[PATCH 00/20 v4] staging: gasket: sundry fixes and fixups

[Todd Poynor]

From: Todd Poynor <toddpoynor@xxxxxxxxxx>

Various fixes mainly from the chromium review of the gasket and apex
drivers.  More to come.

Todd Poynor (20):
  staging: gasket: allow compile for ARM64 in Kconfig
  staging: gasket: gasket_enable_dev remove unnecessary variable
  staging: gasket: remove code for no physical device
  staging: gasket: fix class create bug handling
  staging: gasket: remove unnecessary code in coherent allocator
  staging: gasket: don't treat no device reset callback as an error
  staging: gasket: gasket_mmap return error instead of valid BAR index
  staging: gasket: apex_clock_gating simplify logic, reduce indentation
  staging: gasket: gasket page table functions use bool return type
  staging: gasket: remove else clause after return in if clause
  staging: gasket: fix comment syntax in apex.h
  staging: gasket: remove unnecessary parens in page table code
  staging: gasket: gasket_mmap use PAGE_MASK
  staging: gasket: remove extra parens in gasket_write_mappable_regions
  staging: gasket: fix multi-line comment syntax in gasket_core.h
  staging: gasket: always allow root open for write
  staging: gasket: top ioctl handler add __user annotations
  staging: gasket: apex ioctl add __user annotations
  staging: gasket: common ioctl dispatcher add __user annotations
  staging: gasket: common ioctls add __user annotations

Patches changed from v3 in v4:
  staging: gasket: remove X86 Kconfig restriction
     Rename: staging: gasket: allow compile for ARM64 in Kconfig
     Restore existing "depends on" for X86_64, add ARM64.  Only compile for
     64-bit architectures known to work with this driver.
  staging: gasket: always allow root open for write
     Fold in patch to convert apex_ioctl_check_permissions to return bool
     Convert gasket_ioctl_check_permissions to use bool types.
  staging: gasket: apex_ioctl_check_permissions use bool return type
     Folded into above patch.
  staging: gasket: annotate ioctl arg with __user
     Split up into new patches:
        staging: gasket: top ioctl handler add __user annotations
	staging: gasket: apex ioctl add __user annotations
	staging: gasket: common ioctl dispatcher add __user annotations
	staging: gasket: common ioctls add __user annotations
     Convert various uses of void * to actual type.
     Minor formatting and naming changes.
     Drop Reviewed-By: Dmitry Torokhov due to changes since review.

Patches unchanged from v3 in v4:
  staging: gasket: gasket_enable_dev remove unnecessary variable
  staging: gasket: remove code for no physical device
  staging: gasket: fix class create bug handling
  staging: gasket: remove unnecessary code in coherent allocator
  staging: gasket: don't treat no device reset callback as an error
  staging: gasket: gasket_mmap return error instead of valid BAR index
  staging: gasket: apex_clock_gating simplify logic, reduce indentation
  staging: gasket: gasket page table functions use bool return type
  staging: gasket: remove else clause after return in if clause
  staging: gasket: fix comment syntax in apex.h
  staging: gasket: remove unnecessary parens in page table code
  staging: gasket: gasket_mmap use PAGE_MASK
  staging: gasket: remove extra parens in gasket_write_mappable_regions
  staging: gasket: fix multi-line comment syntax in gasket_core.h

Patches removed from v3 in v4 (already merged to staging-next):
  staging: gasket: fix typo in apex_enter_reset
  staging: gasket: fix typo in gasket_core.h comments
  staging: gasket: whitespace fix in gasket_page_table_init
  staging: gasket: remove driver registration on class creation failure
  staging: gasket: hold mutex on gasket driver unregistration
  staging: gasket: Return EBUSY on mapping create when already in use
  staging: gasket: Remove stale pointers on error allocating attr array
  staging: gasket: convert gasket_mmap_has_permissions to bool return
  staging: gasket: fix gasket_wait_with_reschedule timeout return code
  staging: gasket: gasket_wait_with_reschedule use msleep
  staging: gasket: gasket_wait_with_reschedule simplify logic
  staging: gasket: gasket_wait_with_reschedule use 32 bits of retry
  staging: gasket: bail out of reset sequence on device callback error
  staging: gasket: drop gasket_cdev_get_info, use container_of

 drivers/staging/gasket/Kconfig             |   2 +-
 drivers/staging/gasket/apex.h              |   7 +-
 drivers/staging/gasket/apex_driver.c       |  73 +++++------
 drivers/staging/gasket/gasket_core.c       |  44 +++----
 drivers/staging/gasket/gasket_core.h       |  10 +-
 drivers/staging/gasket/gasket_ioctl.c      | 144 +++++++++++----------
 drivers/staging/gasket/gasket_ioctl.h      |   4 +-
 drivers/staging/gasket/gasket_page_table.c |  64 +++++----
 drivers/staging/gasket/gasket_page_table.h |   8 +-
 9 files changed, 174 insertions(+), 182 deletions(-)

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2.18.0.233.g985f88cf7e-goog