diff options
Diffstat (limited to 'drivers/net/wwan/iosm/iosm_ipc_wwan.c')
| -rw-r--r-- | drivers/net/wwan/iosm/iosm_ipc_wwan.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/net/wwan/iosm/iosm_ipc_wwan.c b/drivers/net/wwan/iosm/iosm_ipc_wwan.c index ff747fc79aaf..93d17de08786 100644 --- a/drivers/net/wwan/iosm/iosm_ipc_wwan.c +++ b/drivers/net/wwan/iosm/iosm_ipc_wwan.c @@ -6,6 +6,7 @@ #include <linux/etherdevice.h> #include <linux/if_arp.h> #include <linux/if_link.h> +#include <linux/pm_runtime.h> #include <linux/rtnetlink.h> #include <linux/wwan.h> #include <net/pkt_sched.h> @@ -51,11 +52,13 @@ static int ipc_wwan_link_open(struct net_device *netdev) struct iosm_netdev_priv *priv = wwan_netdev_drvpriv(netdev); struct iosm_wwan *ipc_wwan = priv->ipc_wwan; int if_id = priv->if_id; + int ret = 0; if (if_id < IP_MUX_SESSION_START || if_id >= ARRAY_SIZE(ipc_wwan->sub_netlist)) return -EINVAL; + pm_runtime_get_sync(ipc_wwan->ipc_imem->dev); /* get channel id */ priv->ch_id = ipc_imem_sys_wwan_open(ipc_wwan->ipc_imem, if_id); @@ -63,7 +66,8 @@ static int ipc_wwan_link_open(struct net_device *netdev) dev_err(ipc_wwan->dev, "cannot connect wwan0 & id %d to the IPC mem layer", if_id); - return -ENODEV; + ret = -ENODEV; + goto err_out; } /* enable tx path, DL data may follow */ @@ -72,7 +76,11 @@ static int ipc_wwan_link_open(struct net_device *netdev) dev_dbg(ipc_wwan->dev, "Channel id %d allocated to if_id %d", priv->ch_id, priv->if_id); - return 0; +err_out: + pm_runtime_mark_last_busy(ipc_wwan->ipc_imem->dev); + pm_runtime_put_autosuspend(ipc_wwan->ipc_imem->dev); + + return ret; } /* Bring-down the wwan net link */ @@ -82,9 +90,12 @@ static int ipc_wwan_link_stop(struct net_device *netdev) netif_stop_queue(netdev); + pm_runtime_get_sync(priv->ipc_wwan->ipc_imem->dev); ipc_imem_sys_wwan_close(priv->ipc_wwan->ipc_imem, priv->if_id, priv->ch_id); priv->ch_id = -1; + pm_runtime_mark_last_busy(priv->ipc_wwan->ipc_imem->dev); + pm_runtime_put_autosuspend(priv->ipc_wwan->ipc_imem->dev); return 0; } @@ -106,6 +117,7 @@ static netdev_tx_t ipc_wwan_link_transmit(struct sk_buff *skb, if_id >= ARRAY_SIZE(ipc_wwan->sub_netlist)) return -EINVAL; + pm_runtime_get(ipc_wwan->ipc_imem->dev); /* Send the SKB to device for transmission */ ret = ipc_imem_sys_wwan_transmit(ipc_wwan->ipc_imem, if_id, priv->ch_id, skb); @@ -119,9 +131,14 @@ static netdev_tx_t ipc_wwan_link_transmit(struct sk_buff *skb, ret = NETDEV_TX_BUSY; dev_err(ipc_wwan->dev, "unable to push packets"); } else { + pm_runtime_mark_last_busy(ipc_wwan->ipc_imem->dev); + pm_runtime_put_autosuspend(ipc_wwan->ipc_imem->dev); goto exit; } + pm_runtime_mark_last_busy(ipc_wwan->ipc_imem->dev); + pm_runtime_put_autosuspend(ipc_wwan->ipc_imem->dev); + return ret; exit: |