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authorLinus Torvalds <torvalds@linux-foundation.org>2018-02-09 09:40:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-09 09:40:33 -0800
commita051c14b8db35cb269e9d91e11fc3573b6f7475d (patch)
tree35d603e7619b2a64d55fd9529519eac629b24173
parentf1517df8701c9f12dae9ce7f43a5d300a6917619 (diff)
parent616f16093d852215f6a1188de1bafdc1f8892924 (diff)
Merge tag 'pm-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki: "These are mostly fixes and cleanups and removal of the no longer needed at32ap-cpufreq driver. Specifics: - Drop the at32ap-cpufreq driver which is useless after the removal of the corresponding arch (Corentin LABBE). - Fix a regression from the 4.14 cycle in the APM idle driver by making it initialize the polling state properly (Rafael Wysocki). - Fix a crash on failing system suspend due to a missing check in the cpufreq core (Bo Yan). - Make the intel_pstate driver initialize the hardware-managed P-state control (HWP) feature on CPU0 upon resume from system suspend if HWP had been enabled before the system was suspended (Chen Yu). - Fix up the SCPI cpufreq driver after recent changes (Sudeep Holla, Wei Yongjun). - Avoid pointer subtractions during frequency table walks in cpufreq (Dominik Brodowski). - Avoid the check for ProcFeedback in ST/CZ in the cpufreq driver for AMD processors and add a MODULE_ALIAS for cpufreq on ARM IMX (Akshu Agrawal, Nicolas Chauvet). - Fix the prototype of swsusp_arch_resume() on x86 (Arnd Bergmann). - Fix up the parsing of power domains DT data (Ulf Hansson)" * tag 'pm-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: arm: imx: Add MODULE_ALIAS for cpufreq cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx() cpufreq: intel_pstate: Enable HWP during system resume on CPU0 cpufreq: scpi: fix error return code in scpi_cpufreq_init() x86: hibernate: fix swsusp_arch_resume() prototype PM / domains: Fix up domain-idle-states OF parsing cpufreq: scpi: fix static checker warning cdev isn't an ERR_PTR cpufreq: remove at32ap-cpufreq cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ x86: PM: Make APM idle driver initialize polling state cpufreq: Skip cpufreq resume if it's not suspended
-rw-r--r--Documentation/cpu-freq/cpu-drivers.txt4
-rw-r--r--arch/x86/kernel/apm_32.c1
-rw-r--r--drivers/base/power/domain.c76
-rw-r--r--drivers/cpufreq/Kconfig10
-rw-r--r--drivers/cpufreq/Makefile1
-rw-r--r--drivers/cpufreq/amd_freq_sensitivity.c11
-rw-r--r--drivers/cpufreq/at32ap-cpufreq.c127
-rw-r--r--drivers/cpufreq/cpufreq.c3
-rw-r--r--drivers/cpufreq/exynos5440-cpufreq.c7
-rw-r--r--drivers/cpufreq/freq_table.c8
-rw-r--r--drivers/cpufreq/imx6q-cpufreq.c1
-rw-r--r--drivers/cpufreq/intel_pstate.c5
-rw-r--r--drivers/cpufreq/longhaul.c4
-rw-r--r--drivers/cpufreq/pasemi-cpufreq.c6
-rw-r--r--drivers/cpufreq/scpi-cpufreq.c6
-rw-r--r--drivers/sh/clk/core.c5
-rw-r--r--drivers/staging/irda/drivers/sh_sir.c4
-rw-r--r--include/linux/cpufreq.h125
18 files changed, 166 insertions, 238 deletions
diff --git a/Documentation/cpu-freq/cpu-drivers.txt b/Documentation/cpu-freq/cpu-drivers.txt
index 434c49cc7330..61546ac578d6 100644
--- a/Documentation/cpu-freq/cpu-drivers.txt
+++ b/Documentation/cpu-freq/cpu-drivers.txt
@@ -291,3 +291,7 @@ For example:
/* Do something with pos */
pos->frequency = ...
