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linux/drivers/cpufreq
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Colin Ian King 8b47183460 cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get() 
commit 943bdd0cecad06da8392a33093230e30e501eccc upstream.

Currently there is an unlikely case where cpufreq_cpu_get() returns a
NULL policy and this will cause a NULL pointer dereference later on.

Fix this by passing the policy to transition_frequency_fidvid() from
the caller and hence eliminating the need for the cpufreq_cpu_get()
and cpufreq_cpu_put().

Thanks to Viresh Kumar for suggesting the fix.

Addresses-Coverity: ("Dereference null return")
Fixes: b43a7ffbf33b ("cpufreq: Notify all policy->cpus in cpufreq_notify_transition()")
Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-17 14:04:21 +01:00
..
acpi-cpufreq.c
acpi-cpufreq: Honor _PSD table setting on new AMD CPUs
2020-11-05 11:08:47 +01:00
amd_freq_sensitivity.c
cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ
2018-02-07 11:26:37 +01:00
arm_big_little_dt.c
cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
2017-11-08 23:22:20 +01:00
arm_big_little.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
arm_big_little.h
cpufreq: arm_big_little: make function arguments and structure pointer const
2017-11-08 23:22:19 +01:00
armada-37xx-cpufreq.c
cpufreq: armada-37xx: Add missing MODULE_DEVICE_TABLE
2020-10-29 09:55:10 +01:00
bmips-cpufreq.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
brcmstb-avs-cpufreq.c
cpufreq: brcmstb-avs-cpufreq: Fix types for voltage/frequency
2020-01-27 14:50:53 +01:00
cppc_cpufreq.c
cpufreq / CPPC: Add cpuinfo_cur_freq support for CPPC
2018-07-18 10:13:16 +02:00
cpufreq_conservative.c
cpufreq: conservative: Take limits changes into account properly
2018-11-13 11:08:16 -08:00
cpufreq_governor_attr_set.c
…
cpufreq_governor.c
sched/cpufreq: Fix kobject memleak
2019-05-31 06:46:12 -07:00
cpufreq_governor.h
cpufreq: Replace "max_transition_latency" with "dynamic_switching"
2017-07-26 00:15:45 +02:00
cpufreq_ondemand.c
cpufreq: governor: Drop min_sampling_rate
2017-07-22 02:25:20 +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: stats: Change return type of cpufreq_stats_update() as void
2018-01-05 13:22:46 +01:00
cpufreq_userspace.c
cpufreq: governor: Get rid of governor events
2016-06-02 23:24:15 +02:00
cpufreq-dt-platdev.c
cpufreq: Add Kryo CPU scaling driver
2018-05-30 12:53:11 +02:00
cpufreq-dt.c
cpufreq: dt: Try freeing static OPPs only if we have added them
2018-11-13 11:08:24 -08:00
cpufreq-dt.h
cpufreq: dt: Allow platform specific suspend/resume callbacks
2018-05-10 11:43:59 +02:00
cpufreq-nforce2.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
cpufreq.c
cpufreq: Register drivers only after CPU devices have been registered
2019-12-31 16:36:01 +01:00
davinci-cpufreq.c
ARM: davinci: da850: fix da850_set_pll0rate()
2017-01-02 15:02:51 +05:30
e_powersaver.c
cpufreq: e_powersaver: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
elanfreq.c
cpufreq: elanfreq: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
freq_table.c
cpufreq: Drop cpufreq_table_validate_and_show()
2018-04-10 08:40:45 +02:00
gx-suspmod.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
highbank-cpufreq.c
cpufreq: highbank: Add missing MODULE_DEVICE_TABLE
2020-12-30 11:26:00 +01:00
ia64-acpi-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
imx6q-cpufreq.c
cpufreq: imx6q: Fixes unwanted cpu overclocking on i.MX6ULL
2020-04-17 10:48:38 +02:00
intel_pstate.c
cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
2020-09-17 13:45:26 +02:00
Kconfig
cpufreq: remove at32ap-cpufreq
2018-02-07 11:44:23 +01:00
Kconfig.arm
cpufreq: exynos: Remove support for Exynos5440
2018-07-17 19:55:51 +02:00
Kconfig.powerpc
…
Kconfig.x86
sched/x86: Change CONFIG_SCHED_ITMT to CONFIG_SCHED_MC_PRIO
2016-11-30 08:27:08 +01:00
kirkwood-cpufreq.c
cpufreq: kirkwood: fix possible object reference leak
2019-05-31 06:46:24 -07:00
longhaul.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
longhaul.h
…
longrun.c
cpufreq: Don't set transition_latency for setpolicy drivers
2017-07-26 00:15:43 +02:00
loongson1-cpufreq.c
cpufreq: loongson1: Add missing MODULE_ALIAS
2020-12-30 11:26:01 +01:00
loongson2_cpufreq.c
cpufreq: Loongson2: constify platform_device_id
2017-08-18 01:44:21 +02:00
Makefile
cpufreq: exynos: Remove support for Exynos5440
2018-07-17 19:55:51 +02:00
maple-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
