[PATCH net 3/3] net: hns: fixed set-coalesce-usecs return void bug

[Lisheng]

Seting coalesce time maybe return err,
and ethtool should process the err.

Signed-off-by: Lisheng <lisheng...@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hnae.h         | 2 +-
 drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c | 6 +++---
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c  | 6 ++++--
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h 
b/drivers/net/ethernet/hisilicon/hns/hnae.h
index 1cbcb9f..f622899 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.h
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.h
@@ -467,7 +467,7 @@ struct hnae_ae_ops {
                                   u32 *tx_usecs, u32 *rx_usecs);
        void (*get_rx_max_coalesced_frames)(struct hnae_handle *handle,
                                            u32 *tx_frames, u32 *rx_frames);
-       void (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout);
+       int (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout);
        int (*set_coalesce_frames)(struct hnae_handle *handle,
                                   u32 coalesce_frames);
        void (*set_promisc_mode)(struct hnae_handle *handle, u32 en);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c 
b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
index 4d657f5..487d6e2 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
@@ -465,13 +465,13 @@ static void hns_ae_get_rx_max_coalesced_frames(struct 
hnae_handle *handle,
                                                  ring_pair->port_id_in_comm);
 }
 
-static void hns_ae_set_coalesce_usecs(struct hnae_handle *handle,
-                                     u32 timeout)
+static int hns_ae_set_coalesce_usecs(struct hnae_handle *handle,
+                                    u32 timeout)
 {
        struct ring_pair_cb *ring_pair =
                container_of(handle->qs[0], struct ring_pair_cb, q);
 
-       (void)hns_rcb_set_coalesce_usecs(
+       return hns_rcb_set_coalesce_usecs(
                ring_pair->rcb_common, ring_pair->port_id_in_comm, timeout);
 }
 
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c 
b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 3df2284..4086e91 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -781,8 +781,10 @@ static int hns_set_coalesce(struct net_device *net_dev,
            (!ops->set_coalesce_frames))
                return -ESRCH;
 
-       ops->set_coalesce_usecs(priv->ae_handle,
-                                       ec->rx_coalesce_usecs);
+       ret = ops->set_coalesce_usecs(priv->ae_handle,
+                                     ec->rx_coalesce_usecs);
+       if (ret)
+               return ret;
 
        ret = ops->set_coalesce_frames(
                priv->ae_handle,
-- 
1.9.1