleting connections.

It eliminates the following error on a preemptible kernel:

[  204.358032] Unable to handle kernel NULL pointer dereference at virtual address 0000000c
[  204.370697] pgd = c0004000
[  204.373443] [0000000c] *pgd=00000000
[  204.378601] Internal error: Oops: 17 [#1] PREEMPT
[  204.383361] Modules linked in: vfat fat rfcomm sco l2cap sd_mod scsi_mod iphb pvr2d drm omaplfb ps
[  204.438537] CPU: 0    Not tainted  (2.6.28-maemo2 #1)
[  204.443664] PC is at klist_put+0x2c/0xb4
[  204.447601] LR is at klist_put+0x18/0xb4
[  204.451568] pc : [<c0270f08>]    lr : [<c0270ef4>]    psr: a0000113
[  204.451568] sp : cf1b3f10  ip : cf1b3f10  fp : cf1b3f2c
[  204.463104] r10: 00000000  r9 : 00000000  r8 : bf08029c
[  204.468353] r7 : c7869200  r6 : cfbe2690  r5 : c78692c8  r4 : 00000001
[  204.474945] r3 : 00000001  r2 : cf1b2000  r1 : 00000001  r0 : 00000000
[  204.481506] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM Segment kernel
[  204.488861] Control: 10c5387d  Table: 887fc018  DAC: 00000017
[  204.494628] Process btdelconn (pid: 515, stack limit = 0xcf1b22e0)

Signed-off-by: Roger Quadros <ext-roger.quadros@nokia.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-04-28 09:31:38 -07:00
..
bnep bluetooth: driver API update 2009-01-07 17:23:17 -08:00
cmtp Bluetooth: Remove some pointless conditionals before kfree_skb() 2009-02-27 06:14:49 +01:00
hidp Bluetooth: Enable per-module dynamic debug messages 2008-11-30 12:17:28 +01:00
rfcomm Bluetooth: Fix removing of RFCOMM DLC timer with DEFER_SETUP 2009-04-19 18:56:45 +02:00
af_bluetooth.c Bluetooth: Fix poll() misbehavior when using BT_DEFER_SETUP 2009-02-27 06:14:46 +01:00
hci_conn.c Bluetooth: Move hci_conn_del_sysfs() back to avoid device destruct too early 2009-02-27 06:14:49 +01:00
hci_core.c Bluetooth: Remove some pointless conditionals before kfree_skb() 2009-02-27 06:14:49 +01:00
hci_event.c Bluetooth: Add workaround for wrong HCI event in eSCO setup 2009-04-19 19:30:03 +02:00
hci_sock.c Bluetooth: Enable per-module dynamic debug messages 2008-11-30 12:17:28 +01:00
hci_sysfs.c Bluetooth: Ensure that HCI sysfs add/del is preempt safe 2009-04-28 09:31:38 -07:00
Kconfig
l2cap.c Bluetooth: Remove some pointless conditionals before kfree_skb() 2009-02-27 06:14:49 +01:00
lib.c
Makefile
sco.c Bluetooth: Ask upper layers for HCI disconnect reason 2009-02-27 06:14:43 +01:00