diff options
| author | Sergei Miroshnichenko <sergeimir@emcraft.com> | 2016-09-07 16:51:12 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-11-20 01:17:34 +0000 |
| commit | ca0e1ef2b995d04b3db638fd56c3b4e2223e8c8d (patch) | |
| tree | 08d410d1fba848a673b15230783481ed0f8db2b7 /include/linux/moduleloader.h | |
| parent | d1adfc596bc2de305bd9cd693d7d9fdb26449305 (diff) | |
can: dev: fix deadlock reported after bus-off
commit 9abefcb1aaa58b9d5aa40a8bb12c87d02415e4c8 upstream.
A timer was used to restart after the bus-off state, leading to a
relatively large can_restart() executed in an interrupt context,
which in turn sets up pinctrl. When this happens during system boot,
there is a high probability of grabbing the pinctrl_list_mutex,
which is locked already by the probe() of other device, making the
kernel suspect a deadlock condition [1].
To resolve this issue, the restart_timer is replaced by a delayed
work.
[1] https://github.com/victronenergy/venus/issues/24
Signed-off-by: Sergei Miroshnichenko <sergeimir@emcraft.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include/linux/moduleloader.h')
0 files changed, 0 insertions, 0 deletions