Viresh Kumar 26619804e7 cpufreq: create link to policy only for registered CPUs ... If a cpufreq driver is registered very early in the boot stage (e.g. registered from postcore_initcall()), then cpufreq core may generate kernel warnings for it. In this case, the CPUs are brought online, then the cpufreq driver is registered, and then the CPU topology devices are registered. However, by the time cpufreq_add_dev() gets called, the cpu device isn't stored in the per-cpu variable (cpu_sys_devices,) which is read by get_cpu_device(). So the cpufreq core fails to get device for the CPU, for which cpufreq_add_dev() was called in the first place and we will hit a WARN_ON(!cpu_dev). Even if we reuse the 'dev' parameter passed to cpufreq_add_dev() to avoid that warning, there might be other CPUs online that share the policy with the cpu for which cpufreq_add_dev() is called. Eventually get_cpu_device() will return NULL for them as well, and we will hit the same WARN_ON() again. In order to fix these issues, change cpufreq core to create links to the policy for a cpu only when cpufreq_add_dev() is called for that CPU. Reuse the 'real_cpus' mask to track that as well. Note that cpufreq_remove_dev() already handles removal of the links for individual CPUs and cpufreq_add_dev() has aligned with that now. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2016-09-13 02:41:15 +02:00
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acpi-cpufreq.c	cpufreq: acpi-cpufreq: use cached frequency mapping when possible	2016-07-21 22:28:32 +02:00
amd_freq_sensitivity.c	cpufreq: Reuse new freq-table helpers	2016-07-07 00:14:27 +02:00
arm_big_little_dt.c	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00
arm_big_little.c	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00
arm_big_little.h	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00
at32ap-cpufreq.c
blackfin-cpufreq.c
cppc_cpufreq.c	cpufreq: ACPI / CPPC: Add module support for cppc_cpufreq driver	2016-04-25 15:59:35 +02:00
cpufreq_conservative.c	cpufreq: conservative: Do not use transition notifications	2016-06-13 23:33:49 +02:00
cpufreq_governor_attr_set.c	cpufreq: governor: Move abstract gov_attr_set code to seperate file	2016-04-02 01:09:01 +02:00
cpufreq_governor.c	cpufreq: governor: Drop gov_cancel_work()	2016-06-09 23:39:29 +02:00
cpufreq_governor.h	cpufreq: Drop the 'initialized' field from struct cpufreq_governor	2016-06-02 23:24:39 +02:00
cpufreq_ondemand.c	cpufreq: Reuse new freq-table helpers	2016-07-07 00:14:27 +02:00
cpufreq_ondemand.h	cpufreq: ondemand: Don't keep a copy of freq_table pointer	2016-06-09 00:58:06 +02:00
cpufreq_performance.c	cpufreq: governor: Get rid of governor events	2016-06-02 23:24:15 +02:00
cpufreq_powersave.c	cpufreq: governor: Get rid of governor events	2016-06-02 23:24:15 +02:00
cpufreq_stats.c	cpufreq: Remove cpufreq_frequency_get_table()	2016-06-09 00:58:05 +02:00
cpufreq_userspace.c	cpufreq: governor: Get rid of governor events	2016-06-02 23:24:15 +02:00
cpufreq-dt-platdev.c	cpufreq: dt: Support governor tunables per policy	2016-09-13 02:39:12 +02:00
cpufreq-dt.c	cpufreq: dt: Support governor tunables per policy	2016-09-13 02:39:12 +02:00
cpufreq-dt.h	cpufreq: dt: Support governor tunables per policy	2016-09-13 02:39:12 +02:00
cpufreq-nforce2.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
cpufreq.c	cpufreq: create link to policy only for registered CPUs	2016-09-13 02:41:15 +02:00
cris-artpec3-cpufreq.c
cris-etraxfs-cpufreq.c
davinci-cpufreq.c	cpufreq: davinci: Reuse cpufreq_generic_frequency_table_verify()	2016-06-09 00:58:07 +02:00
dbx500-cpufreq.c
e_powersaver.c	cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for built-in or module	2016-04-27 22:42:34 +02:00
elanfreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
