linux.git/drivers/tty/serial, branch v4.3-rc2

Merge tag 'tty-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2015-09-09T18:27:01+00:00

Pull tty driver reverts from Greg KH:
 "Here are some reverts for some tty patches (specifically the pl011
  driver) that ended up breaking a bunch of machines (i.e. almost all
  of the ones with this chip).

  People are working on a fix for this, but in the meantime, it's best
  to just revert all 5 patches to restore people's serial consoles.

  These reverts have been in linux-next for many days now"

* tag 'tty-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "uart: pl011: Rename regs with enumeration"
  Revert "uart: pl011: Introduce register accessor"
  Revert "uart: pl011: Introduce register look up table"
  Revert "uart: pl011: Improve LCRH register access decision"
  Revert "uart: pl011: Add support to ZTE ZX296702 uart"

Merge tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

2015-09-08T21:35:59+00:00

Pull libnvdimm updates from Dan Williams:
 "This update has successfully completed a 0day-kbuild run and has
  appeared in a linux-next release.  The changes outside of the typical
  drivers/nvdimm/ and drivers/acpi/nfit.[ch] paths are related to the
  removal of IORESOURCE_CACHEABLE, the introduction of memremap(), and
  the introduction of ZONE_DEVICE + devm_memremap_pages().

  Summary:

   - Introduce ZONE_DEVICE and devm_memremap_pages() as a generic
     mechanism for adding device-driver-discovered memory regions to the
     kernel's direct map.

     This facility is used by the pmem driver to enable pfn_to_page()
     operations on the page frames returned by DAX ('direct_access' in
     'struct block_device_operations').

     For now, the 'memmap' allocation for these "device" pages comes
     from "System RAM".  Support for allocating the memmap from device
     memory will arrive in a later kernel.

   - Introduce memremap() to replace usages of ioremap_cache() and
     ioremap_wt().  memremap() drops the __iomem annotation for these
     mappings to memory that do not have i/o side effects.  The
     replacement of ioremap_cache() with memremap() is limited to the
     pmem driver to ease merging the api change in v4.3.

     Completion of the conversion is targeted for v4.4.

   - Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem
     driver, update the VFS DAX implementation and PMEM api to provide
     persistence guarantees for kernel operations on a DAX mapping.

   - Convert the ACPI NFIT 'BLK' driver to map the block apertures as
     cacheable to improve performance.

   - Miscellaneous updates and fixes to libnvdimm including support for
     issuing "address range scrub" commands, clarifying the optimal
     'sector size' of pmem devices, a clarification of the usage of the
     ACPI '_STA' (status) property for DIMM devices, and other minor
     fixes"

* tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (34 commits)
  libnvdimm, pmem: direct map legacy pmem by default
  libnvdimm, pmem: 'struct page' for pmem
  libnvdimm, pfn: 'struct page' provider infrastructure
  x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB
  add devm_memremap_pages
  mm: ZONE_DEVICE for "device memory"
  mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h
  dax: drop size parameter to ->direct_access()
  nd_blk: change aperture mapping from WC to WB
  nvdimm: change to use generic kvfree()
  pmem, dax: have direct_access use __pmem annotation
  dax: update I/O path to do proper PMEM flushing
  pmem: add copy_from_iter_pmem() and clear_pmem()
  pmem, x86: clean up conditional pmem includes
  pmem: remove layer when calling arch_has_wmb_pmem()
  pmem, x86: move x86 PMEM API to new pmem.h header
  libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option
  pmem: switch to devm_ allocations
  devres: add devm_memremap
  libnvdimm, btt: write and validate parent_uuid
  ...

Revert "uart: pl011: Rename regs with enumeration"

2015-09-04T16:14:43+00:00

This reverts commit 534e14e2293d8cd714b94513686228453b21fae2 as with
this patch the serial console is broken on lots of platforms.

Reported-by: Marc Zyngier 
Cc: Jun Nie 
Acked-by: Will Deacon 
Tested-by: Will Deacon 
Signed-off-by: Greg Kroah-Hartman

Revert "uart: pl011: Introduce register accessor"

2015-09-04T16:14:43+00:00

This reverts commit 7b753f318d1456c8e7740f3bd96d1dbb362d5449 as with
this patch the serial console is broken on lots of platforms.

Reported-by: Marc Zyngier 
Cc: Jun Nie 
Acked-by: Will Deacon 
Tested-by: Will Deacon 
Signed-off-by: Greg Kroah-Hartman

Revert "uart: pl011: Introduce register look up table"

2015-09-04T16:14:42+00:00

This reverts commit 2c096a9eedc6841d3610545f4e6c3d72bd0962be as with
this patch the serial console is broken on lots of platforms.

Reported-by: Marc Zyngier 
Cc: Jun Nie 
Acked-by: Will Deacon 
Tested-by: Will Deacon 
Signed-off-by: Greg Kroah-Hartman

Revert "uart: pl011: Improve LCRH register access decision"

2015-09-04T16:14:42+00:00

This reverts commit 09dcc7dfc05b31bf0bbcd1511cd1a2644908d5c8 as with
this patch the serial console is broken on lots of platforms.

Reported-by: Marc Zyngier 
Cc: Jun Nie 
Acked-by: Will Deacon 
Tested-by: Will Deacon 
Signed-off-by: Greg Kroah-Hartman

Revert "uart: pl011: Add support to ZTE ZX296702 uart"

2015-09-04T16:14:20+00:00

This reverts commit 8cd90e50d1408c65c355084b1c7f8f9085f49c6b as with
this patch the serial console is broken on lots of platforms.

Reported-by: Marc Zyngier 
Cc: Jun Nie 
Acked-by: Will Deacon 
Tested-by: Will Deacon 
Signed-off-by: Greg Kroah-Hartman

serial: imx: save and restore context in the suspend path

2015-08-15T00:23:25+00:00

This change teaches the imx serial driver to save its
context and restore it across suspend and resume path.
To do so, it introduces serial_imx_restore_context()
and serial_imx_save_context() functions. They use
a shadow set of registers to save key registers
and restore them accordingly. These functions can
be reused on other situations, when the device
context is lost.

Cc: Fabio Estevam 
Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin 
Signed-off-by: Greg Kroah-Hartman

serial: imx: allow waking up on RTSD

2015-08-15T00:23:25+00:00

This patch sets RTSDEN bit when going into idle (Stop mode).
We add the RTSDEN for the case RTS is sent from
the remote connection. This way we allow the system
to wakeup when RTS is received.

Cc: Fabio Stevam 
Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin 
Signed-off-by: Greg Kroah-Hartman

serial: imx: introduce serial_imx_enable_wakeup()

2015-08-15T00:23:25+00:00

This change is a code reorganization. Here we introduce
serial_imx_enable_wakeup() helper function to do
the job of configuring and preparing wakeup sources
on imx serial device. The idea is to allow other
parts of the code to call this function whenever
the device is known to go to idle.

Cc: Fabio Estevam 
Cc: Greg Kroah-Hartman 
Cc: Jiri Slaby 
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin 
Signed-off-by: Greg Kroah-Hartman