2014-04-11 09:55:17

by Hayes Wang

Subject: [PATCH net] 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 <[email protected]>
---
drivers/net/usb/r8152.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 18e12a3..3fbfb08 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);
}

--
1.9.0

2014-04-12 06:01:24

by David Miller

Subject: Re: [PATCH net] r8152: check RTL8152_UNPLUG

From: Hayes Wang <[email protected]>
Date: Fri, 11 Apr 2014 17:54:31 +0800

> 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 <[email protected]>

Applied.