exynos5440-cpufreq.c
freq_table.c	cpufreq: Handle sorted frequency tables more efficiently	2016-07-07 00:13:20 +02:00
gx-suspmod.c
highbank-cpufreq.c
ia64-acpi-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
imx6q-cpufreq.c
integrator-cpufreq.c
intel_pstate.c	intel_pstate: constify local structures	2016-09-13 02:40:24 +02:00
Kconfig	cpufreq: dt: Update kconfig description	2016-09-13 02:39:12 +02:00
Kconfig.arm	cpufreq: hisilicon: Use generic platdev driver	2016-04-25 16:18:24 +02:00
Kconfig.powerpc
Kconfig.x86	cpufreq: intel_pstate: Enforce _PPC limits	2016-04-28 01:01:39 +02:00
kirkwood-cpufreq.c
longhaul.c	Power management material for v4.7-rc1	2016-05-16 19:17:22 -07:00
longhaul.h
longrun.c
loongson1-cpufreq.c	CPUFREQ: Loongson1: Replace goto out with return in ls1x_cpufreq_probe()	2016-05-13 14:02:08 +02:00
loongson2_cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
Makefile	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2016-05-19 10:02:26 -07:00
maple-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
mt8173-cpufreq.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2016-05-26 09:23:43 -07:00
mvebu-cpufreq.c	cpufreq: mvebu: fix integer to pointer cast	2016-06-13 23:49:43 +02:00
omap-cpufreq.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
p4-clockmod.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
pasemi-cpufreq.c
pcc-cpufreq.c	Revert "cpufreq: pcc-cpufreq: update default value of cpuinfo_transition_latency"	2016-07-22 23:51:06 +02:00
pmac32-cpufreq.c	powerpc updates for 4.7	2016-05-20 10:12:41 -07:00
pmac64-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
powernow-k6.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
powernow-k7.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
powernow-k7.h
powernow-k8.c
powernow-k8.h
powernv-cpufreq.c	Merge branches 'pm-sleep' and 'pm-cpufreq'	2016-08-12 22:53:58 +02:00
ppc_cbe_cpufreq_pervasive.c
ppc_cbe_cpufreq_pmi.c	cpufreq: Remove cpufreq_frequency_get_table()	2016-06-09 00:58:05 +02:00
ppc_cbe_cpufreq.c
ppc_cbe_cpufreq.h	cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for built-in or module	2016-04-27 22:42:34 +02:00
pxa2xx-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
pxa3xx-cpufreq.c
qoriq-cpufreq.c	cpufreq: qoriq: Fix cooling device registration issue during suspend	2016-04-25 16:07:02 +02:00
s3c24xx-cpufreq-debugfs.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
s3c24xx-cpufreq.c	cpufreq: Return index from cpufreq_frequency_table_target()	2016-06-09 00:58:06 +02:00
s3c64xx-cpufreq.c
s3c2410-cpufreq.c
s3c2412-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
s3c2416-cpufreq.c
s3c2440-cpufreq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
s5pv210-cpufreq.c	ARM: SoC driver updates for v4.8	2016-08-01 18:36:01 -04:00
sa1100-cpufreq.c
sa1110-cpufreq.c
sc520_freq.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
scpi-cpufreq.c	cpufreq-SCPI: Delete unnecessary assignment for the field "owner"	2016-08-18 03:42:32 +02:00
sfi-cpufreq.c
sh-cpufreq.c
sparc-us2e-cpufreq.c
sparc-us3-cpufreq.c
spear-cpufreq.c
speedstep-centrino.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
speedstep-ich.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
speedstep-lib.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
speedstep-lib.h
speedstep-smi.c	cpufreq: Use consistent prefixing via pr_fmt	2016-04-09 01:35:18 +02:00
sti-cpufreq.c	cpufreq: st: enable selective initialization based on the platform	2016-04-28 15:25:56 +02:00
tegra20-cpufreq.c
tegra124-cpufreq.c	cpufreq: tegra124: No need of setting platform-data	2016-04-09 01:12:09 +02:00
unicore2-cpufreq.c
vexpress-spc-cpufreq.c	cpufreq: arm_big_little: use generic OPP functions for {init, free}_opp_table	2016-05-05 01:40:04 +02:00