kernel/linux.git/drivers/mfd, branch linux-5.9.y

mfd: sprd: Add wakeup capability for PMIC IRQ

2020-11-18T18:22:15+00:00

commit a75bfc824a2d33f57ebdc003bfe6b7a9e11e9cb9 upstream. When changing to use suspend-to-idle to save power, the PMIC irq can not wakeup the system due to lack of wakeup capability, which will cause the sub-irqs (such as power key) of the PMIC can not wake up the system. Thus we can add the wakeup capability for PMIC irq to solve this issue, as well as removing the IRQF_NO_SUSPEND flag to allow PMIC irq to be a wakeup source. Reported-by: Chunyan Zhang Signed-off-by: Baolin Wang Tested-by: Chunyan Zhang Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman

mfd: sm501: Fix leaks in probe()

2020-10-29T09:11:32+00:00

[ Upstream commit 8ce24f8967df2836b4557a23e74dc4bb098249f1 ] This code should clean up if sm501_init_dev() fails. Fixes: b6d6454fdb66 ("[PATCH] mfd: SM501 core driver") Signed-off-by: Dan Carpenter Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

mfd: syscon: Don't free allocated name for regmap_config

2020-10-29T09:11:32+00:00

[ Upstream commit 529a1101212a785c5df92c314b0e718287150c3b ] The name allocated for the regmap_config structure is freed pretty early, right after the registration of the MMIO region. Unfortunately, that doesn't follow the life cycle that debugfs expects, as it can access the name field long after the free has occurred. Move the free on the error path, and keep it forever otherwise. Fixes: e15d7f2b81d2 ("mfd: syscon: Use a unique name with regmap_config") Signed-off-by: Marc Zyngier Signed-off-by: Lee Jones Signed-off-by: Sasha Levin

Merge tag 'mfd-fixes-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2020-08-28T17:15:33+00:00

Pull MFD fixes from Lee Jones: - fix double free - handle devicetree disabled devices gracefully * tag 'mfd-fixes-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: mfd: mfd-core: Ensure disabled devices are ignored without error mfd: core: Fix double-free in mfd_remove_devices_fn()

mfd: mfd-core: Ensure disabled devices are ignored without error

2020-08-28T08:51:41+00:00

Commit e49aa9a9bd22 ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes") changed the semantics for disabled devices in mfd_add_device(). Instead of silently ignoring a disabled child device, an error was returned. On receipt of the error mfd_add_devices() the precedes to remove *all* child devices and returns an all-failed error to the caller, which will inevitably fail the parent device as well. This patch reverts back to the old semantics and ignores child devices which are disabled in Device Tree. Fixes: e49aa9a9bd22 ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes") Reported-by: Icenowy Zheng Tested-by: Icenowy Zheng Signed-off-by: Lee Jones

mfd: core: Fix double-free in mfd_remove_devices_fn()

2020-08-24T13:23:55+00:00

The pdev.mfd_cell is released by platform_device_release(), which is invoked by platform_device_unregister(). Hence mfd_remove_devices_fn() shouldn't release the cell variable. The double-free bug is reported KASAN during of MFD driver module removal. Fixes: 466a62d7642f ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes") Reported-by: Marek Szyprowski Signed-off-by: Dmitry Osipenko Signed-off-by: Lee Jones

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59+00:00

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva

Merge tag 'mfd-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2020-08-15T15:09:38+00:00

Pull MFD updates from Lee Jones: "Core Frameworks - Make better attempt at matching device with the correct OF node - Allow batch removal of hierarchical sub-devices New Drivers - Add STM32 Clocksource driver - Add support for Khadas System Control Microcontroller Driver Removal - Remove unused driver for TI's SMSC ECE1099 New Device Support - Add support for Intel Emmitsburg PCH to Intel LPSS PCI - Add support for Intel Tiger Lake PCH-H to Intel LPSS PCI - Add support for Dialog DA revision to Dialog DA9063 New Functionality - Add support for AXP803 to be probed by I2C Fix-ups - Numerous W=1 warning fixes - Device Tree changes (stm32-lptimer, gateworks-gsc, khadas,mcu, stmfx, cros-ec, j721e-system-controller) - Enabled Regmap 'fast I/O' in stm32-lptimer - Change BUG_ON to WARN_ON in arizona-core - Remove superfluous code/initialisation (madera, max14577) - Trivial formatting/spelling issues (madera-core, madera-i2c, da9055, max77693-private) - Switch to of_platform_populate() in sprd-sc27xx-spi - Expand out set/get brightness/pwm macros in lm3533-ctrlbank - Disable IRQs on suspend in motorola-cpcap - Clean-up error handling in intel_soc_pmic_mrfld - Ensure correct removal order of sub-devices in madera - Many s/HTTP/HTTPS/ link changes - Ensure name used with Regmap is unique in syscon Bug Fixes - Properly 'put' clock on unbind and error in arizona-core - Fix revision handling in da9063 - Fix 'assignment of read-only location' error in kempld-core - Avoid using the Regmap API when atomic in rn5t618 - Redefine volatile register description in rn5t618 - Use locking to protect event handler in dln2" * tag 'mfd-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (76 commits) mfd: syscon: Use a unique name with regmap_config mfd: Replace HTTP links with HTTPS ones mfd: dln2: Run event handler loop under spinlock mfd: madera: Improve handling of regulator unbinding mfd: mfd-core: Add mechanism for removal of a subset of children mfd: intel_soc_pmic_mrfld: Simplify the return expression of intel_scu_ipc_dev_iowrite8() mfd: max14577: Remove redundant initialization of variable current_bits mfd: rn5t618: Fix caching of battery related registers mfd: max77693-private: Drop a duplicated word mfd: da9055: pdata.h: Drop a duplicated word mfd: rn5t618: Make restart handler atomic safe mfd: kempld-core: Fix 'assignment of read-only location' error mfd: axp20x: Allow the AXP803 to be probed by I2C mfd: da9063: Add support for latest DA silicon revision mfd: da9063: Fix revision handling to correctly select reg tables dt-bindings: mfd: st,stmfx: Remove I2C unit name dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller mfd: motorola-cpcap: Disable interrupt for suspend mfd: smsc-ece1099: Remove driver mfd: core: Add OF_MFD_CELL_REG() helper ...

mfd: syscon: Use a unique name with regmap_config

2020-08-13T06:51:03+00:00

The DT node full name is currently being used in regmap_config which in turn is used to create the regmap debugfs directories. This name however is not guaranteed to be unique and the regmap debugfs registration can fail in the cases where the syscon nodes have the same unit-address but are present in different DT node hierarchies. Replace this logic using the syscon reg resource address instead (inspired from logic used while creating platform devices) to ensure a unique name is given for each syscon. Signed-off-by: Suman Anna Reviewed-by: Arnd Bergmann Signed-off-by: Lee Jones

mfd: Replace HTTP links with HTTPS ones

2020-08-13T06:50:59+00:00

Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov Acked-by: Rob Herring Signed-off-by: Lee Jones