/* * PTP 1588 clock support - support for timestamping in PHY devices * * Copyright (C) 2010 OMICRON electronics GmbH * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include #include static unsigned int classify(const struct sk_buff *skb) { if (likely(skb->dev && skb->dev->phydev && skb->dev->phydev->drv)) return ptp_classify_raw(skb); else return PTP_CLASS_NONE; } void skb_clone_tx_timestamp(struct sk_buff *skb) { struct phy_device *phydev; struct sk_buff *clone; unsigned int type; if (!skb->sk) return; type = classify(skb); if (type == PTP_CLASS_NONE) return; phydev = skb->dev->phydev; if (likely(phydev->drv->txtstamp)) { clone = skb_clone_sk(skb); if (!clone) return; phydev->drv->txtstamp(phydev, clone, type); } } EXPORT_SYMBOL_GPL(skb_clone_tx_timestamp); bool skb_defer_rx_timestamp(struct sk_buff *skb) { struct phy_device *phydev; unsigned int type; if (!skb->dev || !skb->dev->phydev || !skb->dev->phydev->drv) return false; if (skb_headroom(skb) < ETH_HLEN) return false; __skb_push(skb, ETH_HLEN); type = ptp_classify_raw(skb); __skb_pull(skb, ETH_HLEN); if (type == PTP_CLASS_NONE) return false; phydev = skb->dev->phydev; if (likely(phydev->drv->rxtstamp)) return phydev->drv->rxtstamp(phydev, skb, type); return false; } EXPORT_SYMBOL_GPL(skb_defer_rx_timestamp); cgi/linux/net-next.git/log/net/lapb'>
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authorAlexander Stein <alexander.stein@systec-electronic.com>2017-01-30 12:35:28 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-01-30 15:53:57 +0100
commitcdca06e4e85974d8a3503ab15709dbbaf90d3dd1 (patch)
tree268b0c01070a957006db97c88dccb5fb061440ff /net/lapb
parent1b89970d81bbd52720fc64a3fe9572ee33588363 (diff)
pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler
According to VLI64 Intel Atom E3800 Specification Update (#329901) concurrent read accesses may result in returning 0xffffffff and write accesses may be dropped silently. To workaround all accesses must be protected by locks. Cc: stable@vger.kernel.org Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'net/lapb')