From ad2302345d59d29232cb668baaae9e840925d153 Mon Sep 17 00:00:00 2001 From: "ZHU Yi (ST-FIR/ENG1-Zhu)" Date: Fri, 15 Sep 2017 06:59:15 +0000 Subject: [PATCH] can: flexcan: fix state transition regression Update state upon any interrupt to report correct state transitions in case the flexcan core enabled the broken error state quirk fix. Signed-off-by: Zhu Yi Signed-off-by: Mark Jonas Acked-by: Wolfgang Grandegger Cc: linux-stable # >= v4.11 Signed-off-by: Marc Kleine-Budde --- drivers/net/can/flexcan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 13f0f219d8aa..df4bfb83024c 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -765,8 +765,9 @@ static irqreturn_t flexcan_irq(int irq, void *dev_id) flexcan_write(reg_esr & FLEXCAN_ESR_ALL_INT, ®s->esr); } - /* state change interrupt */ - if (reg_esr & FLEXCAN_ESR_ERR_STATE) + /* state change interrupt or broken error state quirk fix is enabled */ + if ((reg_esr & FLEXCAN_ESR_ERR_STATE) || + (priv->devtype_data->quirks & FLEXCAN_QUIRK_BROKEN_ERR_STATE)) flexcan_irq_state(dev, reg_esr); /* bus error IRQ - handle if bus error reporting is activated */ -- 2.30.2