/* * Driver for the NXP ISP1760 chip * * Copyright 2014 Laurent Pinchart * Copyright 2007 Sebastian Siewior * * Contacts: * Sebastian Siewior * Laurent Pinchart * * 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. */ #ifndef _ISP1760_CORE_H_ #define _ISP1760_CORE_H_ #include #include "isp1760-hcd.h" #include "isp1760-udc.h" struct device; struct gpio_desc; /* * Device flags that can vary from board to board. All of these * indicate the most "atypical" case, so that a devflags of 0 is * a sane default configuration. */ #define ISP1760_FLAG_BUS_WIDTH_16 0x00000002 /* 16-bit data bus width */ #define ISP1760_FLAG_OTG_EN 0x00000004 /* Port 1 supports OTG */ #define ISP1760_FLAG_ANALOG_OC 0x00000008 /* Analog overcurrent */ #define ISP1760_FLAG_DACK_POL_HIGH 0x00000010 /* DACK active high */ #define ISP1760_FLAG_DREQ_POL_HIGH 0x00000020 /* DREQ active high */ #define ISP1760_FLAG_ISP1761 0x00000040 /* Chip is ISP1761 */ #define ISP1760_FLAG_INTR_POL_HIGH 0x00000080 /* Interrupt polarity active high */ #define ISP1760_FLAG_INTR_EDGE_TRIG 0x00000100 /* Interrupt edge triggered */ struct isp1760_device { struct device *dev; void __iomem *regs; unsigned int devflags; struct gpio_desc *rst_gpio; struct isp1760_hcd hcd; struct isp1760_udc udc; }; int isp1760_register(struct resource *mem, int irq, unsigned long irqflags, struct device *dev, unsigned int devflags); void isp1760_unregister(struct device *dev); void isp1760_set_pullup(struct isp1760_device *isp, bool enable); static inline u32 isp1760_read32(void __iomem *base, u32 reg) { return readl(base + reg); } static inline void isp1760_write32(void __iomem *base, u32 reg, u32 val) { writel(val, base + reg); } #endif et-next.git/commit/net/rxrpc/utils.c?id=b5b46c4740aed1538544f0fa849c5b76c7823469'>commitdiff
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net-next.git/tree/?id=030305d69fc6963c16003f50d7e8d74b02d0a143'>363a4e34d199178769b7e7eeb26ea2620a55847b /net/ax25/ax25_dev.c
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 'net/ax25/ax25_dev.c')