diff options
| author | hayeswang <hayeswang@realtek.com> | 2017-01-26 09:38:32 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-17 06:39:38 +0200 |
| commit | 70752628521df94b45ed24287fdf216f9b587681 (patch) | |
| tree | 0871c6f0a9d204dec79afe509cc17c0707eae0c8 /drivers/net/usb/r8152.c | |
| parent | 5270bf63719c2c5e3a3d715ac78d394baea899d9 (diff) | |
| download | linux-stable-70752628521df94b45ed24287fdf216f9b587681.tar.gz linux-stable-70752628521df94b45ed24287fdf216f9b587681.tar.bz2 linux-stable-70752628521df94b45ed24287fdf216f9b587681.zip | |
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/usb/r8152.c')
| -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 c12fc9af0234..1c27e6fb99f9 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -2993,10 +2993,13 @@ 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)) { @@ -3004,6 +3007,7 @@ 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"); } } } @@ -3388,12 +3392,12 @@ 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); @@ -3421,10 +3425,10 @@ 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); return 0; |