mediatek-cpufreq.c
cpufreq: mediatek: Add missing MODULE_DEVICE_TABLE
2020-12-30 11:26:00 +01:00
mvebu-cpufreq.c
cpufreq: mvebu: Free opp if registering failed
2017-12-16 02:29:43 +01:00
omap-cpufreq.c
PM / OPP: Update OPP users to put reference
2017-01-30 09:22:21 +01:00
p4-clockmod.c
cpufreq: p4-clockmod: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
pasemi-cpufreq.c
cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init()
2019-08-16 10:12:46 +02:00
pcc-cpufreq.c
Merge back cpufreq material for 4.19.
2018-07-25 13:28:01 +02:00
pmac32-cpufreq.c
cpufreq: pmac32: fix possible object reference leak
2019-05-31 06:46:24 -07:00
pmac64-cpufreq.c
cpufreq: Convert to using %pOF instead of full_name
2017-08-25 01:20:46 +02:00
powernow-k6.c
cpufreq: powernow: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
powernow-k7.c
cpufreq: powernow: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
powernow-k7.h
…
powernow-k8.c
cpufreq: powernow-k8: pass policy rather than use cpufreq_cpu_get()
2021-01-17 14:04:21 +01:00
powernow-k8.h
…
powernv-cpufreq.c
cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier
2020-10-30 10:38:20 +01:00
ppc_cbe_cpufreq_pervasive.c
…
ppc_cbe_cpufreq_pmi.c
cpufreq: Remove CPUFREQ_START notifier event
2017-02-04 00:05:30 +01:00
ppc_cbe_cpufreq.c
cpufreq: ppc_cbe: fix possible object reference leak
2019-05-31 06:46:24 -07:00
ppc_cbe_cpufreq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pxa2xx-cpufreq.c
cpufreq: pxa2xx: remove incorrect __init annotation
2019-03-23 20:10:01 +01:00
pxa3xx-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
qcom-cpufreq-kryo.c
cpufreq: kryo: Release OPP tables on module removal
2019-03-23 20:10:01 +01:00
qoriq-cpufreq.c
cpufreq: qoirq: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
s3c24xx-cpufreq-debugfs.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c24xx-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
s3c64xx-cpufreq.c
cpufreq: s3c64xx: remove incorrect __init annotation
2016-12-21 02:54:18 +01:00
s3c2410-cpufreq.c
…
s3c2412-cpufreq.c
cpufreq: Use consistent prefixing via pr_fmt
2016-04-09 01:35:18 +02:00
s3c2416-cpufreq.c
cpufreq: s3c2416: double free on driver init error path
2017-02-09 01:22:45 +01:00
s3c2440-cpufreq.c
cpufreq: s3c2440: fix spelling mistake: "divsiors" -> "divisors"
2018-05-10 11:50:42 +02:00
s5pv210-cpufreq.c
cpufreq: s5pv210: add missing of_node_put()
2017-07-26 22:54:01 +02:00
sa1100-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
sa1110-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
sc520_freq.c
cpufreq: sc520: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
scmi-cpufreq.c
cpufreq: scmi: Fix frequency invariance in slow path
2019-01-16 22:04:29 +01:00
scpi-cpufreq.c
cpufreq: scpi: Add missing MODULE_ALIAS
2020-12-30 11:26:01 +01:00
sfi-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
sh-cpufreq.c
cpufreq: sh: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
sparc-us2e-cpufreq.c
cpufreq: sparc: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
sparc-us3-cpufreq.c
cpufreq: sparc: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
spear-cpufreq.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
speedstep-centrino.c
cpufreq: speedstep: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
speedstep-ich.c
cpufreq: speedstep: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
speedstep-lib.c
cpufreq: speedstep: fix speedstep_detect_processor()'s return type
2018-05-10 11:46:00 +02:00
speedstep-lib.h
…
speedstep-smi.c
cpufreq: speedstep: Don't validate the frequency table twice
2018-03-20 12:07:52 +01:00
sti-cpufreq.c
cpufreq: st: Add missing MODULE_DEVICE_TABLE
2020-12-30 11:26:01 +01:00
tango-cpufreq.c
cpufreq: dt: Don't use generic platdev driver for tango
2017-07-22 02:20:59 +02:00
tegra20-cpufreq.c
cpufreq: tegra20: Wrap cpufreq into platform driver
2018-05-21 13:44:24 +02:00
tegra124-cpufreq.c
cpufreq: tegra124: add missing of_node_put()
2019-03-23 20:10:01 +01:00
tegra186-cpufreq.c
cpufreq: tegra186: Don't validate the frequency table twice
2018-03-20 12:07:53 +01:00
ti-cpufreq.c
cpufreq: ti-cpufreq: Only register platform_device when supported
2018-12-13 09:16:13 +01:00
unicore2-cpufreq.c
cpufreq: Add CPUFREQ_NO_AUTO_DYNAMIC_SWITCHING cpufreq driver flag
2017-07-26 00:15:46 +02:00
vexpress-spc-cpufreq.c
cpufreq: arm_big_little: make cpufreq_arm_bL_ops structures const
2017-11-08 23:22:20 +01:00