linux.git/drivers/reset, branch v6.12.80 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git reset: gpio: suppress bind attributes in sysfs 2026-03-04T12:21:45+00:00 Bartosz Golaszewski bartosz.golaszewski@oss.qualcomm.com 2025-12-04T09:44:12+00:00 09d6efc6abd42809956d598906c222ccd1c8ae92 [ Upstream commit 16de4c6a8fe9ff497ca1aba33ef0dbee09f11952 ] This is a special device that's created dynamically and is supposed to stay in memory forever. We also currently don't have a devlink between it and the actual reset consumer. Suppress sysfs bind attributes so that user-space can't unbind the device because - as of now - it will cause a use-after-free splat from any user that puts the reset control handle. Fixes: cee544a40e44 ("reset: gpio: Add GPIO-based reset controller") Cc: stable@vger.kernel.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 16de4c6a8fe9ff497ca1aba33ef0dbee09f11952 ]

This is a special device that's created dynamically and is supposed to
stay in memory forever. We also currently don't have a devlink between
it and the actual reset consumer. Suppress sysfs bind attributes so that
user-space can't unbind the device because - as of now - it will cause a
use-after-free splat from any user that puts the reset control handle.

Fixes: cee544a40e44 ("reset: gpio: Add GPIO-based reset controller")
Cc: stable@vger.kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
reset: brcmstb: Enable reset drivers for ARCH_BCM2835 2025-08-20T16:30:25+00:00 Peter Robinson pbrobinson@gmail.com 2025-06-30T17:52:58+00:00 e285cdb9d2e4ba2e4515ae898f92e9f38be64eb3 [ Upstream commit 1d99f92f71b6b4b2eee776562c991428490f71ef ] The BRCMSTB and BRCMSTB_RESCAL reset drivers are also used in the BCM2712, AKA the RPi5. The RPi platforms have typically used the ARCH_BCM2835, and the PCIe support for this SoC can use this config which depends on these drivers so enable building them when just that arch option is enabled to ensure the platform works as expected. Signed-off-by: Peter Robinson <pbrobinson@gmail.com> Acked-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://lore.kernel.org/r/20250630175301.846082-1-pbrobinson@gmail.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 1d99f92f71b6b4b2eee776562c991428490f71ef ]

The BRCMSTB and BRCMSTB_RESCAL reset drivers are also
used in the BCM2712, AKA the RPi5. The RPi platforms
have typically used the ARCH_BCM2835, and the PCIe
support for this SoC can use this config which depends
on these drivers so enable building them when just that
arch option is enabled to ensure the platform works as
expected.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20250630175301.846082-1-pbrobinson@gmail.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
reset: rzg2l-usbphy-ctrl: Assign proper of node to the allocated device 2025-01-23T16:22:52+00:00 Claudiu Beznea claudiu.beznea.uj@bp.renesas.com 2024-11-19T08:55:54+00:00 40c28d1a0ac49f282cbd7a56a2369a5fdbadb557 [ Upstream commit 1f8af9712413f456849fdf3f3a782cbe099476d7 ] The platform device named "rzg2l-usb-vbus-regulator", allocated by the rzg2l-usbphy-ctrl driver, is used to instantiate a regulator driver. This regulator driver is associated with a device tree (DT) node, which is a child of the rzg2l-usbphy-ctrl DT node. The regulator's DT node allows consumer nodes to reference the regulator and configure the regulator as needed. Starting with commit cd7a38c40b23 ("regulator: core: do not silently ignore provided init_data") the struct regulator_dev::dev::of_node is no longer populated using of_node_get(config->of_node) if the regulator does not provide init_data. Since the rzg2l-usb-vbus-regulator does not provide init_data, this behaviour causes the of_find_regulator_by_node() function to fails, resulting in errors when attempting to request the regulator. To fix this issue, call device_set_of_node_from_dev() for the "rzg2l-usb-vbus-regulator" platform device. Fixes: 84fbd6198766 ("regulator: Add Renesas RZ/G2L USB VBUS regulator driver") Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20241119085554.1035881-1-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 1f8af9712413f456849fdf3f3a782cbe099476d7 ]

The platform device named "rzg2l-usb-vbus-regulator", allocated by
the rzg2l-usbphy-ctrl driver, is used to instantiate a regulator driver.
This regulator driver is associated with a device tree (DT) node, which
is a child of the rzg2l-usbphy-ctrl DT node. The regulator's DT node allows
consumer nodes to reference the regulator and configure the regulator as
needed.

