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rockchip-kernel/drivers/regulator
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Johan Hovold 36be7afca1 regulator: core: fix deadlock on regulator enable 
commit cb3543cff9 upstream.

When updating the operating mode as part of regulator enable, the caller
has already locked the regulator tree and drms_uA_update() must not try
to do the same in order not to trigger a deadlock.

The lock inversion is reported by lockdep as:

  ======================================================
  WARNING: possible circular locking dependency detected
  6.1.0-next-20221215 #142 Not tainted
  ------------------------------------------------------
  udevd/154 is trying to acquire lock:
  ffffc11f123d7e50 (regulator_list_mutex){+.+.}-{3:3}, at: regulator_lock_dependent+0x54/0x280

  but task is already holding lock:
  ffff80000e4c36e8 (regulator_ww_class_acquire){+.+.}-{0:0}, at: regulator_enable+0x34/0x80

  which lock already depends on the new lock.

  ...

   Possible unsafe locking scenario:

         CPU0                    CPU1
         ----                    ----
    lock(regulator_ww_class_acquire);
                                 lock(regulator_list_mutex);
                                 lock(regulator_ww_class_acquire);
    lock(regulator_list_mutex);

   *** DEADLOCK ***

just before probe of a Qualcomm UFS controller (occasionally) deadlocks
when enabling one of its regulators.

