[PATCH net-next v2 1/2] r8152: split rtl8152_resume function

[Hayes Wang]

Split rtl8152_resume() into rtl8152_runtime_resume() and
rtl8152_system_resume().

Besides, replace GFP_KERNEL with GFP_NOIO for usb_submit_urb().

Signed-off-by: Hayes Wang <hayesw...@realtek.com>
---
 drivers/net/usb/r8152.c | 99 ++++++++++++++++++++++++++++++-------------------
 1 file changed, 61 insertions(+), 38 deletions(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 5a02053..2d238b5 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -3686,6 +3686,61 @@ static bool delay_autosuspend(struct r8152 *tp)
                return false;
 }
 
+static int rtl8152_runtime_resume(struct r8152 *tp)
+{
+       struct net_device *netdev = tp->netdev;
+
+       if (netif_running(netdev) && netdev->flags & IFF_UP) {
+               struct napi_struct *napi = &tp->napi;
+
+               tp->rtl_ops.autosuspend_en(tp, false);
+               napi_disable(napi);
+               set_bit(WORK_ENABLE, &tp->flags);
+
+               if (netif_carrier_ok(netdev)) {
+                       if (rtl8152_get_speed(tp) & LINK_STATUS) {
+                               rtl_start_rx(tp);
+                       } else {
+                               netif_carrier_off(netdev);
+                               tp->rtl_ops.disable(tp);
+                               netif_info(tp, link, netdev, "linking down\n");
+                       }
+               }
+
+               napi_enable(napi);
+               clear_bit(SELECTIVE_SUSPEND, &tp->flags);
+               smp_mb__after_atomic();
+
+               if (!list_empty(&tp->rx_done))
+                       napi_schedule(&tp->napi);
+
+               usb_submit_urb(tp->intr_urb, GFP_NOIO);
+       } else {
+               if (netdev->flags & IFF_UP)
+                       tp->rtl_ops.autosuspend_en(tp, false);
+
+               clear_bit(SELECTIVE_SUSPEND, &tp->flags);
+       }
+
+       return 0;
+}
+
+static int rtl8152_system_resume(struct r8152 *tp)
+{
+       struct net_device *netdev = tp->netdev;
+
+       netif_device_attach(netdev);
+
+       if (netif_running(netdev) && netdev->flags & IFF_UP) {
+               tp->rtl_ops.up(tp);
+               netif_carrier_off(netdev);
+               set_bit(WORK_ENABLE, &tp->flags);
+               usb_submit_urb(tp->intr_urb, GFP_NOIO);
+       }
+
+       return 0;
+}
+
 static int rtl8152_runtime_suspend(struct r8152 *tp)
 {
        struct net_device *netdev = tp->netdev;
@@ -3784,50 +3839,18 @@ static int rtl8152_suspend(struct usb_interface *intf, 
pm_message_t message)
 static int rtl8152_resume(struct usb_interface *intf)
 {
        struct r8152 *tp = usb_get_intfdata(intf);
-       struct net_device *netdev = tp->netdev;
+       int ret;
 
        mutex_lock(&tp->control);
 
-       if (!test_bit(SELECTIVE_SUSPEND, &tp->flags))
-               netif_device_attach(netdev);
-
-       if (netif_running(netdev) && netdev->flags & IFF_UP) {
-               if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
-                       struct napi_struct *napi = &tp->napi;
-
-                       tp->rtl_ops.autosuspend_en(tp, false);
-                       napi_disable(napi);
-                       set_bit(WORK_ENABLE, &tp->flags);
-                       if (netif_carrier_ok(netdev)) {
-                               if (rtl8152_get_speed(tp) & LINK_STATUS) {
-                                       rtl_start_rx(tp);
-                               } else {
-                                       netif_carrier_off(netdev);
-                                       tp->rtl_ops.disable(tp);
-                                       netif_info(tp, link, netdev,
-                                                  "linking down\n");
-                               }
-                       }
-                       napi_enable(napi);
-                       clear_bit(SELECTIVE_SUSPEND, &tp->flags);
-                       smp_mb__after_atomic();
-                       if (!list_empty(&tp->rx_done))
-                               napi_schedule(&tp->napi);
-               } else {
-                       tp->rtl_ops.up(tp);
-                       netif_carrier_off(netdev);
-                       set_bit(WORK_ENABLE, &tp->flags);
-               }
-               usb_submit_urb(tp->intr_urb, GFP_KERNEL);
-       } else if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
-               if (netdev->flags & IFF_UP)
-                       tp->rtl_ops.autosuspend_en(tp, false);
-               clear_bit(SELECTIVE_SUSPEND, &tp->flags);
-       }
+       if (test_bit(SELECTIVE_SUSPEND, &tp->flags))
+               ret = rtl8152_runtime_resume(tp);
+       else
+               ret = rtl8152_system_resume(tp);
 
        mutex_unlock(&tp->control);
 
-       return 0;
+       return ret;
 }
 
 static int rtl8152_reset_resume(struct usb_interface *intf)
-- 
2.7.4