}
+
+If you need to work with the position of pos within driver_freq_table,
+do not subtract the pointers, as it is quite costly. Instead, use the
+macros cpufreq_for_each_entry_idx() and cpufreq_for_each_valid_entry_idx().
diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index ab1865342002..dc0ca8e29c75 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -2389,6 +2389,7 @@ static int __init apm_init(void)
if (HZ != 100)
idle_period = (idle_period * HZ) / 100;
if (idle_threshold < 100) {
+ cpuidle_poll_state_init(&apm_idle_driver);
if (!cpuidle_register_driver(&apm_idle_driver))
if (cpuidle_register_device(&apm_cpuidle_device))
cpuidle_unregister_driver(&apm_idle_driver);
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 528b24149bc7..1ea0e2502e8e 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2290,6 +2290,38 @@ static int genpd_parse_state(struct genpd_power_state *genpd_state,
return 0;
}
+static int genpd_iterate_idle_states(struct device_node *dn,
+ struct genpd_power_state *states)
+{
+ int ret;
+ struct of_phandle_iterator it;
+ struct device_node *np;
+ int i = 0;
+
+ ret = of_count_phandle_with_args(dn, "domain-idle-states", NULL);
+ if (ret <= 0)
+ return ret;
+
+ /* Loop over the phandles until all the requested entry is found */
+ of_for_each_phandle(&it, ret, dn, "domain-idle-states", NULL, 0) {
+ np = it.node;
+ if (!of_match_node(idle_state_match, np))
+ continue;
+ if (states) {
+ ret = genpd_parse_state(&states[i], np);
+ if (ret) {
+ pr_err("Parsing idle state node %pOF failed with err %d\n",
+ np, ret);
+ of_node_put(np);
+ return ret;
+ }
+ }
+ i++;
+ }
+
+ return i;
+}
+
/**
* of_genpd_parse_idle_states: Return array of idle states for the genpd.
*
@@ -2299,49 +2331,31 @@ static int genpd_parse_state(struct genpd_power_state *genpd_state,
*
* Returns the device states parsed from the OF node. The memory for the states
* is allocated by this function and is the responsibility of the caller to
- * free the memory after use.
+ * free the memory after use. If no domain idle states is found it returns
+ * -EINVAL and in case of errors, a negative error code.
*/
int of_genpd_parse_idle_states(struct device_node *dn,
struct genpd_power_state **states, int *n)
{
struct genpd_power_state *st;
- struct device_node *np;
- int i = 0;
- int err, ret;
- int count;
- struct of_phandle_iterator it;
- const struct of_device_id *match_id;
+ int ret;
- count = of_count_phandle_with_args(dn, "domain-idle-states", NULL);
- if (count <= 0)
- return -EINVAL;
+ ret = genpd_iterate_idle_states(dn, NULL);
+ if (ret <= 0)
+ return ret < 0 ? ret : -EINVAL;
- st = kcalloc(count, sizeof(*st), GFP_KERNEL);
+ st = kcalloc(ret, sizeof(*st), GFP_KERNEL);
if (!st)
return -ENOMEM;
- /* Loop over the phandles until all the requested entry is found */
- of_for_each_phandle(&it, err, dn, "domain-idle-states", NULL, 0) {
- np = it.node;
- match_id = of_match_node(idle_state_match, np);
- if (!match_id)
- continue;
- ret = genpd_parse_state(&st[i++], np);
- if (ret) {
- pr_err
- ("Parsing idle state node %pOF failed with err %d\n",
- np, ret);
- of_node_put(np);
- kfree(st);
- return ret;
- }
+ ret = genpd_iterate_idle_states(dn, st);
+ if (ret <= 0) {
+ kfree(st);
+ return ret < 0 ? ret : -EINVAL;
}
- *n = i;
- if (!i)
- kfree(st);
- else
- *states = st;
+ *states = st;
+ *n = ret;
return 0;
}
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index d8addbce40bc..608af20a3494 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -239,16 +239,6 @@ if PPC32 || PPC64
source "drivers/cpufreq/Kconfig.powerpc"
endif
-if AVR32
-config AVR32_AT32AP_CPUFREQ
- bool "CPU frequency driver for AT32AP"
- depends on PLATFORM_AT32AP
- default n
- help
- This enables the CPU frequency driver for AT32AP processors.
