linux.git/drivers/mtd/devices, branch v4.2

Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block

2015-06-25T23:00:17+00:00

Pull cgroup writeback support from Jens Axboe:
 "This is the big pull request for adding cgroup writeback support.

  This code has been in development for a long time, and it has been
  simmering in for-next for a good chunk of this cycle too.  This is one
  of those problems that has been talked about for at least half a
  decade, finally there's a solution and code to go with it.

  Also see last weeks writeup on LWN:

        http://lwn.net/Articles/648292/"

* 'for-4.2/writeback' of git://git.kernel.dk/linux-block: (85 commits)
  writeback, blkio: add documentation for cgroup writeback support
  vfs, writeback: replace FS_CGROUP_WRITEBACK with SB_I_CGROUPWB
  writeback: do foreign inode detection iff cgroup writeback is enabled
  v9fs: fix error handling in v9fs_session_init()
  bdi: fix wrong error return value in cgwb_create()
  buffer: remove unusued 'ret' variable
  writeback: disassociate inodes from dying bdi_writebacks
  writeback: implement foreign cgroup inode bdi_writeback switching
  writeback: add lockdep annotation to inode_to_wb()
  writeback: use unlocked_inode_to_wb transaction in inode_congested()
  writeback: implement unlocked_inode_to_wb transaction and use it for stat updates
  writeback: implement [locked_]inode_to_wb_and_lock_list()
  writeback: implement foreign cgroup inode detection
  writeback: make writeback_control track the inode being written back
  writeback: relocate wb[_try]_get(), wb_put(), inode_{attach|detach}_wb()
  mm: vmscan: disable memcg direct reclaim stalling if cgroup writeback support is in use
  writeback: implement memcg writeback domain based throttling
  writeback: reset wb_domain->dirty_limit[_tstmp] when memcg domain size changes
  writeback: implement memcg wb_domain
  writeback: update wb_over_bg_thresh() to use wb_domain aware operations
  ...

Merge tag 'powerpc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

2015-06-24T15:46:32+00:00

Pull powerpc updates from Michael Ellerman:

- disable the 32-bit vdso when building LE, so we can build with a
64-bit only toolchain.

- EEH fixes from Gavin & Richard.

- enable the sys_kcmp syscall from Laurent.

- sysfs control for fastsleep workaround from Shreyas.

- expose OPAL events as an irq chip by Alistair.

- MSI ops moved to pci_controller_ops by Daniel.

- fix for kernel to userspace backtraces for perf from Anton.

- merge pseries and pseries_le defconfigs from Cyril.

- CXL in-kernel API from Mikey.

- OPAL prd driver from Jeremy.

- fix for DSCR handling & tests from Anshuman.

- Powernv flash mtd driver from Cyril.

- dynamic DMA Window support on powernv from Alexey.

- LLVM clang fixes & workarounds from Anton.

- reworked version of the patch to abort syscalls when transactional.

- fix the swap encoding to support 4TB, from Aneesh.

- various fixes as usual.

- Freescale updates from Scott: Highlights include more 8xx
optimizations, an e6500 hugetlb optimization, QMan device tree nodes,
t1024/t1023 support, and various fixes and cleanup.

* tag 'powerpc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (180 commits)
cxl: Fix typo in debug print
cxl: Add CXL_KERNEL_API config option
powerpc/powernv: Fix wrong IOMMU table in pnv_ioda_setup_bus_dma()
powerpc/mm: Change the swap encoding in pte.
powerpc/mm: PTE_RPN_MAX is not used, remove the same
powerpc/tm: Abort syscalls in active transactions
powerpc/iommu/ioda2: Enable compile with IOV=on and IOMMU_API=off
powerpc/include: Add opal-prd to installed uapi headers
powerpc/powernv: fix construction of opal PRD messages
powerpc/powernv: Increase opal-irqchip initcall priority
powerpc: Make doorbell check preemption safe
powerpc/powernv: pnv_init_idle_states() should only run on powernv
macintosh/nvram: Remove as unused
powerpc: Don't use gcc specific options on clang
powerpc: Don't use -mno-strict-align on clang
powerpc: Only use -mtraceback=no, -mno-string and -msoft-float if toolchain supports it
powerpc: Only use -mabi=altivec if toolchain supports it
powerpc: Fix duplicate const clang warning in user access code
vfio: powerpc/spapr: Support Dynamic DMA windows
vfio: powerpc/spapr: Register memory and define IOMMU v2
...

mtd: docg3: Fix kasprintf() usage

2015-06-17T01:58:47+00:00

kasprintf() does a dynamic memory allocation and can fail.
We have to handle that case.

