The use of coalescing for non-peripheral chips in the current
implementation is limited to non-existing. Disable the possibility to
set coalescing through ethtool.
Signed-off-by: Markus Schneider-Pargmann <msp@xxxxxxxxxxxx>
---
drivers/net/can/m_can/m_can.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 7c9ad9f7174e..663eb4247029 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -2182,7 +2182,7 @@ static int m_can_set_coalesce(struct net_device *dev,
return 0;
}
-static const struct ethtool_ops m_can_ethtool_ops = {
+static const struct ethtool_ops m_can_ethtool_ops_coalescing = {
.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS_IRQ |
ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ |
ETHTOOL_COALESCE_TX_USECS_IRQ |
@@ -2193,18 +2193,20 @@ static const struct ethtool_ops m_can_ethtool_ops = {
.set_coalesce = m_can_set_coalesce,
};
-static const struct ethtool_ops m_can_ethtool_ops_polling = {
+static const struct ethtool_ops m_can_ethtool_ops = {
.get_ts_info = ethtool_op_get_ts_info,
};
-static int register_m_can_dev(struct net_device *dev)
+static int register_m_can_dev(struct m_can_classdev *cdev)
{
+ struct net_device *dev = cdev->net;
+
dev->flags |= IFF_ECHO; /* we support local echo */
dev->netdev_ops = &m_can_netdev_ops;
- if (dev->irq)
- dev->ethtool_ops = &m_can_ethtool_ops;
+ if (dev->irq && cdev->is_peripheral)
+ dev->ethtool_ops = &m_can_ethtool_ops_coalescing;
else
- dev->ethtool_ops = &m_can_ethtool_ops_polling;
+ dev->ethtool_ops = &m_can_ethtool_ops;
return register_candev(dev);
}
@@ -2390,7 +2392,7 @@ int m_can_class_register(struct m_can_classdev *cdev)
if (ret)
goto rx_offload_del;
- ret = register_m_can_dev(cdev->net);
+ ret = register_m_can_dev(cdev);
if (ret) {
dev_err(cdev->dev, "registering %s failed (err=%d)\n",
cdev->net->name, ret);
--
2.45.2