- If in doubt, say N.
-endif
-
if IA64
config IA64_ACPI_CPUFREQ
tristate "ACPI Processor P-States driver"
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index e07715ce8844..c60c1e141d9d 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -100,7 +100,6 @@ obj-$(CONFIG_POWERNV_CPUFREQ) += powernv-cpufreq.o
##################################################################################
# Other platform drivers
-obj-$(CONFIG_AVR32_AT32AP_CPUFREQ) += at32ap-cpufreq.o
obj-$(CONFIG_BFIN_CPU_FREQ) += blackfin-cpufreq.o
obj-$(CONFIG_BMIPS_CPUFREQ) += bmips-cpufreq.o
obj-$(CONFIG_CRIS_MACH_ARTPEC3) += cris-artpec3-cpufreq.o
diff --git a/drivers/cpufreq/amd_freq_sensitivity.c b/drivers/cpufreq/amd_freq_sensitivity.c
index 042023bbbf62..be926d9a66e5 100644
--- a/drivers/cpufreq/amd_freq_sensitivity.c
+++ b/drivers/cpufreq/amd_freq_sensitivity.c
@@ -14,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
+#include <linux/pci.h>
#include <linux/percpu-defs.h>
#include <linux/init.h>
#include <linux/mod_devicetable.h>
@@ -109,12 +110,18 @@ out:
static int __init amd_freq_sensitivity_init(void)
{
u64 val;
+ struct pci_dev *pcidev;
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
return -ENODEV;
- if (!static_cpu_has(X86_FEATURE_PROC_FEEDBACK))
- return -ENODEV;
+ pcidev = pci_get_device(PCI_VENDOR_ID_AMD,
+ PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
+
+ if (!pcidev) {
+ if (!static_cpu_has(X86_FEATURE_PROC_FEEDBACK))
+ return -ENODEV;
+ }
if (rdmsrl_safe(MSR_AMD64_FREQ_SENSITIVITY_ACTUAL, &val))
return -ENODEV;
diff --git a/drivers/cpufreq/at32ap-cpufreq.c b/drivers/cpufreq/at32ap-cpufreq.c
deleted file mode 100644
index 7b612c8bb09e..000000000000
--- a/drivers/cpufreq/at32ap-cpufreq.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * Copyright (C) 2004-2007 Atmel Corporation
- *
- * Based on MIPS implementation arch/mips/kernel/time.c
- * Copyright 2001 MontaVista Software Inc.
- *
- * 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.
- */
-
-/*#define DEBUG*/
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-
-static struct cpufreq_frequency_table *freq_table;
-
-static unsigned int ref_freq;
-static unsigned long loops_per_jiffy_ref;
-
-static int at32_set_target(struct cpufreq_policy *policy, unsigned int index)
-{
- unsigned int old_freq, new_freq;
-
- old_freq = policy->cur;
- new_freq = freq_table[index].frequency;
-
- if (!ref_freq) {
- ref_freq = old_freq;
- loops_per_jiffy_ref = boot_cpu_data.loops_per_jiffy;
- }
-
- if (old_freq < new_freq)
- boot_cpu_data.loops_per_jiffy = cpufreq_scale(
- loops_per_jiffy_ref, ref_freq, new_freq);
- clk_set_rate(policy->clk, new_freq * 1000);
- if (new_freq < old_freq)
- boot_cpu_data.loops_per_jiffy = cpufreq_scale(
- loops_per_jiffy_ref, ref_freq, new_freq);
-
- return 0;
-}
-
-static int at32_cpufreq_driver_init(struct cpufreq_policy *policy)
-{
- unsigned int frequency, rate, min_freq;
- struct clk *cpuclk;
- int retval, steps, i;
-
- if (policy->cpu != 0)
- return -EINVAL;
-
- cpuclk = clk_get(NULL, "cpu");
- if (IS_ERR(cpuclk)) {
- pr_debug("cpufreq: could not get CPU clk\n");
- retval = PTR_ERR(cpuclk);
- goto out_err;
- }
-
- min_freq = (clk_round_rate(cpuclk, 1) + 500) / 1000;
- frequency = (clk_round_rate(cpuclk, ~0UL) + 500) / 1000;
- policy->cpuinfo.transition_latency = 0;
-
- /*
- * AVR32 CPU frequency rate scales in power of two between maximum and
- * minimum, also add space for the table end marker.
