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Removal started in commit 5bbeed12bdc3 ("sparc32: drop unused
kmap_atomic_to_page"). Let's do it across the whole tree.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A previous commit introduced the new mlock2 syscall, add entries for the
MIPS architecture.
Signed-off-by: Eric B Munson <emunson@akamai.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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__GFP_WAIT was renamed for __GFP_RECLAIM and the gfpflags_allow_blocking()
helper was added.
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge second patch-bomb from Andrew Morton:
- most of the rest of MM
- procfs
- lib/ updates
- printk updates
- bitops infrastructure tweaks
- checkpatch updates
- nilfs2 update
- signals
- various other misc bits: coredump, seqfile, kexec, pidns, zlib, ipc,
dma-debug, dma-mapping, ...
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (102 commits)
ipc,msg: drop dst nil validation in copy_msg
include/linux/zutil.h: fix usage example of zlib_adler32()
panic: release stale console lock to always get the logbuf printed out
dma-debug: check nents in dma_sync_sg*
dma-mapping: tidy up dma_parms default handling
pidns: fix set/getpriority and ioprio_set/get in PRIO_USER mode
kexec: use file name as the output message prefix
fs, seqfile: always allow oom killer
seq_file: reuse string_escape_str()
fs/seq_file: use seq_* helpers in seq_hex_dump()
coredump: change zap_threads() and zap_process() to use for_each_thread()
coredump: ensure all coredumping tasks have SIGNAL_GROUP_COREDUMP
signal: remove jffs2_garbage_collect_thread()->allow_signal(SIGCONT)
signal: introduce kernel_signal_stop() to fix jffs2_garbage_collect_thread()
signal: turn dequeue_signal_lock() into kernel_dequeue_signal()
signals: kill block_all_signals() and unblock_all_signals()
nilfs2: fix gcc uninitialized-variable warnings in powerpc build
nilfs2: fix gcc unused-but-set-variable warnings
MAINTAINERS: nilfs2: add header file for tracing
nilfs2: add tracepoints for analyzing reading and writing metadata files
...
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Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: George Spelvin <linux@horizon.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: George Spelvin <linux@horizon.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hugh has pointed that compound_head() call can be unsafe in some
context. There's one example:
CPU0 CPU1
isolate_migratepages_block()
page_count()
compound_head()
!!PageTail() == true
put_page()
tail->first_page = NULL
head = tail->first_page
alloc_pages(__GFP_COMP)
prep_compound_page()
tail->first_page = head
__SetPageTail(p);
!!PageTail() == true
<head == NULL dereferencing>
The race is pure theoretical. I don't it's possible to trigger it in
practice. But who knows.
We can fix the race by changing how encode PageTail() and compound_head()
within struct page to be able to update them in one shot.
The patch introduces page->compound_head into third double word block in
front of compound_dtor and compound_order. Bit 0 encodes PageTail() and
the rest bits are pointer to head page if bit zero is set.
The patch moves page->pmd_huge_pte out of word, just in case if an
architecture defines pgtable_t into something what can have the bit 0
set.
hugetlb_cgroup uses page->lru.next in the second tail page to store
pointer struct hugetlb_cgroup. The patch switch it to use page->private
in the second tail page instead. The space is free since ->first_page is
removed from the union.
The patch also opens possibility to remove HUGETLB_CGROUP_MIN_ORDER
limitation, since there's now space in first tail page to store struct
hugetlb_cgroup pointer. But that's out of scope of the patch.
That means page->compound_head shares storage space with:
- page->lru.next;
- page->next;
- page->rcu_head.next;
That's too long list to be absolutely sure, but looks like nobody uses
bit 0 of the word.
page->rcu_head.next guaranteed[1] to have bit 0 clean as long as we use
call_rcu(), call_rcu_bh(), call_rcu_sched(), or call_srcu(). But future
call_rcu_lazy() is not allowed as it makes use of the bit and we can
get false positive PageTail().
[1] http://lkml.kernel.org/g/20150827163634.GD4029@linux.vnet.ibm.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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sleep and avoiding waking kswapd
__GFP_WAIT has been used to identify atomic context in callers that hold
spinlocks or are in interrupts. They are expected to be high priority and
have access one of two watermarks lower than "min" which can be referred
to as the "atomic reserve". __GFP_HIGH users get access to the first
lower watermark and can be called the "high priority reserve".
