[PATCH 00/28] mfd: Assorted resource lifetime, teardown, and error-handling fixes

[Lee Jones]

These issues were reported by Sashiko.

This series addresses a collection of resource lifetime, teardown
ordering, uninitialised memory, and error-handling issues across MFD
drivers (along with two related patches touching i2c-cgbc and the
ti_am335x_tscadc child drivers):

- Resource teardown & lifecycle fixes:
  Ensure IRQ domains, chained/parent interrupts, GPIO GSIs, delayed/reset
  work items, PM notifiers, system power-off handlers, sysfs groups, MFD
  child devices, and global singleton pointers are properly unregistered
  or managed via devres on probe failure and driver unbind (ls2kbmc,
  ioc3, intel-lpss, max8907, twl-core, loongson-se, abx500-core,
  ab8500-core, tps65217, mt6397/mt6358).

- DMA, URB, & hardware error handling:
  Allocate USB transfer buffers on the heap rather than the stack, avoid
  resubmitting interrupt URBs on endpoint stall (-EPIPE), zero-initialise
  command and version buffers, and validate DMA masks, engine IDs, and
  polled transfer status (nct6694, cgbc, i2c-cgbc, loongson-se).

- MFD cell descriptor & driver-data clean-ups:
  Avoid storing stack frame addresses in MFD cell platform_data and
  resource pointers, and retrieve parent driver data directly via
  dev_get_drvdata() in the ti_am335x_tscadc child drivers (ls2kbmc,
  bd96801, db8500-prcmu, ti_am335x_tscadc).

Lee Jones (28):
  mfd: nct6694: Allocate USB DMA buffers with kzalloc_obj()
  mfd: ls2kbmc: Unregister GPIO GSI via devm_add_action_or_reset()
  mfd: ls2kbmc: Cancel reset work on teardown via devm_work_autocancel()
  mfd: ls2kbmc: Allocate simplefb platform_data on the heap
  mfd: bd96801: Allocate watchdog IRQ resource on the heap
  mfd: ti_am335x_tscadc: Retrieve parent driver data via
    dev_get_drvdata()
  mfd: db8500-prcmu: Make AB8500 cell and IRQ resource static
  mfd: nct6694: Do not resubmit interrupt URB on endpoint stall (-EPIPE)
  mfd: cgbc: Zero-initialise version buffer in cgbc_get_version()
  mfd: ioc3: Request parent IRQ via request_irq() and free before domain
    removal
  mfd: intel-lpss: Remove registered MFD child devices on probe failure
  mfd: max8907: Manage power-off handler via
    devm_register_sys_off_handler()
  mfd: twl-core: Clear pm_power_off callback in twl_remove()
  mfd: twl-core: Clear twl_priv pointer on teardown and probe failure
  mfd: loongson-se: Check return value of dma_set_mask_and_coherent()
  mfd: loongson-se: Zero-initialise controller command structures
  mfd: loongson-se: Reinitialise completions and wait uninterruptibly
    for commands
  mfd: loongson-se: Zero-allocate driver data and initialise engine
    completions in probe
  mfd: loongson-se: Prevent out-of-bounds engine access in
    se_irq_handler()
  mfd: loongson-se: Stop controller and mask interrupts on teardown and
    shutdown
  mfd: loongson-se: Validate engine ID, DMA buffer size, and IRQ
    registration
  mfd: abx500-core: Unregister device ops on devm release
  mfd: ab8500-core: Register sysfs attribute groups via
    devm_device_add_group()
  mfd: tps65217: Manage IRQ domain teardown via devres
  mfd: mt6397: Manage IRQ domain lifecycle with devres
  mfd: mt6397: Unregister PM notifier on probe failure and unbind
  i2c: cgbc: Propagate hardware errors when polling read status
  mfd: ti_am335x_tscadc: Remove redundant ti_tscadc_dev_get() helper

 drivers/i2c/busses/i2c-cgbc.c             |  27 ++++--
 drivers/iio/adc/ti_am335x_adc.c           |   2 +-
 drivers/input/touchscreen/ti_am335x_tsc.c |   2 +-
 drivers/mfd/ab8500-core.c                 |  11 +--
 drivers/mfd/abx500-core.c                 |  29 +++---
 drivers/mfd/cgbc-core.c                   |   2 +-
 drivers/mfd/db8500-prcmu.c                |   8 +-
 drivers/mfd/intel-lpss.c                  |   1 +
 drivers/mfd/ioc3.c                        |  32 ++++---
 drivers/mfd/loongson-se.c                 | 110 +++++++++++++++++-----
 drivers/mfd/ls2k-bmc-core.c               |  27 ++++--
 drivers/mfd/max8907.c                     |  28 ++++--
 drivers/mfd/mt6358-irq.c                  |  17 +++-
 drivers/mfd/mt6397-core.c                 |   4 +-
 drivers/mfd/mt6397-irq.c                  |  31 +++++-
 drivers/mfd/nct6694.c                     |  23 +++--
 drivers/mfd/rohm-bd96801.c                |  11 ++-
 drivers/mfd/ti_am335x_tscadc.c            |   7 +-
 drivers/mfd/tps65217.c                    |  40 ++++----
 drivers/mfd/twl-core.c                    |  45 +++++----
 include/linux/mfd/loongson-se.h           |   8 +-
 include/linux/mfd/ti_am335x_tscadc.h      |   7 --
 22 files changed, 327 insertions(+), 145 deletions(-)

-- 
2.56.0.218.g1ec904b173-goog