Fixes: 9243a195be ("regulator: core: Change voltage setting path")
Fixes: f8702f9e4a ("regulator: core: Use ww_mutex for regulators locking")
Cc: stable@vger.kernel.org      # 5.0
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221215104646.19818-1-johan+linaro@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-14 10:16:24 +01:00
..
88pg86x.c
regulator: 88pg86x: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:09 +01:00
88pm800-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
88pm8607.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
aat2870-regulator.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336
2019-06-05 17:37:07 +02:00
ab3100.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194
2019-05-30 11:29:22 -07:00
ab8500-ext.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 197
2019-05-30 11:29:22 -07:00
ab8500.c
regulator: ab8500: Remove unused embedded struct expand_register
2020-06-25 20:11:13 +01:00
act8865-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
act8945a-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
ad5398.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149
2019-05-30 11:25:18 -07:00
anatop-regulator.c
regulator: anatop: Constify anatop_core_rops
2020-06-18 13:47:31 +01:00
arizona-ldo1.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
arizona-micsupp.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
as3711-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
as3722-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
axp20x-regulator.c
regulator: axp20x: Fix reference cout leak
2021-03-04 11:37:58 +01:00
bcm590xx-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
bd718x7-regulator.c
regulator: bd718x7: Fix the BUCK7 voltage setting on BD71837
2021-06-16 12:01:43 +02:00
bd9571mwv-regulator.c
regulator: bd9571mwv: Fix AVS and DVFS voltage range
2021-04-14 08:42:05 +02:00
bd9576-regulator.c
regulator: bd9576: Fix return from bd957x_probe()
2021-05-14 09:50:10 +02:00
bd70528-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
bd71828-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
core.c
regulator: core: fix deadlock on regulator enable
2023-01-14 10:16:24 +01:00
cpcap-regulator.c
regulator: cpcap-regulator: Demote kerneldoc header to standard comment
2020-06-25 20:11:16 +01:00
cros-ec-regulator.c
regulator: cros-ec: Fix error code in dev_err message
2021-06-23 14:42:47 +02:00
da903x-regulator.c
regulator: rename da903x to da903x-regulator
2020-06-25 15:29:21 +01:00
da9052-regulator.c
regulator: da9052: Ensure enough delay time for .set_voltage_time_sel
2021-07-14 16:55:56 +02:00
da9055-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
da9062-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
da9063-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
da9210-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
da9210-regulator.h
regulator: da9xxx: Switch to SPDX identifier
2019-05-03 15:07:39 +09:00
da9211-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
da9211-regulator.h
regulator: da9xxx: Switch to SPDX identifier
2019-05-03 15:07:39 +09:00
db8500-prcmu.c
regulator: db8500-prcmu: Use true,false for bool variable
2020-05-06 15:16:59 +01:00
dbx500-prcmu.c
regulator: dbx500: Remove unused debugfs goto label
2020-08-21 17:38:49 +01:00
dbx500-prcmu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 197
2019-05-30 11:29:22 -07:00
devres.c
regulator: devres: Standardise on function documentation headers
2020-07-08 17:37:54 +01:00
dummy.c
regulator: dummy: Constify dummy_initdata and dummy_ops
2020-09-14 14:24:36 +01:00
dummy.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
fan53555.c
regulator: fan53555: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:11 +01:00
fan53880.c
regulator: fan53880: Fix vsel_mask setting for FAN53880_BUCK
2021-07-14 16:56:06 +02:00
fixed-helper.c
regulator: fixed: Convert to use GPIO descriptor only
2018-09-17 14:32:22 -07:00
fixed.c
regulator: fixed: Constify static regulator_ops
2020-09-14 14:24:37 +01:00
gpio-regulator.c
regulator: gpio: Honor regulator-boot-on property
2020-07-20 16:31:54 +01:00
helpers.c
regulator: Fix pickable ranges mapping
2020-06-12 14:57:17 +01:00
hi655x-regulator.c
regulator: hi655x: Fix pass wrong pointer to config.driver_data
2021-07-14 16:56:09 +02:00
hi6421-regulator.c
regulator: hi6421: Fix getting wrong drvdata
2021-07-28 14:35:36 +02:00
hi6421v530-regulator.c
regulator: Replace HTTP links with HTTPS ones
2020-07-22 14:43:48 +01:00
internal.h
regulator: core: Don't try to remove device links if add failed
2019-11-15 12:04:20 +00:00
isl6271a-regulator.c
regulator: isl6271a: Constify isl_core_ops and isl_fixed_ops
2019-01-28 15:30:58 +00:00
isl9305.c
regulator: Convert i2c drivers to use .probe_new
2020-01-13 15:03:06 +00:00
Kconfig
regulator: rtmv20: Adds support for Richtek RTMV20 load switch regulator
2020-09-28 19:26:32 +01:00
lm363x-regulator.c
regulator: lm363x: Fix n_voltages setting for lm36274
2019-07-22 13:18:13 +01:00
lochnagar-regulator.c
regulator: lochnagar: Add additional VDDCORE range
2020-09-07 18:49:13 +01:00
lp872x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
lp873x-regulator.c
regulator: Replace HTTP links with HTTPS ones
2020-07-22 14:43:48 +01:00
lp3971.c
regulator: Convert i2c drivers to use .probe_new