Signed-off-by: Richard Weinberger 
Signed-off-by: Brian Norris

mtd: docg3: Don't leak docg3->bbt in error path

2015-06-17T01:58:47+00:00

Signed-off-by: Richard Weinberger 
Signed-off-by: Brian Norris

mtd: powernv: Add powernv flash MTD abstraction driver

2015-06-11T03:23:30+00:00

Powerpc powernv platforms allow access to certain system flash devices
through a firmwarwe interface. This change adds an mtd driver for these
flash devices.

Minor updates from Jeremy Kerr and Joel Stanley.

Signed-off-by: Cyril Bur 
Signed-off-by: Joel Stanley 
Signed-off-by: Jeremy Kerr 
Reviewed-by: Neelesh Gupta 
Signed-off-by: Michael Ellerman

writeback: separate out include/linux/backing-dev-defs.h

2015-06-02T14:33:34+00:00

With the planned cgroup writeback support, backing-dev related
declarations will be more widely used across block and cgroup;
unfortunately, including backing-dev.h from include/linux/blkdev.h
makes cyclic include dependency quite likely.

This patch separates out backing-dev-defs.h which only has the
essential definitions and updates blkdev.h to include it.  c files
which need access to more backing-dev details now include
backing-dev.h directly.  This takes backing-dev.h off the common
include dependency chain making it a lot easier to use it across block
and cgroup.

v2: fs/fat build failure fixed.

Signed-off-by: Tejun Heo 
Reviewed-by: Jan Kara 
Cc: Jens Axboe 
Signed-off-by: Jens Axboe

mtd: remove incorrect file name

2015-05-22T17:57:46+00:00

This is an example of why it doesn't make much sense to put this
information here in the first place. I don't really know what purpose it
serves.

Signed-off-by: Brian Norris

Merge tag 'v4.1-rc4' into MTD's -next

2015-05-18T17:50:43+00:00

Documentation: dt: mtd: replace "nor-jedec" binding with "jedec, spi-nor"

2015-05-15T20:04:00+00:00

In commit 8ff16cf77ce3 ("Documentation: devicetree: m25p80: add "nor-jedec"
binding"), we added a generic "nor-jedec" binding to catch all
mostly-compatible SPI NOR flash which can be detected via the READ ID
opcode (0x9F). This was discussed and reviewed at the time, however
objections have come up since then as part of this discussion:

  http://lkml.kernel.org/g/20150511224646.GJ32500@ld-irv-0074

It seems the parties involved agree that "jedec,spi-nor" does a better
job of capturing the fact that this is SPI-specific, not just any NOR
flash.

This binding was only merged for v4.1-rc1, so it's still OK to change
the naming.

At the same time, let's move the documentation to a better name.

Next up: stop referring to code (drivers/mtd/devices/m25p80.c) from the
documentation.

Signed-off-by: Brian Norris 
Cc: Marek Vasut 
Cc: Rafał Miłecki 
Cc: Rob Herring 
Cc: Pawel Moll 
Cc: Ian Campbell 
Cc: Kumar Gala 
Cc: devicetree@vger.kernel.org
Acked-by: Stephen Warren 
Acked-by: Geert Uytterhoeven 
Acked-by: Mark Rutland

mtd: m25p80: remove unused flash entries from id_table

2015-05-07T07:18:24+00:00

We had many entries that were recently added just to allow selecting
some flashes directly but were never used. They weren't providing any
special flash handling, we just needed them due to the lack of some
generic binding string.

With the introduction of "nor-jedec" (in 1103b85) they won't be needed
unless we discover some faulty flash requiring workarounds.
As explained in m25p80 DT documentation we require specifying
"nor-jedec" now as less specific compatible entry.

Signed-off-by: Rafał Miłecki 
Signed-off-by: Brian Norris