diff options
Diffstat (limited to 'drivers/net/wwan/iosm/iosm_ipc_port.c')
| -rw-r--r-- | drivers/net/wwan/iosm/iosm_ipc_port.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/net/wwan/iosm/iosm_ipc_port.c b/drivers/net/wwan/iosm/iosm_ipc_port.c index 5d5b4183e14a..2ba1ddca3945 100644 --- a/drivers/net/wwan/iosm/iosm_ipc_port.c +++ b/drivers/net/wwan/iosm/iosm_ipc_port.c @@ -3,6 +3,8 @@ * Copyright (C) 2020-21 Intel Corporation. */ +#include <linux/pm_runtime.h> + #include "iosm_ipc_chnl_cfg.h" #include "iosm_ipc_imem_ops.h" #include "iosm_ipc_port.h" @@ -13,12 +15,16 @@ static int ipc_port_ctrl_start(struct wwan_port *port) struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port); int ret = 0; + pm_runtime_get_sync(ipc_port->ipc_imem->dev); ipc_port->channel = ipc_imem_sys_port_open(ipc_port->ipc_imem, ipc_port->chl_id, IPC_HP_CDEV_OPEN); if (!ipc_port->channel) ret = -EIO; + pm_runtime_mark_last_busy(ipc_port->ipc_imem->dev); + pm_runtime_put_autosuspend(ipc_port->ipc_imem->dev); + return ret; } @@ -27,15 +33,24 @@ static void ipc_port_ctrl_stop(struct wwan_port *port) { struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port); + pm_runtime_get_sync(ipc_port->ipc_imem->dev); ipc_imem_sys_port_close(ipc_port->ipc_imem, ipc_port->channel); + pm_runtime_mark_last_busy(ipc_port->ipc_imem->dev); + pm_runtime_put_autosuspend(ipc_port->ipc_imem->dev); } /* transfer control data to modem */ static int ipc_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb) { struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port); + int ret; - return ipc_imem_sys_cdev_write(ipc_port, skb); + pm_runtime_get_sync(ipc_port->ipc_imem->dev); + ret = ipc_imem_sys_cdev_write(ipc_port, skb); + pm_runtime_mark_last_busy(ipc_port->ipc_imem->dev); + pm_runtime_put_autosuspend(ipc_port->ipc_imem->dev); + + return ret; } static const struct wwan_port_ops ipc_wwan_ctrl_ops = { |