2020-01-13 15:03:06 +00:00
lp3972.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
lp8755.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
lp8788-buck.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
lp8788-ldo.c
regulator: lp8788-ldo: make array en_mask static const, makes object smaller
2019-09-09 10:53:48 +01:00
lp87565-regulator.c
regulator: Replace HTTP links with HTTPS ones
2020-07-22 14:43:48 +01:00
ltc3589.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
ltc3676.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
Makefile
regulator: rtmv20: Adds support for Richtek RTMV20 load switch regulator
2020-09-28 19:26:32 +01:00
max1586.c
regulator: max1586: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:14 +01:00
max8649.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
max8660.c
regulator: max8660: remove redundant assignment of variable ret
2019-08-15 15:09:21 +01:00
max8907-regulator.c
regulator: max8907: Constify static structs
2020-06-18 13:47:34 +01:00
max8925-regulator.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
max8952.c
Merge tag 'v5.2-rc4' into regulator-5.3
2019-06-18 19:12:47 +01:00
max8973-regulator.c
regulator: max8973: Let core handle GPIO descriptor
2018-12-11 01:04:31 +00:00
max8997-regulator.c
regulator: max8997: Constify struct regulator_ops
2020-06-18 13:47:35 +01:00
max8998.c
regulator: max8998: Staticify internal function max8998_get_current_limit()
2020-06-26 15:34:18 +01:00
max14577-regulator.c
regulator: max14577-regulator: Demote kerneldoc header to standard comment
2020-06-25 20:11:17 +01:00
max77620-regulator.c
regulator: max77620: Use device_set_of_node_from_dev()
2021-06-16 12:01:43 +02:00
max77650-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
max77686-regulator.c
regulator: max77686: switch to using fwnode_gpiod_get_index
2019-10-07 14:02:20 +01:00
max77693-regulator.c
regulator: maxim: Add SPDX license identifiers
2018-08-08 10:52:50 +01:00
max77802-regulator.c
regulator: max77802: Drop unused includes
2019-06-10 15:40:58 +01:00
max77826-regulator.c
regulator: max77826: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:15 +01:00
mc13xxx-regulator-core.c
regulator: mc13xxx: Constify regulator_ops variables
2019-03-04 00:01:08 +00:00
mc13xxx.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
mc13783-regulator.c
regulator: mc13xxx: Constify regulator_ops variables
2019-03-04 00:01:08 +00:00
mc13892-regulator.c
regulator: mc13xxx: Constify regulator_ops variables
2019-03-04 00:01:08 +00:00
mcp16502.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
mp886x.c
regulator: mp886x: use "mps,switch-frequency-hz"
2020-08-24 14:17:53 +01:00
mp5416.c
regulator: mp5416: Fix output discharge enable bit for LDOs
2020-02-17 19:13:26 +00:00
mp8859.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
mpq7920.c
regulator: mpq7920: Convert to use .probe_new
2020-01-14 15:25:00 +00:00
mpq7920.h
regulator: mpq7920: Fix incorrect defines
2020-01-17 15:34:31 +00:00
mt6311-regulator.c
regulator: Convert i2c drivers to use .probe_new
2020-01-13 15:03:06 +00:00
mt6311-regulator.h
regulator: mt63xx: Switch to SPDX identifier
2019-04-26 10:38:23 +01:00
mt6323-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
mt6358-regulator.c
regulator: mt6358: Fix vdram2 .vsel_mask
2021-07-14 16:55:56 +02:00
mt6360-regulator.c
regulator: mt6360: fix spelling mistake: "regulaotr" -> "regulator"
2020-08-27 14:55:44 +01:00
mt6380-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
mt6397-regulator.c
regulator: mt6397: Implement of_map_mode
2020-07-02 15:25:45 +01:00
of_regulator.c
regulator: of: Fix refcount leak bug in of_get_regulation_constraints()
2022-08-21 15:15:36 +02:00
palmas-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
pbias-regulator.c
regulator: Replace HTTP links with HTTPS ones
2020-07-22 14:43:48 +01:00
pca9450-regulator.c
regulator: pca9450: Clear PRESET_EN bit to fix BUCK1/2/3 voltage setting
2021-03-25 09:04:14 +01:00
pcap-regulator.c
regulator: pcap-regulator: remove unused variable 'SW3_table'
2019-10-01 12:46:37 +01:00
pcf50633-regulator.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
pfuze100-regulator.c
regulator: pfuze100: Fix the global-out-of-bounds access in pfuze100_regulator_probe()
2022-09-23 14:16:59 +02:00
pv88060-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
pv88060-regulator.h
regulator: pv880x0: Switch to SPDX identifier
2019-05-03 15:05:52 +09:00
pv88080-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
pv88080-regulator.h
regulator: pv880x0: Switch to SPDX identifier
2019-05-03 15:05:52 +09:00
pv88090-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
pv88090-regulator.h
regulator: pv880x0: Switch to SPDX identifier
2019-05-03 15:05:52 +09:00
pwm-regulator.c
Merge remote-tracking branch 'regulator/for-5.10' into regulator-next
2020-10-05 16:54:56 +01:00
qcom_rpm-regulator.c
regulator: qcom_rpm: Fix circular deferral regression
2022-10-26 13:25:09 +02:00
qcom_smd-regulator.c
regulator: qcom_smd: Fix pm8916_pldo range
2022-08-21 15:15:34 +02:00
qcom_spmi-regulator.c
regulator: qcom_spmi: Add PM660/PM660L regulators
2020-10-01 21:25:23 +01:00
qcom_usb_vbus-regulator.c
regulator: set of_node for qcom vbus regulator
2020-08-18 18:38:25 +01:00
