linux-yocto/drivers
Rafael J. Wysocki 3e25a8efd2 cpufreq: intel_pstate: Check turbo_is_disabled() in store_no_turbo()
[ Upstream commit 350cbb5d2f ]

After recent changes in intel_pstate, global.turbo_disabled is only set
at the initialization time and never changed.  However, it turns out
that on some systems the "turbo disabled" bit in MSR_IA32_MISC_ENABLE,
the initial state of which is reflected by global.turbo_disabled, can be
flipped later and there should be a way to take that into account (other
than checking that MSR every time the driver runs which is costly and
useless overhead on the vast majority of systems).

For this purpose, notice that before the changes in question,
store_no_turbo() contained a turbo_is_disabled() check that was used
for updating global.turbo_disabled if the "turbo disabled" bit in
MSR_IA32_MISC_ENABLE had been flipped and that functionality can be
restored.  Then, users will be able to reset global.turbo_disabled
by writing 0 to no_turbo which used to work before on systems with
flipping "turbo disabled" bit.

This guarantees the driver state to remain in sync, but READ_ONCE()
annotations need to be added in two places where global.turbo_disabled
is accessed locklessly, so modify the driver to make that happen.

Fixes: 0940f1a801 ("cpufreq: intel_pstate: Do not update global.turbo_disabled after initialization")
Closes: https://lore.kernel.org/linux-pm/bf3ebf1571a4788e97daf861eb493c12d42639a3.camel@xry111.site
Suggested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reported-by: Xi Ruoyao <xry111@xry111.site>
Tested-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-09-09 18:54:25 +02:00
..
accessibility
acpi ACPI/IORT: Fix memory leak in iort_rmr_alloc_sids() 2025-09-09 18:54:16 +02:00
amba
android
ata ata: Fix SATA_MOBILE_LPM_POLICY description in Kconfig 2025-08-28 16:26:12 +02:00
atm atm: atmtcp: Prevent arbitrary write in atmtcp_recv_control(). 2025-09-04 15:26:27 +02:00
auxdisplay auxdisplay: charlcd: Partially revert "Move hwidth and bwidth to struct hd44780_common" 2025-06-04 14:40:07 +02:00
base PM: runtime: Clear power.needs_force_resume in pm_runtime_reinit() 2025-08-28 16:25:53 +02:00
bcma
block drbd: add missing kref_get in handle_write_conflicts 2025-08-28 16:25:51 +02:00
bluetooth Bluetooth: btusb: QCA: Fix downloading wrong NVM for WCN6855 GF variant without board ID 2025-07-24 08:51:52 +02:00
bus bus: mhi: host: Detect events pointing to unexpected TREs 2025-08-28 16:26:05 +02:00
cdrom
char ipmi: Fix strcpy source and destination the same 2025-08-28 16:26:02 +02:00
clk clk: sunxi-ng: v3s: Fix de clock definition 2025-08-15 12:05:03 +02:00
clocksource clocksource: mips-gic-timer: Enable counter when CPUs start 2025-06-04 14:40:12 +02:00
comedi comedi: Fix use of uninitialized memory in do_insn_ioctl() and do_insnlist_ioctl() 2025-08-28 16:26:14 +02:00
connector
counter counter: interrupt-cnt: Protect enable/disable OPs with mutex 2025-06-27 11:07:16 +01:00
cpufreq cpufreq: intel_pstate: Check turbo_is_disabled() in store_no_turbo() 2025-09-09 18:54:25 +02:00
cpuidle cpuidle: menu: Avoid discarding useful information 2025-06-04 14:40:11 +02:00
crypto crypto: qat - fix ring to service map for QAT GEN4 2025-08-28 16:26:12 +02:00
cxl
dax
dca
devfreq PM / devfreq: governor: Replace sscanf() with kstrtoul() in set_freq_store() 2025-08-28 16:25:52 +02:00
dio
