diff options
| author | hayeswang <hayeswang@realtek.com> | 2017-01-26 01:38:32 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-17 04:41:55 (GMT) |
| commit | e9ace99c4bb097a44b20b3e6d356e4dd9b5f0c02 (patch) | |
| tree | 63bd82a73020a4c1e8be3868ab09f67023e27493 /drivers/net | |
| parent | c1a7106b3b0149c263998d801619f3023af03234 (diff) | |
| download | linux-e9ace99c4bb097a44b20b3e6d356e4dd9b5f0c02.tar.xz | |
r8152: avoid start_xmit to schedule napi when napi is disabled
[ Upstream commit de9bf29dd6e4a8a874cb92f8901aed50a9d0b1d3 ]
Stop the tx when the napi is disabled to prevent napi_schedule() is
called.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/usb/r8152.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 039607d..afb953a 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -3158,10 +3158,13 @@ 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); + netif_stop_queue(netdev); napi_disable(&tp->napi); netif_carrier_on(netdev); rtl_start_rx(tp); napi_enable(&tp->napi); + netif_wake_queue(netdev); + netif_info(tp, link, netdev, "carrier on\n"); } } else { if (netif_carrier_ok(netdev)) { @@ -3169,6 +3172,7 @@ static void set_carrier(struct r8152 *tp) napi_disable(&tp->napi); tp->rtl_ops.disable(tp); napi_enable(&tp->napi); + netif_info(tp, link, netdev, "carrier off\n"); } } } @@ -3518,12 +3522,12 @@ static int rtl8152_pre_reset(struct usb_interface *intf) if (!netif_running(netdev)) return 0; + netif_stop_queue(netdev); napi_disable(&tp->napi); clear_bit(WORK_ENABLE, &tp->flags); usb_kill_urb(tp->intr_urb); cancel_delayed_work_sync(&tp->schedule); if (netif_carrier_ok(netdev)) { - netif_stop_queue(netdev); mutex_lock(&tp->control); tp->rtl_ops.disable(tp); mutex_unlock(&tp->control); @@ -3551,10 +3555,10 @@ static int rtl8152_post_reset(struct usb_interface *intf) rtl_start_rx(tp); rtl8152_set_rx_mode(netdev); mutex_unlock(&tp->control); - netif_wake_queue(netdev); } napi_enable(&tp->napi); + netif_wake_queue(netdev); usb_submit_urb(tp->intr_urb, GFP_KERNEL); if (!list_empty(&tp->rx_done)) |