Starting with commit cd7a38c40b23 ("regulator: core: do not silently ignore
provided init_data") the struct regulator_dev::dev::of_node is no longer
populated using of_node_get(config->of_node) if the regulator does not
provide init_data. Since the rzg2l-usb-vbus-regulator does not provide
init_data, this behaviour causes the of_find_regulator_by_node() function
to fails, resulting in errors when attempting to request the regulator.

To fix this issue, call device_set_of_node_from_dev() for the
"rzg2l-usb-vbus-regulator" platform device.

Fixes: 84fbd6198766 ("regulator: Add Renesas RZ/G2L USB VBUS regulator driver")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20241119085554.1035881-1-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
reset: starfive: jh71x0: Fix accessing the empty member on JH7110 SoC 2024-09-30T12:24:37+00:00 Changhuang Liang changhuang.liang@starfivetech.com 2024-09-25T11:24:42+00:00 2cf59663660799ce16f4dfbed97cdceac7a7fa11 data->asserted will be NULL on JH7110 SoC since commit 82327b127d41 ("reset: starfive: Add StarFive JH7110 reset driver") was added. Add the judgment condition to avoid errors when calling reset_control_status on JH7110 SoC. Fixes: 82327b127d41 ("reset: starfive: Add StarFive JH7110 reset driver") Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com> Acked-by: Hal Feng <hal.feng@starfivetech.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20240925112442.1732416-1-changhuang.liang@starfivetech.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> 
data->asserted will be NULL on JH7110 SoC since commit 82327b127d41
("reset: starfive: Add StarFive JH7110 reset driver") was added. Add
the judgment condition to avoid errors when calling reset_control_status
on JH7110 SoC.

Fixes: 82327b127d41 ("reset: starfive: Add StarFive JH7110 reset driver")
Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Acked-by: Hal Feng <hal.feng@starfivetech.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20240925112442.1732416-1-changhuang.liang@starfivetech.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
reset: npcm: convert comma to semicolon 2024-09-30T12:17:13+00:00 Yan Zhen yanzhen@vivo.com 2024-09-09T06:12:58+00:00 e7b71bf181d03b4835e2d424fa587f4db2438fb2 Replace a comma between expression statements by a semicolon. Signed-off-by: Yan Zhen <yanzhen@vivo.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20240909061258.2246292-1-yanzhen@vivo.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> 
Replace a comma between expression statements by a semicolon.

Signed-off-by: Yan Zhen <yanzhen@vivo.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20240909061258.2246292-1-yanzhen@vivo.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
reset: eyeq: add platform driver 2024-09-02T10:12:41+00:00 Théo Lebrun theo.lebrun@bootlin.com 2024-07-30T16:06:23+00:00 487b1b32e317b85c2948eb4013f3e089a0433d49 Add Mobileye EyeQ reset controller driver, for EyeQ5, EyeQ6L and EyeQ6H SoCs. Instances belong to a shared register region called OLB and gets spawned as auxiliary device to the platform driver for clock. There is one OLB instance for EyeQ5 and EyeQ6L. There are seven OLB instances on EyeQ6H; three have a reset controller embedded: - West and east get handled by the same compatible. - Acc (accelerator) is another one. Each instance vary in the number and types of reset domains. Instances with single domain expect a single cell, others two. Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com> Link: https://lore.kernel.org/r/20240730-mbly-reset-v2-2-00b870a6a2ff@bootlin.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> 
Add Mobileye EyeQ reset controller driver, for EyeQ5, EyeQ6L and EyeQ6H
SoCs. Instances belong to a shared register region called OLB and gets
spawned as auxiliary device to the platform driver for clock.

There is one OLB instance for EyeQ5 and EyeQ6L. There are seven OLB
instances on EyeQ6H; three have a reset controller embedded:
 - West and east get handled by the same compatible.
 - Acc (accelerator) is another one.

