From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755248AbbBLGeg (ORCPT ); Thu, 12 Feb 2015 01:34:36 -0500 Received: from rtits2.realtek.com ([60.250.210.242]:48186 "EHLO rtits2.realtek.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752691AbbBLGdu (ORCPT ); Thu, 12 Feb 2015 01:33:50 -0500 Authenticated-By: X-SpamFilter-By: BOX Solutions SpamTrap 5.52 with qID t1C6XlOh004192, This message is accepted by code: ctloc85258 From: Hayes Wang To: CC: , , , Hayes Wang Subject: [PATCH net-next v2 2/3] r8152: change rx early size when the mtu is changed Date: Thu, 12 Feb 2015 14:33:47 +0800 Message-ID: <1394712342-15778-143-Taiwan-albertk@realtek.com> X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <1394712342-15778-141-Taiwan-albertk@realtek.com> References: <1394712342-15778-137-Taiwan-albertk@realtek.com> <1394712342-15778-141-Taiwan-albertk@realtek.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [172.21.71.122] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The rx early size is calculated with the mtu, so it has to be re-calculated when the mtu is changed. Signed-off-by: Hayes Wang --- drivers/net/usb/r8152.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index b2e6566..46b99c6 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -3722,6 +3722,7 @@ out: static int rtl8152_change_mtu(struct net_device *dev, int new_mtu) { struct r8152 *tp = netdev_priv(dev); + int ret; switch (tp->version) { case RTL_VER_01: @@ -3734,9 +3735,22 @@ static int rtl8152_change_mtu(struct net_device *dev, int new_mtu) if (new_mtu < 68 || new_mtu > RTL8153_MAX_MTU) return -EINVAL; + ret = usb_autopm_get_interface(tp->intf); + if (ret < 0) + return ret; + + mutex_lock(&tp->control); + dev->mtu = new_mtu; - return 0; + if (netif_running(dev) && netif_carrier_ok(dev)) + r8153_set_rx_early_size(tp); + + mutex_unlock(&tp->control); + + usb_autopm_put_interface(tp->intf); + + return ret; } static const struct net_device_ops rtl8152_netdev_ops = { -- 2.1.0