qcom-labibb-regulator.c
regulator: qcom: labibb: Constify static structs
2020-10-01 21:43:16 +01:00
qcom-rpmh-regulator.c
regulator: qcom-rpmh: Correct the pmic5_hfsmps515 buck
2021-03-30 14:31:51 +02:00
rc5t583-regulator.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
rk808-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
rn5t618-regulator.c
Merge tag 'regulator-fix-v5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
2019-12-17 13:08:41 -08:00
rohm-regulator.c
regulator: bd718x7, bd71828, Fix dvs voltage levels
2021-03-04 11:38:07 +01:00
rpi-panel-attiny-regulator.c
regulator: rpi-panel: Handle I2C errors/timing to the Atmel
2022-04-08 14:40:30 +02:00
rt4801-regulator.c
regulator: rt4801: Fix NULL pointer dereference if priv->enable_gpios is NULL
2021-06-23 14:42:48 +02:00
rt5033-regulator.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 450
2019-06-05 17:37:18 +02:00
rtmv20-regulator.c
regulator: rtmv20: Fix wrong mask for strobe-polarity-high
2021-08-08 09:05:22 +02:00
s2mpa01.c
regulator: samsung: Rename Samsung to lowercase
2020-01-06 20:47:42 +00:00
s2mps11.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
s5m8767.c
regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS is disabled
2021-11-18 14:03:45 +01:00
sc2731-regulator.c
regulator: sc2731: Constify regulators
2019-03-26 13:25:35 +00:00
sky81452-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
slg51000-regulator.c
regulator: slg51000: Wait after asserting CS pin
2022-12-14 11:31:53 +01:00
slg51000-regulator.h
regulator: slg51000: add slg51000 regulator driver
2019-05-13 11:07:43 +01:00
stm32-booster.c
regulator: stm32-booster: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:20 +01:00
stm32-pwr.c
regulator: stm32-pwr: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:17 +01:00
stm32-vrefbuf.c
regulator: stm32-vrefbuf: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:18 +01:00
stpmic1_regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
stw481x-vmmc.c
regulator: stw481x-vmmc: Constify static structs
2020-09-14 14:24:38 +01:00
sy8106a-regulator.c
regulator: sy8106a: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:19 +01:00
sy8824x.c
regulator: Convert i2c drivers to use .probe_new
2020-01-13 15:03:06 +00:00
sy8827n.c
regulator: sy8827n: Fix W=1 build warning when CONFIG_OF=n
2020-08-18 17:18:40 +01:00
ti-abb-regulator.c
regulator: ti-abb: Fix array out of bound read access on the first transition
2020-11-18 17:59:24 +00:00
tps6105x-regulator.c
regulator: tps6105x: Constify tps6105x_regulator_ops
2020-09-01 15:48:52 +01:00
tps6507x-regulator.c
regulator: Replace HTTP links with HTTPS ones
2020-07-22 14:43:48 +01:00
tps6524x-regulator.c
regulator: tps6524x: Remove *rdev[N_REGULATORS] from struct tps6524x
2019-04-15 09:44:41 +01:00
tps6586x-regulator.c
regulator: tps6586x: Constify static regulator_ops
2020-09-01 15:48:56 +01:00
tps51632-regulator.c
regulator: tps51632: Constify tps51632_dcdc_ops
2020-09-01 15:48:51 +01:00
tps62360-regulator.c
regulator: tps62360: Constify tps62360_dcdc_ops
2020-09-01 15:48:53 +01:00
tps65023-regulator.c
regulator: tps65023: Fix W=1 build warning when CONFIG_OF=n
2020-08-21 17:28:21 +01:00
tps65086-regulator.c
regulator: tps65086: Constify static regulator_ops
2020-09-01 15:48:54 +01:00
tps65090-regulator.c
regulator: tps65090: constify static regulator_ops
2020-09-01 15:48:55 +01:00
tps65132-regulator.c
regulator: Convert i2c drivers to use .probe_new
2020-01-13 15:03:06 +00:00
tps65217-regulator.c
regulator: Replace HTTP links with HTTPS ones
2020-07-22 14:43:48 +01:00
tps65218-regulator.c
regulator: Replace HTTP links with HTTPS ones
2020-07-22 14:43:48 +01:00
tps65910-regulator.c
regulator: tps65910: Silence deferred probe error
2021-09-15 09:50:23 +02:00
tps65912-regulator.c
regulator: tps65912: Constify static regulator_ops
2020-09-01 15:48:56 +01:00
tps80031-regulator.c
regulator: tps80031: remove redundant assignment to variables ret and val
2020-04-14 16:57:44 +01:00
twl6030-regulator.c
regulator: twl6030: fix get status of twl6032 regulators
2022-12-14 11:31:54 +01:00
twl-regulator.c
regulator: use linear_ranges helper
2020-05-08 18:18:13 +01:00
uniphier-regulator.c
regulator: uniphier: Add missing MODULE_DEVICE_TABLE
2021-07-14 16:55:50 +02:00
userspace-consumer.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
vctrl-regulator.c
regulator: vctrl: Avoid lockdep warning in enable/disable ops
2021-09-15 09:50:30 +02:00
vexpress-regulator.c
regulator: vexpress: Use PTR_ERR_OR_ZERO() to simplify code
2019-11-18 12:58:24 +00:00
virtual.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
vqmmc-ipq4019-regulator.c
regulator: vqmmc-ipq4019: Fix platform_no_drv_owner.cocci warnings
2020-01-17 15:34:21 +00:00
wm831x-dcdc.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
wm831x-isink.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
wm831x-ldo.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
wm8350-regulator.c
regulator: remove locking around regulator_notifier_call_chain()
2020-09-07 18:35:25 +01:00
wm8400-regulator.c
regulator: wm8400-regulator: Repair dodgy kerneldoc header formatting
2020-06-26 15:34:24 +01:00
wm8994-regulator.c
regulator: wm8994: Add an off-on delay for WM8994 variant
2022-04-20 09:23:22 +02:00