can: c_can: fix segfault during rmmod

This patch fixes an oops which occurs during unloading the driver.
unregister_c_can_dev() is doing c_can/d_can module interrupts disable, which
requires module clock enable. c_can/d_can interrupts enable/disable is handled
properly in c_can_start and c_can_stop, so removing from
unregister_c_can_dev().

The problem was triggered by adding runtime PM support to the c_can driver by
this commit:

4cdd34b can: c_can: Add runtime PM support to Bosch C_CAN/D_CAN controller

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 2c4a21f98442..e5180dfddba5 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -1265,9 +1265,6 @@ void unregister_c_can_dev(struct net_device *dev)
 {
         struct c_can_priv *priv = netdev_priv(dev);
 
-        /* disable all interrupts */
-        c_can_enable_all_interrupts(priv, DISABLE_ALL_INTERRUPTS);
-
         unregister_candev(dev);
 
         c_can_pm_runtime_disable(priv);