- *
- * Further validate that the frequency is usable, and append it to the
- * frequency table.
- */
- steps = fls(frequency / min_freq) + 1;
- freq_table = kzalloc(steps * sizeof(struct cpufreq_frequency_table),
- GFP_KERNEL);
- if (!freq_table) {
- retval = -ENOMEM;
- goto out_err_put_clk;
- }
-
- for (i = 0; i < (steps - 1); i++) {
- rate = clk_round_rate(cpuclk, frequency * 1000) / 1000;
-
- if (rate != frequency)
- freq_table[i].frequency = CPUFREQ_ENTRY_INVALID;
- else
- freq_table[i].frequency = frequency;
-
- frequency /= 2;
- }
-
- policy->clk = cpuclk;
- freq_table[steps - 1].frequency = CPUFREQ_TABLE_END;
-
- retval = cpufreq_table_validate_and_show(policy, freq_table);
- if (!retval) {
- printk("cpufreq: AT32AP CPU frequency driver\n");
- return 0;
- }
-
- kfree(freq_table);
-out_err_put_clk:
- clk_put(cpuclk);
-out_err:
- return retval;
-}
-
-static struct cpufreq_driver at32_driver = {
- .name = "at32ap",
- .init = at32_cpufreq_driver_init,
- .verify = cpufreq_generic_frequency_table_verify,
- .target_index = at32_set_target,
- .get = cpufreq_generic_get,
- .flags = CPUFREQ_STICKY,
-};
-
-static int __init at32_cpufreq_init(void)
-{
- return cpufreq_register_driver(&at32_driver);
-}
-late_initcall(at32_cpufreq_init);
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 421f318c0e66..de33ebf008ad 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1686,6 +1686,9 @@ void cpufreq_resume(void)
if (!cpufreq_driver)
return;
+ if (unlikely(!cpufreq_suspended))
+ return;
+
cpufreq_suspended = false;
if (!has_target() && !cpufreq_driver->resume)
diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c
index b6b369c22272..932caa386ece 100644
--- a/drivers/cpufreq/exynos5440-cpufreq.c
+++ b/drivers/cpufreq/exynos5440-cpufreq.c
@@ -115,10 +115,10 @@ static struct cpufreq_freqs freqs;
static int init_div_table(void)
{
struct cpufreq_frequency_table *pos, *freq_tbl = dvfs_info->freq_table;
- unsigned int tmp, clk_div, ema_div, freq, volt_id;
+ unsigned int tmp, clk_div, ema_div, freq, volt_id, idx;
struct dev_pm_opp *opp;
- cpufreq_for_each_entry(pos, freq_tbl) {
+ cpufreq_for_each_entry_idx(pos, freq_tbl, idx) {
opp = dev_pm_opp_find_freq_exact(dvfs_info->dev,
pos->frequency * 1000, true);
if (IS_ERR(opp)) {
@@ -154,8 +154,7 @@ static int init_div_table(void)
tmp = (clk_div | ema_div | (volt_id << P0_7_VDD_SHIFT)
| ((freq / FREQ_UNIT) << P0_7_FREQ_SHIFT));
- __raw_writel(tmp, dvfs_info->base + XMU_PMU_P0_7 + 4 *
- (pos - freq_tbl));
+ __raw_writel(tmp, dvfs_info->base + XMU_PMU_P0_7 + 4 * idx);
dev_pm_opp_put(opp);
}
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
index 3bbbf9e6960c..6d007f824ca7 100644
--- a/drivers/cpufreq/freq_table.c
+++ b/drivers/cpufreq/freq_table.c
@@ -143,10 +143,9 @@ int cpufreq_table_index_unsorted(struct cpufreq_policy *policy,
break;
}
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, i) {
freq = pos->frequency;