dma dmaengine: mediatek: Fix a flag reuse error in mtk_cqdma_tx_status() 2025-09-09 18:54:24 +02:00
dma-buf dma-buf: fix timeout handling in dma_resv_wait_timeout v2 2025-07-10 15:59:53 +02:00
edac EDAC/synopsys: Clear the ECC counters on init 2025-08-28 16:25:52 +02:00
eisa
extcon
firewire
firmware firmware: arm_scmi: Ensure that the message-id supports fastchannel 2025-07-06 10:58:04 +02:00
fpga fpga: zynq_fpga: Fix the wrong usage of dma_map_sgtable() 2025-08-28 16:26:14 +02:00
fsi
gnss
gpio gpio: tps65912: check the return value of regmap_update_bits() 2025-08-28 16:25:53 +02:00
gpu drm/amd/amdgpu: Fix missing error return on kzalloc failure 2025-09-09 18:54:23 +02:00
greybus
hid HID: mcp2221: Handle reads greater than 60 bytes 2025-09-04 15:26:31 +02:00
hsi
hte
hv Drivers: hv: vmbus: Add utility function for querying ring size 2025-07-06 10:57:58 +02:00
hwmon hwmon: mlxreg-fan: Prevent fans from getting stuck at 0 RPM 2025-09-09 18:54:22 +02:00
hwspinlock
hwtracing coresight: Only check bottom two claim bits 2025-07-06 10:57:55 +02:00
i2c i2c: designware: Fix an error handling path in i2c_dw_pci_probe() 2025-09-09 18:54:19 +02:00
i3c i3c: master: Initialize ret in i3c_i2c_notifier_call() 2025-08-28 16:26:01 +02:00
idle
iio iio: light: opt3001: fix deadlock due to concurrent flag access 2025-09-09 18:54:19 +02:00
infiniband RDMA/bnxt_re: Fix to initialize the PBL array 2025-08-28 16:26:17 +02:00
input Input: gpio-keys - fix a sleep while atomic with PREEMPT_RT 2025-08-15 12:04:45 +02:00
interconnect interconnect: qcom: sc8180x: specify num_nodes 2025-08-15 12:04:55 +02:00
iommu iommu/amd: Avoid stack buffer overflow from kernel cmdline 2025-08-28 16:26:17 +02:00
ipack
irqchip irqchip: Build IMX_MU_MSI only on ARM 2025-08-15 12:05:10 +02:00
isdn mISDN: Fix memory leak in dsp_hwec_enable() 2025-09-09 18:54:14 +02:00
leds leds: leds-lp50xx: Handle reg to get correct multi_index 2025-08-28 16:26:00 +02:00
macintosh
mailbox mailbox: Not protect module_put with spin_lock_irqsave 2025-07-06 10:57:54 +02:00
mcb
md dm-table: fix checking for rq stackable devices 2025-08-28 16:26:01 +02:00
media media: venus: Fix OOB read due to missing payload bound check 2025-08-28 16:26:11 +02:00
memory
memstick memstick: Fix deadlock by moving removing flag earlier 2025-08-28 16:26:13 +02:00
message
mfd mfd: max14577: Fix wakeup source leaks on device unbind 2025-07-06 10:57:54 +02:00
misc misc: rtsx: usb: Ensure mmc child device is active when card is present 2025-08-28 16:26:03 +02:00
mmc mmc: sdhci-pci-gli: GL9763e: Mask the replay timer timeout of AER 2025-08-28 16:26:16 +02:00
most most: core: Drop device reference after usage in get_channel() 2025-08-28 16:26:14 +02:00
mtd mtd: rawnand: renesas: Add missing check after DMA map 2025-08-28 16:26:07 +02:00
mux
net vmxnet3: update MTU after device quiesce 2025-09-09 18:54:20 +02:00
nfc
ntb
nubus
nvdimm libnvdimm/labels: Fix divide error in nd_label_data_init() 2025-06-04 14:40:04 +02:00
nvme nvme: fix misaccounting of nvme-mpath inflight I/O 2025-07-24 08:51:52 +02:00
nvmem nvmem: layouts: u-boot-env: remove crc32 endianness conversion 2025-07-24 08:51:55 +02:00
of
opp
parisc
parport
pci PCI/MSI: Add an option to write MSIX ENTRY_DATA before any reads 2025-09-09 18:54:18 +02:00
pcmcia pcmcia: Add error handling for add_interval() in do_validate_mem() 2025-09-09 18:54:22 +02:00
peci
