can: m_can: Disable unused interrupts

There are a number of interrupts that are not used by the driver at the
moment. Disable all of these.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/all/20230315110546.2518305-5-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 5274d96425665bac568c9bd31daf37ce8471860f..e7aceeba3759a77959a028eb252207df844c1a39 100644 (file)
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -1261,6 +1261,7 @@ static int m_can_set_bittiming(struct net_device *dev)
 static int m_can_chip_config(struct net_device *dev)
 {
        struct m_can_classdev *cdev = netdev_priv(dev);
+       u32 interrupts = IR_ALL_INT;
        u32 cccr, test;
        int err;
 
@@ -1270,6 +1271,11 @@ static int m_can_chip_config(struct net_device *dev)
                return err;
        }
 
+       /* Disable unused interrupts */
+       interrupts &= ~(IR_ARA | IR_ELO | IR_DRX | IR_TEFF | IR_TEFW | IR_TFE |
+                       IR_TCF | IR_HPM | IR_RF1F | IR_RF1W | IR_RF1N |
+                       IR_RF0F | IR_RF0W);
+
        m_can_config_endisable(cdev, true);
 
        /* RX Buffer/FIFO Element Size 64 bytes data field */
@@ -1364,15 +1370,13 @@ static int m_can_chip_config(struct net_device *dev)
        m_can_write(cdev, M_CAN_TEST, test);
 
        /* Enable interrupts */
-       if (!(cdev->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING))
+       if (!(cdev->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)) {
                if (cdev->version == 30)
-                       m_can_write(cdev, M_CAN_IE, IR_ALL_INT &
-                                   ~(IR_ERR_LEC_30X));
+                       interrupts &= ~(IR_ERR_LEC_30X);
                else
-                       m_can_write(cdev, M_CAN_IE, IR_ALL_INT &
-                                   ~(IR_ERR_LEC_31X));
-       else
-               m_can_write(cdev, M_CAN_IE, IR_ALL_INT);
+                       interrupts &= ~(IR_ERR_LEC_31X);
+       }
+       m_can_write(cdev, M_CAN_IE, interrupts);
 
        /* route all interrupts to INT0 */
        m_can_write(cdev, M_CAN_ILS, ILS_ALL_INT0);