r8152: check RTL8152_UNPLUG

When the device is unplugged, the driver would try to disable the
device. Add checking the flag of RTL8152_UNPLUG to skip setting
the device when it is unplugged. This could shorten the time of
unloading the driver.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 18e12a3f7fc3..3fbfb0869030 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -929,6 +929,9 @@ static int read_mii_word(struct net_device *netdev, int phy_id, int reg)
         struct r8152 *tp = netdev_priv(netdev);
         int ret;
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return -ENODEV;
+
         if (phy_id != R8152_PHY_ID)
                 return -EINVAL;
 
@@ -949,6 +952,9 @@ void write_mii_word(struct net_device *netdev, int phy_id, int reg, int val)
 {
         struct r8152 *tp = netdev_priv(netdev);
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return;
+
         if (phy_id != R8152_PHY_ID)
                 return;
 
@@ -1962,6 +1968,9 @@ static int rtl_enable(struct r8152 *tp)
 
 static int rtl8152_enable(struct r8152 *tp)
 {
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return -ENODEV;
+
         set_tx_qlen(tp);
         rtl_set_eee_plus(tp);
 
@@ -1994,6 +2003,9 @@ static void r8153_set_rx_agg(struct r8152 *tp)
 
 static int rtl8153_enable(struct r8152 *tp)
 {
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return -ENODEV;
+
         set_tx_qlen(tp);
         rtl_set_eee_plus(tp);
         r8153_set_rx_agg(tp);
@@ -2006,6 +2018,11 @@ static void rtl8152_disable(struct r8152 *tp)
         u32 ocp_data;
         int i;
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
+                rtl_drop_queued_tx(tp);
+                return;
+        }
+
         ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
         ocp_data &= ~RCR_ACPT_ALL;
         ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);
@@ -2232,6 +2249,9 @@ static void r8152b_exit_oob(struct r8152 *tp)
         u32 ocp_data;
         int i;
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return;
+
         ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
         ocp_data &= ~RCR_ACPT_ALL;
         ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);
@@ -2460,6 +2480,9 @@ static void r8153_first_init(struct r8152 *tp)
         u32 ocp_data;
         int i;
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return;
+
         rxdy_gated_en(tp, true);
         r8153_teredo_off(tp);
 
@@ -2687,6 +2710,11 @@ out:
 
 static void rtl8152_down(struct r8152 *tp)
 {
+        if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
+                rtl_drop_queued_tx(tp);
+                return;
+        }
+
         r8152_power_cut_en(tp, false);
         r8152b_disable_aldps(tp);
         r8152b_enter_oob(tp);
@@ -2695,6 +2723,11 @@ static void rtl8152_down(struct r8152 *tp)
 
 static void rtl8153_down(struct r8152 *tp)
 {
+        if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
+                rtl_drop_queued_tx(tp);
+                return;
+        }
+
         r8153_u1u2en(tp, false);
         r8153_power_cut_en(tp, false);
         r8153_disable_aldps(tp);
@@ -2904,6 +2937,9 @@ static void r8152b_init(struct r8152 *tp)
 {
         u32 ocp_data;
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return;
+
         if (tp->version == RTL_VER_01) {
                 ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_LED_FEATURE);
                 ocp_data &= ~LED_MODE_MASK;
@@ -2939,6 +2975,9 @@ static void r8153_init(struct r8152 *tp)
         u32 ocp_data;
         int i;
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return;
+
         r8153_u1u2en(tp, false);
 
         for (i = 0; i < 500; i++) {
@@ -3213,6 +3252,9 @@ static int rtl8152_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
         struct mii_ioctl_data *data = if_mii(rq);
         int res;
 
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return -ENODEV;
+
         res = usb_autopm_get_interface(tp->intf);
         if (res < 0)
                 goto out;
@@ -3293,12 +3335,18 @@ static void r8152b_get_version(struct r8152 *tp)
 
 static void rtl8152_unload(struct r8152 *tp)
 {
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return;
+
         if (tp->version != RTL_VER_01)
                 r8152_power_cut_en(tp, true);
 }
 
 static void rtl8153_unload(struct r8152 *tp)
 {
+        if (test_bit(RTL8152_UNPLUG, &tp->flags))
+                return;
+
         r8153_power_cut_en(tp, true);
 }