[PATCH net] can: ctucanfd: handle bus error interrupts
From: Avi Weiss <hidden>
Date: 2026-07-23 07:44:09
Also in:
linux-can, lkml
Subsystem:
can network drivers, ctu can fd driver, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Pavel Pisa, Ondrej Ille, Linus Torvalds
Include REG_INT_STAT_BEI in the top-level error interrupt condition.
BEI is enabled when CAN_CTRLMODE_BERR_REPORTING is requested and
ctucan_err_interrupt() already handles it. Without checking and
clearing BEI in the top-level handler, bus error interrupts are not
handled or acknowledged.
Fixes: 2dcb8e8782d8 ("can: ctucanfd: add support for CTU CAN FD open-source IP core - bus independent part.")
Signed-off-by: Avi Weiss <redacted>
---
drivers/net/can/ctucanfd/ctucanfd_base.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/can/ctucanfd/ctucanfd_base.c b/drivers/net/can/ctucanfd/ctucanfd_base.c
index 0ea1ff28dfce..0cd2d428c1f1 100644
--- a/drivers/net/can/ctucanfd/ctucanfd_base.c
+++ b/drivers/net/can/ctucanfd/ctucanfd_base.c@@ -1136,8 +1136,12 @@ static irqreturn_t ctucan_interrupt(int irq, void *dev_id) /* Error interrupts */ if (FIELD_GET(REG_INT_STAT_EWLI, isr) || FIELD_GET(REG_INT_STAT_FCSI, isr) || - FIELD_GET(REG_INT_STAT_ALI, isr)) { - icr = isr & (REG_INT_STAT_EWLI | REG_INT_STAT_FCSI | REG_INT_STAT_ALI); + FIELD_GET(REG_INT_STAT_ALI, isr) || + FIELD_GET(REG_INT_STAT_BEI, isr)) { + icr = isr & (REG_INT_STAT_EWLI | + REG_INT_STAT_FCSI | + REG_INT_STAT_ALI | + REG_INT_STAT_BEI); ctucan_netdev_dbg(ndev, "some ERR interrupt: clearing 0x%08x\n", icr); ctucan_write32(priv, CTUCANFD_INT_STAT, icr);
--
2.43.0