- i = pos - table;
if ((freq < policy->min) || (freq > policy->max))
continue;
if (freq == target_freq) {
@@ -211,15 +210,16 @@ int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy,
unsigned int freq)
{
struct cpufreq_frequency_table *pos, *table = policy->freq_table;
+ int idx;
if (unlikely(!table)) {
pr_debug("%s: Unable to find frequency table\n", __func__);
return -ENOENT;
}
- cpufreq_for_each_valid_entry(pos, table)
+ cpufreq_for_each_valid_entry_idx(pos, table, idx)
if (pos->frequency == freq)
- return pos - table;
+ return idx;
return -EINVAL;
}
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 741f22e5cee3..ff67859948b3 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -504,6 +504,7 @@ static struct platform_driver imx6q_cpufreq_platdrv = {
};
module_platform_driver(imx6q_cpufreq_platdrv);
+MODULE_ALIAS("platform:imx6q-cpufreq");
MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
MODULE_DESCRIPTION("Freescale i.MX6Q cpufreq driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 7edf7a0e5a96..6d084c61ee25 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -779,6 +779,8 @@ static int intel_pstate_hwp_save_state(struct cpufreq_policy *policy)
return 0;
}
+static void intel_pstate_hwp_enable(struct cpudata *cpudata);
+
static int intel_pstate_resume(struct cpufreq_policy *policy)
{
if (!hwp_active)
@@ -786,6 +788,9 @@ static int intel_pstate_resume(struct cpufreq_policy *policy)
mutex_lock(&intel_pstate_limits_lock);
+ if (policy->cpu == 0)
+ intel_pstate_hwp_enable(all_cpu_data[policy->cpu]);
+
all_cpu_data[policy->cpu]->epp_policy = 0;
intel_pstate_hwp_set(policy->cpu);
diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
index 5faa37c5b091..942632a27b50 100644
--- a/drivers/cpufreq/longhaul.c
+++ b/drivers/cpufreq/longhaul.c
@@ -600,7 +600,7 @@ static void longhaul_setup_voltagescaling(void)
/* Calculate kHz for one voltage step */
kHz_step = (highest_speed - min_vid_speed) / numvscales;
- cpufreq_for_each_entry(freq_pos, longhaul_table) {
+ cpufreq_for_each_entry_idx(freq_pos, longhaul_table, j) {
speed = freq_pos->frequency;
if (speed > min_vid_speed)
pos = (speed - min_vid_speed) / kHz_step + minvid.pos;
@@ -609,7 +609,7 @@ static void longhaul_setup_voltagescaling(void)
freq_pos->driver_data |= mV_vrm_table[pos] << 8;
vid = vrm_mV_table[mV_vrm_table[pos]];
pr_info("f: %d kHz, index: %d, vid: %d mV\n",
- speed, (int)(freq_pos - longhaul_table), vid.mV);
+ speed, j, vid.mV);
}
can_scale_voltage = 1;
diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
index b257fc7d5204..75dfbd2a58ea 100644
--- a/drivers/cpufreq/pasemi-cpufreq.c
+++ b/drivers/cpufreq/pasemi-cpufreq.c
@@ -139,7 +139,7 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
struct cpufreq_frequency_table *pos;
const u32 *max_freqp;
u32 max_freq;
- int cur_astate;
+ int cur_astate, idx;
struct resource res;
struct device_node *cpu, *dn;
int err = -ENODEV;
