From 99383749c25954c23c87e1592f6b49b216e0a2e2 Mon Sep 17 00:00:00 2001
From: Jeroen Hofstee <jhofstee@victronenergy.com>
Date: Tue, 24 Sep 2019 18:45:49 +0000
Subject: [PATCH] can: ti_hecc: release the mailbox a bit earlier
Release the mailbox after reading it, so it can be reused a bit earlier.
Since "can: rx-offload: continue on error" all pending message bits are
cleared directly, so remove clearing them in ti_hecc.
Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Jeroen Hofstee <jhofstee@victronenergy.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
drivers/net/can/ti_hecc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index d6a84f8ff863d..6ea29126c60be 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -530,8 +530,9 @@ static unsigned int ti_hecc_mailbox_read(struct can_rx_offload *offload,
u32 *timestamp, unsigned int mbxno)
{
struct ti_hecc_priv *priv = rx_offload_to_priv(offload);
- u32 data;
+ u32 data, mbx_mask;
+ mbx_mask = BIT(mbxno);
data = hecc_read_mbx(priv, mbxno, HECC_CANMID);
if (data & HECC_CANMID_IDE)
cf->can_id = (data & CAN_EFF_MASK) | CAN_EFF_FLAG;
@@ -551,6 +552,7 @@ static unsigned int ti_hecc_mailbox_read(struct can_rx_offload *offload,
}
*timestamp = hecc_read_stamp(priv, mbxno);
+ hecc_write(priv, HECC_CANRMP, mbx_mask);
return 1;
}
@@ -701,7 +703,6 @@ static irqreturn_t ti_hecc_interrupt(int irq, void *dev_id)
while ((rx_pending = hecc_read(priv, HECC_CANRMP))) {
can_rx_offload_irq_offload_timestamp(&priv->offload,
rx_pending);
- hecc_write(priv, HECC_CANRMP, rx_pending);
}
}
--
2.30.2