litmus-rt-pandaboard.git - LITMUS^RT and MC^2 V0 support for the pandaboard.

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author	Sheng Yang <sheng@linux.intel.com>	2008-11-11 04:17:45 -0500
committer	Jesse Barnes <jbarnes@virtuousgeek.org>	2008-11-19 17:12:29 -0500
commit	1df8fb3d5f078f9cab901b6106ef2c9b74eef7df (patch)
tree	48941e9ff7997acb1af25ff2a546a921b383f06f /fs/mpage.c
parent	7f0f598a0069d1ab072375965a4b69137233169c (diff)

PCI: Fix disable IRQ 0 in pci_reset_function()

Before initialization, dev->irq may be zero. Make sure we don't disable it at reset time in that case. Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

Diffstat (limited to 'fs/mpage.c')

0 files changed, 0 insertions, 0 deletions

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/*
 *  This file was based upon code in Powertweak Linux (http://powertweak.sf.net)
 *  (C) 2000-2003  Dave Jones, Arjan van de Ven, Janne Pänkälä,
 *                 Dominik Brodowski.
 *
 *  Licensed under the terms of the GNU GPL License version 2.
 *
 *  BIG FAT DISCLAIMER: Work in progress code. Possibly *dangerous*
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/cpufreq.h>
#include <linux/ioport.h>
#include <linux/timex.h>
#include <linux/io.h>

#include <asm/cpu_device_id.h>
#include <asm/msr.h>

#define POWERNOW_IOPORT 0xfff0          /* it doesn't matter where, as long
					   as it is unused */

static unsigned int                     busfreq;   /* FSB, in 10 kHz */
static unsigned int                     max_multiplier;

static unsigned int			param_busfreq = 0;
static unsigned int			param_max_multiplier = 0;

module_param_named(max_multiplier, param_max_multiplier, uint, S_IRUGO);
MODULE_PARM_DESC(max_multiplier, "Maximum multiplier (allowed values: 20 30 35 40 45 50 55 60)");

module_param_named(bus_frequency, param_busfreq, uint, S_IRUGO);
MODULE_PARM_DESC(bus_frequency, "Bus frequency in kHz");

/* Clock ratio multiplied by 10 - see table 27 in AMD#23446 */
static struct cpufreq_frequency_table clock_ratio[] = {
	{0, 60,  /* 110 -> 6.0x */ 0},
	{0, 55,  /* 011 -> 5.5x */ 0},
	{0, 50,  /* 001 -> 5.0x */ 0},
	{0, 45,  /* 000 -> 4.5x */ 0},
	{0, 40,  /* 010 -> 4.0x */ 0},
	{0, 35,  /* 111 -> 3.5x */ 0},
	{0, 30,  /* 101 -> 3.0x */ 0},
	{0, 20,  /* 100 -> 2.0x */ 0},
	{0, 0, CPUFREQ_TABLE_END}
};

static const u8 index_to_register[8] = { 6, 3, 1, 0, 2, 7, 5, 4 };
static const u8 register_to_index[8] = { 3, 2, 4, 1, 7, 6, 0, 5 };

static const struct {
	unsigned freq;
	unsigned mult;
} usual_frequency_table[] = {


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