@@ -198,9 +198,9 @@ static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy)
pr_debug("initializing frequency table\n");
/* initialize frequency table */
- cpufreq_for_each_entry(pos, pas_freqs) {
+ cpufreq_for_each_entry_idx(pos, pas_freqs, idx) {
pos->frequency = get_astate_freq(pos->driver_data) * 100000;
- pr_debug("%d: %d\n", (int)(pos - pas_freqs), pos->frequency);
+ pr_debug("%d: %d\n", idx, pos->frequency);
}
cur_astate = get_cur_astate(policy->cpu);
diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
index 247fcbfa4cb5..c32a833e1b00 100644
--- a/drivers/cpufreq/scpi-cpufreq.c
+++ b/drivers/cpufreq/scpi-cpufreq.c
@@ -145,6 +145,7 @@ static int scpi_cpufreq_init(struct cpufreq_policy *policy)
if (IS_ERR(priv->clk)) {
dev_err(cpu_dev, "%s: Failed to get clk for cpu: %d\n",
__func__, cpu_dev->id);
+ ret = PTR_ERR(priv->clk);
goto out_free_cpufreq_table;
}
@@ -197,11 +198,8 @@ static int scpi_cpufreq_exit(struct cpufreq_policy *policy)
static void scpi_cpufreq_ready(struct cpufreq_policy *policy)
{
struct scpi_data *priv = policy->driver_data;
- struct thermal_cooling_device *cdev;
- cdev = of_cpufreq_cooling_register(policy);
- if (!IS_ERR(cdev))
- priv->cdev = cdev;
+ priv->cdev = of_cpufreq_cooling_register(policy);
}
static struct cpufreq_driver scpi_cpufreq_driver = {
diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c
index 92863e3818e5..9475353f49d6 100644
--- a/drivers/sh/clk/core.c
+++ b/drivers/sh/clk/core.c
@@ -197,10 +197,11 @@ int clk_rate_table_find(struct clk *clk,
unsigned long rate)
{
struct cpufreq_frequency_table *pos;
+ int idx;
- cpufreq_for_each_valid_entry(pos, freq_table)
+ cpufreq_for_each_valid_entry_idx(pos, freq_table, idx)
if (pos->frequency == rate)
- return pos - freq_table;
+ return idx;
return -ENOENT;
}
diff --git a/drivers/staging/irda/drivers/sh_sir.c b/drivers/staging/irda/drivers/sh_sir.c
index fede6864c737..0d0687cc454a 100644
--- a/drivers/staging/irda/drivers/sh_sir.c
+++ b/drivers/staging/irda/drivers/sh_sir.c
@@ -226,7 +226,7 @@ static u32 sh_sir_find_sclk(struct clk *irda_clk)
clk_put(pclk);
/* IrDA can not set over peripheral_clk */
- cpufreq_for_each_valid_entry(pos, freq_table) {
+ cpufreq_for_each_valid_entry_idx(pos, freq_table, index) {
u32 freq = pos->frequency;
/* IrDA should not over peripheral_clk */
@@ -236,7 +236,7 @@ static u32 sh_sir_find_sclk(struct clk *irda_clk)
tmp = freq % SCLK_BASE;
if (tmp < min) {
min = tmp;
- index = pos - freq_table;
+ break;
}
}
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 065f3a8eb486..21e8d248d956 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -629,6 +629,18 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
for (pos = table; pos->frequency != CPUFREQ_TABLE_END; pos++)
/*
+ * cpufreq_for_each_entry_idx - iterate over a cpufreq_frequency_table
+ * with index
+ * @pos: the cpufreq_frequency_table * to use as a loop cursor.
