/* * Copyright 2007-2012 Siemens AG * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. * * 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. * * Written by: * Dmitry Eremin-Solenikov * Sergey Lapin * Maxim Gorbachyov * Alexander Smirnov */ #include #include #include #include #include #include #include #include #include "ieee802154_i.h" #include "driver-ops.h" void ieee802154_xmit_worker(struct work_struct *work) { struct ieee802154_local *local = container_of(work, struct ieee802154_local, tx_work); struct sk_buff *skb = local->tx_skb; struct net_device *dev = skb->dev; int res; res = drv_xmit_sync(local, skb); if (res) goto err_tx; ieee802154_xmit_complete(&local->hw, skb, false); dev->stats.tx_packets++; dev->stats.tx_bytes += skb->len; return; err_tx: /* Restart the netif queue on each sub_if_data object. */ ieee802154_wake_queue(&local->hw); kfree_skb(skb); netdev_dbg(dev, "transmission failed\n"); } static netdev_tx_t ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb) { struct net_device *dev = skb->dev; int ret; if (!(local->hw.flags & IEEE802154_HW_TX_OMIT_CKSUM)) { u16 crc = crc_ccitt(0, skb->data, skb->len); put_unaligned_le16(crc, skb_put(skb, 2)); } /* Stop the netif queue on each sub_if_data object. */ ieee802154_stop_queue(&local->hw); /* async is priority, otherwise sync is fallback */ if (local->ops->xmit_async) { ret = drv_xmit_async(local, skb); if (ret) { ieee802154_wake_queue(&local->hw); goto err_tx; } dev->stats.tx_packets++; dev->stats.tx_bytes += skb->len; } else { local->tx_skb = skb; queue_work(local->workqueue, &local->tx_work); } return NETDEV_TX_OK; err_tx: kfree_skb(skb); return NETDEV_TX_OK; } netdev_tx_t ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); skb->skb_iif = dev->ifindex; return ieee802154_tx(sdata->local, skb); } netdev_tx_t ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); int rc; /* TODO we should move it to wpan_dev_hard_header and dev_hard_header * functions. The reason is wireshark will show a mac header which is * with security fields but the payload is not encrypted. */ rc = mac802154_llsec_encrypt(&sdata->sec, skb); if (rc) { netdev_warn(dev, "encryption failed: %i\n", rc); kfree_skb(skb); return NETDEV_TX_OK; } skb->skb_iif = dev->ifindex; return ieee802154_tx(sdata->local, skb); } next.git/commit/include?h=nds-private-remove&id=030305d69fc6963c16003f50d7e8d74b02d0a143'>include/dt-bindings/clock/exynos5410.h
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /include/dt-bindings/clock/exynos5410.h
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'include/dt-bindings/clock/exynos5410.h')