Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Currently, memsetting and kfreeing the device is bad behaviour.  The
device will have a reference count of 1 and hence can cause trouble
because it has kfree'd.  Proper way to handle a failed device_register is
to call put_device right after it fails.

Signed-off-by: Levente Kurusa <levex@linux.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

fix build: needs vmalloc.h

Cc: Jan Kara <jack@suse.cz>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

get_vaddr_frames() is used by relatively rare drivers so hide it and the
related functions behind a config option that is selected only by drivers
that need the infrastructure.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Convert g2d_userptr_get_dma_addr() to pin pages using get_vaddr_frames().
This removes the knowledge about vmas and mmap_sem locking from exynos
driver.  Also it fixes a problem that the function has been mapping user
provided address without holding mmap_sem.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Conversion to the use of pinned pfns made some functions unused.  Remove
them.  Also there's no need to lock mmap_sem in __buf_prepare() anymore.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Convert vb2_dc_get_userptr() to use frame vector infrastructure.  When we
are doing that there's no need to allocate page array and some code can be
simplified.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Convert vb2_vmalloc_get_userptr() to use frame vector infrastructure.
When we are doing that there's no need to allocate page array and some
code can be simplified.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Simplify the VMA code by using frame_vector_pages() & friends on VB2.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Provide simple helper functions to map virtual address range into an array
of pfns / pages.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Convert omap_vout_uservirt_to_phys() to use get_vaddr_pfns() instead of
hand made mapping of virtual address to physical address.  Also the
function leaked page reference from get_user_pages() so fix that by
properly release the reference when omap_vout_buffer_release() is called.

[hans.verkuil@cisco.com: remove unused struct omap_vout_device *vout variable]
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

use kvfree(), per Sergey

Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Provide new function get_vaddr_frames().  This function maps virtual
addresses from given start and fills given array with page frame numbers
of the corresponding pages.  If given start belongs to a normal vma, the
function grabs reference to each of the pages to pin them in memory.  If
start belongs to VM_IO | VM_PFNMAP vma, we don't touch page structures.
Caller must make sure pfns aren't reused for anything else while he is
using them.

This function is created for various drivers to simplify handling of their
buffers.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

The seq_<foo> function return values were frequently misused.

See: commit 1f33c41c

 ("seq_file: Rename seq_overflow() to
     seq_has_overflowed() and make public")

All uses of these return values have been removed, so convert the
return types to void.

Miscellanea:

o Move seq_put_decimal_<type> and seq_escape prototypes closer the
  other seq_vprintf prototypes
o Reorder seq_putc and seq_puts to return early on overflow
o Add argument names to seq_vprintf and seq_printf
o Update the seq_escape kernel-doc
o Convert a couple of leading spaces to tabs in seq_escape

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

gcc-4.4.4 (at least) isn't able to handle the mixture of anonymous unions
and declaration-time intializers.  Work around this.

net/netfilter/ipset/ip_set_hash_netnet.c: In function 'hash_netnet4_uadt':
net/netfilter/ipset/ip_set_hash_netnet.c:163: error: unknown field 'cidr' specified in initializer
net/netfilter/ipset/ip_set_hash_netnet.c:163: warning: missing braces around initializer
net/netfilter/ipset/ip_set_hash_netnet.c:163: warning: (near initialization for 'e.<anonymous>.ip')
...

Fixes: ea53ac5b

 ("netfilter: ipset: Add hash:net,net module to kernel.)
Cc: Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

gcc-4.4.4:

cc1: warnings being treated as errors
drivers/gpu/drm/i915/intel_tv.c: In function 'intel_tv_detect':
drivers/gpu/drm/i915/intel_tv.c:1319: error: 'type' may be used uninitialized in this function

Cc: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

gcc-4.4.4:

cc1: warnings being treated as errors
drivers/gpu/drm/i915/intel_sprite.c: In function 'intel_check_sprite_plane':
drivers/gpu/drm/i915/intel_sprite.c:767: error: 'src_x' may be used uninitialized in this function
drivers/gpu/drm/i915/intel_sprite.c:767: error: 'src_y' may be used uninitialized in this function
drivers/gpu/drm/i915/intel_sprite.c:767: error: 'src_w' may be used uninitialized in this function
drivers/gpu/drm/i915/intel_sprite.c:767: error: 'src_h' may be used uninitialized in this function

Fixes: 96d61a7f

 ("drm/i915: split intel_update_plane into check() and commit()")
Cc: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Conflicts:
	arch/s390/include/asm/page.h
	arch/s390/mm/pgtable.c
	arch/x86/Kconfig
	arch/x86/kernel/machine_kexec_64.c
	drivers/staging/android/lowmemorykiller.c
	fs/ocfs2/journal.c
	kernel/printk/printk.c
	mm/memblock.c
	mm/slab_common.c

Conflicts:
	drivers/hwtracing/coresight/coresight-etm3x.c
	drivers/hwtracing/coresight/coresight-etm4x.c
	drivers/hwtracing/coresight/coresight-replicator-qcom.c

Conflicts:
	drivers/staging/media/lirc/lirc_parallel.c

Conflicts:
	drivers/firmware/efi/efi.c
	fs/libfs.c