netdev - [PATCH net-next v2 4/8] dpaa2-switch: add ENDPOINT_CHANGED to the irq

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Message-Id: <20231213121411.3091597-5-ioana.ciornei@nxp.com>
Date: Wed, 13 Dec 2023 14:14:07 +0200
From: Ioana Ciornei <ioana.ciornei@....com>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	netdev@...r.kernel.org
Cc: Ioana Ciornei <ioana.ciornei@....com>
Subject: [PATCH net-next v2 4/8] dpaa2-switch: add ENDPOINT_CHANGED to the irq_mask

The blamed commit added support for MAC endpoints in the dpaa2-switch
driver but omitted to add the ENDPOINT_CHANGED irq to the list of
interrupt sources. Fix this by extending the list of events which can
raise an interrupt by extending the mask passed to the
dpsw_set_irq_mask() firmware API.

There is no user visible impact even without this patch since whenever a
switch interface is connected/disconnected from an endpoint both events
are set (LINK_CHANGED and ENDPOINT_CHANGED) and, luckily, the
LINK_CHANGED event could actually raise the interrupt and thus get the
MAC/PHY SW configuration started.

Even with this, it's better to just not rely on undocumented firmware
behavior which can change.

Fixes: 84cba72956fd ("dpaa2-switch: integrate the MAC endpoint support")
Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
Changes in v2:
- add a bit more info in the commit message

 drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
index 654dd10df307..e91ade7c7c93 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -1550,9 +1550,9 @@ static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg)

 static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev)
 {
+	u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED | DPSW_IRQ_EVENT_ENDPOINT_CHANGED;
 	struct device *dev = &sw_dev->dev;
 	struct ethsw_core *ethsw = dev_get_drvdata(dev);
-	u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED;
 	struct fsl_mc_device_irq *irq;
 	int err;

-- 
2.34.1