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path: root/include/soc/tegra/pm.h
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/*
 * Copyright (C) 2014 NVIDIA Corporation
 *
 * 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 __SOC_TEGRA_PM_H__
#define __SOC_TEGRA_PM_H__

enum tegra_suspend_mode {
	TEGRA_SUSPEND_NONE = 0,
	TEGRA_SUSPEND_LP2, /* CPU voltage off */
	TEGRA_SUSPEND_LP1, /* CPU voltage off, DRAM self-refresh */
	TEGRA_SUSPEND_LP0, /* CPU + core voltage off, DRAM self-refresh */
	TEGRA_MAX_SUSPEND_MODE,
};

#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
enum tegra_suspend_mode
tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode);

/* low-level resume entry point */
void tegra_resume(void);
#else
static inline enum tegra_suspend_mode
tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
{
	return TEGRA_SUSPEND_NONE;
}

static inline void tegra_resume(void)
{
}
#endif /* CONFIG_PM_SLEEP */

#endif /* __SOC_TEGRA_PM_H__ */
/net-next.git/diff/include/trace/events/filelock.h?id=030305d69fc6963c16003f50d7e8d74b02d0a143&id2=4d191b1b63c209e37bf27938ef365244d3c41084'>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/trace/events/filelock.h')