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Subject[PATCH v2 06/18] can: m_can: Disable unused interrupts
Date
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>
---
drivers/net/can/m_can/m_can.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index a668a5836cf8..ef5ca5d37b0d 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -1262,6 +1262,7 @@ static int m_can_chip_config(struct net_device *dev)
{
struct m_can_classdev *cdev = netdev_priv(dev);
u32 cccr, test;
+ u32 interrupts = IR_ALL_INT;
int err;

err = m_can_init_ram(cdev);
@@ -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);
--
2.39.0
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