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authorhayeswang <hayeswang@realtek.com>2015-07-24 05:54:25 (GMT)
committerDavid S. Miller <davem@davemloft.net>2015-07-27 07:56:39 (GMT)
commit41cec84cf2858b59121a1cec5e9b09fc1bf1d882 (patch)
tree633d458001b950f4133afef11e739e1f0bd8d056 /drivers/net/usb
parent7daed8dc2a4b48c5a7ea5b3243d01837ec1aed0a (diff)
downloadlinux-41cec84cf2858b59121a1cec5e9b09fc1bf1d882.tar.xz
r8152: don't enable napi before rx ready
Adjust napi_disable() and napi_enable() to avoid r8152_poll() start working before rx ready. Otherwise, it may have race condition for rx_agg. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb')
-rw-r--r--drivers/net/usb/r8152.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index d537c30..144dc64 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2075,7 +2075,6 @@ static int rtl_start_rx(struct r8152 *tp)
{
int i, ret = 0;
- napi_disable(&tp->napi);
INIT_LIST_HEAD(&tp->rx_done);
for (i = 0; i < RTL8152_MAX_RX; i++) {
INIT_LIST_HEAD(&tp->rx_info[i].list);
@@ -2083,7 +2082,6 @@ static int rtl_start_rx(struct r8152 *tp)
if (ret)
break;
}
- napi_enable(&tp->napi);
if (ret && ++i < RTL8152_MAX_RX) {
struct list_head rx_queue;
@@ -2951,8 +2949,10 @@ static void set_carrier(struct r8152 *tp)
if (!netif_carrier_ok(netdev)) {
tp->rtl_ops.enable(tp);
set_bit(RTL8152_SET_RX_MODE, &tp->flags);
+ napi_disable(&tp->napi);
netif_carrier_on(netdev);
rtl_start_rx(tp);
+ napi_enable(&tp->napi);
}
} else {
if (netif_carrier_ok(netdev)) {
@@ -3395,9 +3395,11 @@ static int rtl8152_resume(struct usb_interface *intf)
if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
rtl_runtime_suspend_enable(tp, false);
clear_bit(SELECTIVE_SUSPEND, &tp->flags);
+ napi_disable(&tp->napi);
set_bit(WORK_ENABLE, &tp->flags);
if (netif_carrier_ok(tp->netdev))
rtl_start_rx(tp);
+ napi_enable(&tp->napi);
} else {
tp->rtl_ops.up(tp);
rtl8152_set_speed(tp, AUTONEG_ENABLE,