perf perf/arm-cmn: Initialise cmn->cpu earlier 2025-06-04 14:40:25 +02:00
phy phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode 2025-07-24 08:51:47 +02:00
pinctrl pinctrl: STMFX: add missing HAS_IOMEM dependency 2025-09-04 15:26:24 +02:00
platform platform/chrome: cros_ec: Unregister notifier in cros_ec_unregister() 2025-08-28 16:26:11 +02:00
pnp
power power: supply: max14577: Handle NULL pdata when CONFIG_OF is not set 2025-08-15 12:05:01 +02:00
powercap powercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw() 2025-08-15 12:04:54 +02:00
pps pps: clients: gpio: fix interrupt handling order in remove path 2025-08-28 16:25:53 +02:00
ps3
ptp ptp: Use ratelimite for freerun error message 2025-08-28 16:25:58 +02:00
pwm pwm: mediatek: Fix duty and period setting 2025-08-28 16:26:07 +02:00
rapidio drivers/rapidio/rio_cm.c: prevent possible heap overwrite 2025-06-27 11:07:36 +01:00
ras
regulator regulator: core: fix NULL dereference on unbind due to stale coupling data 2025-08-15 12:04:45 +02:00
remoteproc remoteproc: imx_rproc: skip clock enable when M-core is managed by the SCU 2025-08-28 16:25:52 +02:00
reset reset: brcmstb: Enable reset drivers for ARCH_BCM2835 2025-08-28 16:25:53 +02:00
rpmsg rpmsg: qcom_smd: Fix uninitialized return variable in __qcom_smd_send() 2025-06-27 11:07:15 +01:00
rtc rtc: ds1307: remove clear of oscillator stop flag (OSF) in probe 2025-08-28 16:26:03 +02:00
s390 s390/sclp: Fix SCCB present check 2025-08-28 16:26:13 +02:00
sbus
scsi scsi: lpfc: Fix buffer free/clear order in deferred receive path 2025-09-09 18:54:17 +02:00
sh
siox
slimbus
soc soc: qcom: mdt_loader: Ensure we don't read past the ELF header 2025-08-28 16:26:15 +02:00
soundwire soundwire: stream: restore params when prepare ports fail 2025-08-15 12:05:04 +02:00
spi spi: tegra114: Use value to check for invalid delays 2025-09-09 18:54:24 +02:00
spmi
ssb
staging media: imx: fix a potential memory leak in imx_media_csc_scaler_device_init() 2025-08-28 16:26:08 +02:00
target scsi: target: core: Generate correct identifiers for PR OUT transport IDs 2025-08-28 16:26:02 +02:00
tc
tee tee: optee: ffa: fix a typo of "optee_ffa_api_is_compatible" 2025-09-09 18:54:13 +02:00
thermal thermal: sysfs: Return ENODATA instead of EAGAIN for reads 2025-08-28 16:25:53 +02:00
thunderbolt thunderbolt: Fix copy+paste error in match_service_id() 2025-08-28 16:26:04 +02:00
tty vt: defkeymap: Map keycodes above 127 to K_HOLE 2025-08-28 16:26:05 +02:00
ufs scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE 2025-08-28 16:26:15 +02:00
uio uio_hv_generic: Align ring size to system page 2025-07-06 10:57:58 +02:00
usb usb: dwc3: Remove WARN_ON for device endpoint command timeouts 2025-08-28 16:26:15 +02:00
vdpa
vfio vfio/mlx5: fix possible overflow in tracking max message size 2025-08-28 16:26:02 +02:00
vhost vhost/net: Protect ubufs with rcu read lock in vhost_net_ubuf_put() 2025-09-04 15:26:26 +02:00
video Revert "vgacon: Add check for vc_origin address range in vgacon_scroll()" 2025-08-28 16:26:05 +02:00
virt fix locking in efi_secret_unlink() 2025-08-28 16:25:51 +02:00
virtio virtio_ring: Fix data race by tagging event_triggered as racy for KCSAN 2025-06-04 14:40:01 +02:00
vlynq
w1
watchdog watchdog: iTCO_wdt: Report error if timeout configuration fails 2025-08-28 16:25:59 +02:00
xen xen/gntdev: remove struct gntdev_copy_batch from stack 2025-08-15 12:04:58 +02:00
zorro
Kconfig
Makefile