Each instance vary in the number and types of reset domains.
Instances with single domain expect a single cell, others two.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240730-mbly-reset-v2-2-00b870a6a2ff@bootlin.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
reset: reset-meson: Add support for Amlogic T7 SoC reset controller 2024-09-02T10:09:17+00:00 Zelong Dong zelong.dong@amlogic.com 2024-04-22T11:11:44+00:00 b062ef2907a2f2054d7b3f84712e12ace42ee3f1 There are 7 sets of Reset Source in Amlogic T7 SoC reset controller, and the offset between base and level registers is 0x40. Add a new compatible string and struct meson_reset_param to support the reset controller on T7 SoC. Signed-off-by: Zelong Dong <zelong.dong@amlogic.com> Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20240422-t7-reset-v2-2-cb82271d3296@amlogic.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> 
There are 7 sets of Reset Source in Amlogic T7 SoC reset controller,
and the offset between base and level registers is 0x40.
Add a new compatible string and struct meson_reset_param to support
the reset controller on T7 SoC.

Signed-off-by: Zelong Dong <zelong.dong@amlogic.com>
Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240422-t7-reset-v2-2-cb82271d3296@amlogic.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
reset: core: add get_device()/put_device on rcdev 2024-09-02T10:02:41+00:00 Clément Léger clement.leger@bootlin.com 2024-08-08T15:46:56+00:00 a05f87270e9013bf8ce37efe70c8cc3e243931cb Since the rcdev structure is allocated by the reset controller drivers themselves, they need to exists as long as there is a consumer. A call to module_get() is already existing but that does not work when using device-tree overlays. In order to guarantee that the underlying reset controller device does not vanish while using it, add a get_device() call when retrieving a reset control from a reset controller device and a put_device() when releasing that control. Signed-off-by: Clément Léger <clement.leger@bootlin.com> Signed-off-by: Herve Codina <herve.codina@bootlin.com> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240808154658.247873-8-herve.codina@bootlin.com Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> 
Since the rcdev structure is allocated by the reset controller drivers
themselves, they need to exists as long as there is a consumer. A call to
module_get() is already existing but that does not work when using
device-tree overlays. In order to guarantee that the underlying reset
controller device does not vanish while using it, add a get_device() call
when retrieving a reset control from a reset controller device and a
put_device() when releasing that control.

Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240808154658.247873-8-herve.codina@bootlin.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
reset: lpc18xx: simplify with devm_clk_get_enabled() 2024-09-02T09:56:15+00:00 Krzysztof Kozlowski krzysztof.kozlowski@linaro.org 2024-08-25T14:14:28+00:00 0fa8ce76b713a31f6aef2f88d08eee74d7d3d8a7 Use devm_clk_get_enabled() to drop clock prepare/unprepare parts and make the code simpler. Change to dev_err_probe() in handling reset_controller_register() error to make it even simpler. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Vladimir Zapolskiy <vz@mleia.com> Link: https://lore.kernel.org/r/20240825-reset-cleanup-scoped-v1-5-03f6d834f8c0@linaro.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> 
Use devm_clk_get_enabled() to drop clock prepare/unprepare parts and
make the code simpler.  Change to dev_err_probe() in handling
reset_controller_register() error to make it even simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/r/20240825-reset-cleanup-scoped-v1-5-03f6d834f8c0@linaro.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
reset: lpc18xx: simplify with dev_err_probe() 2024-09-02T09:51:54+00:00 Krzysztof Kozlowski krzysztof.kozlowski@linaro.org 2024-08-25T14:14:27+00:00 ece222e91f2fb818fd01ff2754cf3b1d6f2bf411 Use dev_err_probe() to avoid dmesg flood on actual defer. This makes the code also simpler. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Vladimir Zapolskiy <vz@mleia.com> Link: https://lore.kernel.org/r/20240825-reset-cleanup-scoped-v1-4-03f6d834f8c0@linaro.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> 
Use dev_err_probe() to avoid dmesg flood on actual defer.  This makes
the code also simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/r/20240825-reset-cleanup-scoped-v1-4-03f6d834f8c0@linaro.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>