From 897e663218e2d05607a6f5b258134cb026a2fa85 Mon Sep 17 00:00:00 2001 From: Markus Schneider-Pargmann Date: Wed, 15 Mar 2023 12:05:34 +0100 Subject: [PATCH] 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 Reviewed-by: Simon Horman Link: https://lore.kernel.org/all/20230315110546.2518305-5-msp@baylibre.com Signed-off-by: Marc Kleine-Budde --- 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 5274d9642566..e7aceeba3759 100644 --- 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); -- 2.34.1