+ * @table: the cpufreq_frequency_table * to iterate over.
+ * @idx: the table entry currently being processed
+ */
+
+#define cpufreq_for_each_entry_idx(pos, table, idx) \
+ for (pos = table, idx = 0; pos->frequency != CPUFREQ_TABLE_END; \
+ pos++, idx++)
+
+/*
* cpufreq_for_each_valid_entry - iterate over a cpufreq_frequency_table
* excluding CPUFREQ_ENTRY_INVALID frequencies.
* @pos: the cpufreq_frequency_table * to use as a loop cursor.
@@ -641,6 +653,21 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
continue; \
else
+/*
+ * cpufreq_for_each_valid_entry_idx - iterate with index over a cpufreq
+ * frequency_table excluding CPUFREQ_ENTRY_INVALID frequencies.
+ * @pos: the cpufreq_frequency_table * to use as a loop cursor.
+ * @table: the cpufreq_frequency_table * to iterate over.
+ * @idx: the table entry currently being processed
+ */
+
+#define cpufreq_for_each_valid_entry_idx(pos, table, idx) \
+ cpufreq_for_each_entry_idx(pos, table, idx) \
+ if (pos->frequency == CPUFREQ_ENTRY_INVALID) \
+ continue; \
+ else
+
+
int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table);
@@ -667,19 +694,20 @@ static inline int cpufreq_table_find_index_al(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
- struct cpufreq_frequency_table *pos, *best = table - 1;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq >= target_freq)
- return pos - table;
+ return idx;
- best = pos;
+ best = idx;
}
- return best - table;
+ return best;
}
/* Find lowest freq at or above target in a table in descending order */
@@ -687,28 +715,29 @@ static inline int cpufreq_table_find_index_dl(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
- struct cpufreq_frequency_table *pos, *best = table - 1;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq > target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found above target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Works only on sorted freq-tables */
@@ -728,28 +757,29 @@ static inline int cpufreq_table_find_index_ah(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
- struct cpufreq_frequency_table *pos, *best = table - 1;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq < target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found below target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Find highest freq at or below target in a table in descending order */
@@ -757,19 +787,20 @@ static inline int cpufreq_table_find_index_dh(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
- struct cpufreq_frequency_table *pos, *best = table - 1;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq <= target_freq)
- return pos - table;
+ return idx;
- best = pos;
+ best = idx;
}
- return best - table;
+ return best;
}
/* Works only on sorted freq-tables */
@@ -789,32 +820,33 @@ static inline int cpufreq_table_find_index_ac(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
- struct cpufreq_frequency_table *pos, *best = table - 1;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq < target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found below target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
/* Choose the closest freq */
- if (target_freq - best->frequency > freq - target_freq)
- return pos - table;
+ if (target_freq - table[best].frequency > freq - target_freq)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Find closest freq to target in a table in descending order */
@@ -822,32 +854,33 @@ static inline int cpufreq_table_find_index_dc(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct cpufreq_frequency_table *table = policy->freq_table;
- struct cpufreq_frequency_table *pos, *best = table - 1;
+ struct cpufreq_frequency_table *pos;
unsigned int freq;
+ int idx, best = -1;
- cpufreq_for_each_valid_entry(pos, table) {
+ cpufreq_for_each_valid_entry_idx(pos, table, idx) {
freq = pos->frequency;
if (freq == target_freq)
- return pos - table;
+ return idx;
if (freq > target_freq) {
- best = pos;
+ best = idx;
continue;
}
/* No freq found above target_freq */
- if (best == table - 1)
- return pos - table;
+ if (best == -1)
+ return idx;
/* Choose the closest freq */
- if (best->frequency - target_freq > target_freq - freq)
- return pos - table;
+ if (table[best].frequency - target_freq > target_freq - freq)
+ return idx;
- return best - table;
+ return best;
}
- return best - table;
+ return best;
}
/* Works only on sorted freq-tables */

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