| commit | bf88a20611d5a62119a02da4eba95b461ec692c8 | [log] [tgz] |
|---|---|---|
| author | Thomas Gleixner <tglx@linutronix.de> | Tue Mar 18 17:19:12 2014 +0000 |
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | Tue Apr 01 11:55:00 2014 +0200 |
| tree | f1ee16ea5621c98799fdf17f5b102474a77b4e8e | |
| parent | 710c56105dfd10e32a89086cf78cc1c8433f6a7a [diff] |
can: c_can: Provide protection in the xmit path
The network core does not serialize the access to the hardware. The
xmit related code lets the following happen:
CPU0 CPU1
interrupt()
do_poll()
c_can_do_tx()
Fiddle with HW and xmit()
internal data Fiddle with HW and
internal data
due the complete lack of serialization.
Add proper locking.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>