Over time, callers had a requirement to not block when fallback options
were available. Some have abused __GFP_WAIT leading to a situation where
an optimisitic allocation with a fallback option can access atomic
reserves.
This patch uses __GFP_ATOMIC to identify callers that are truely atomic,
cannot sleep and have no alternative. High priority users continue to use
__GFP_HIGH. __GFP_DIRECT_RECLAIM identifies callers that can sleep and
are willing to enter direct reclaim. __GFP_KSWAPD_RECLAIM to identify
callers that want to wake kswapd for background reclaim. __GFP_WAIT is
redefined as a caller that is willing to enter direct reclaim and wake
kswapd for background reclaim.
This patch then converts a number of sites
o __GFP_ATOMIC is used by callers that are high priority and have memory
pools for those requests. GFP_ATOMIC uses this flag.
o Callers that have a limited mempool to guarantee forward progress clear
__GFP_DIRECT_RECLAIM but keep __GFP_KSWAPD_RECLAIM. bio allocations fall
into this category where kswapd will still be woken but atomic reserves
are not used as there is a one-entry mempool to guarantee progress.
o Callers that are checking if they are non-blocking should use the
helper gfpflags_allow_blocking() where possible. This is because
checking for __GFP_WAIT as was done historically now can trigger false
positives. Some exceptions like dm-crypt.c exist where the code intent
is clearer if __GFP_DIRECT_RECLAIM is used instead of the helper due to
flag manipulations.
o Callers that built their own GFP flags instead of starting with GFP_KERNEL
and friends now also need to specify __GFP_KSWAPD_RECLAIM.
The first key hazard to watch out for is callers that removed __GFP_WAIT
and was depending on access to atomic reserves for inconspicuous reasons.
In some cases it may be appropriate for them to use __GFP_HIGH.
The second key hazard is callers that assembled their own combination of
GFP flags instead of starting with something like GFP_KERNEL. They may
now wish to specify __GFP_KSWAPD_RECLAIM. It's almost certainly harmless
if it's missed in most cases as other activity will wake kswapd.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching
Pull livepatching fix from Jiri Kosina:
"A fix for a kernel oops in case CONFIG_DEBUG_SET_MODULE_RONX is unset
(as in such case it's possible for module struct to share a page with
executable text, which is currently not being handled with grace) from
Josh Poimboeuf"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: Fix crash with !CONFIG_DEBUG_SET_MODULE_RONX
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When loading a patch module on a kernel with
!CONFIG_DEBUG_SET_MODULE_RONX, the following crash occurs:
[ 205.988776] livepatch: enabling patch 'kpatch_meminfo_string'
[ 205.989829] BUG: unable to handle kernel paging request at ffffffffa08d2fc0
[ 205.989863] IP: [<ffffffff8154fecb>] do_init_module+0x8c/0x1ba
[ 205.989888] PGD 1a10067 PUD 1a11063 PMD 7bcde067 PTE 3740e161
[ 205.989915] Oops: 0003 [#1] SMP
[ 205.990187] CPU: 2 PID: 14570 Comm: insmod Tainted: G O K 4.1.12
[ 205.990214] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014
[ 205.990249] task: ffff8800374aaa90 ti: ffff8800794b8000 task.ti: ffff8800794b8000
[ 205.990276] RIP: 0010:[<ffffffff8154fecb>] [<ffffffff8154fecb>] do_init_module+0x8c/0x1ba
[ 205.990307] RSP: 0018:ffff8800794bbd58 EFLAGS: 00010246
[ 205.990327] RAX: 0000000000000000 RBX: ffffffffa08d2fc0 RCX: 0000000000000000
[ 205.990356] RDX: 01ffff8000000080 RSI: 0000000000000000 RDI: ffffffff81a54b40
[ 205.990382] RBP: ffff88007b4c4d80 R08: 0000000000000007 R09: 0000000000000000
[ 205.990408] R10: 0000000000000008 R11: ffffea0001f18840 R12: 0000000000000000
[ 205.990433] R13: 0000000000000001 R14: ffffffffa08d2fc0 R15: ffff88007bd0bc40
[ 205.990459] FS: 00007f1128fbc700(0000) GS:ffff88007fc80000(0000) knlGS:0000000000000000
[ 205.990488] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 205.990509] CR2: ffffffffa08d2fc0 CR3: 000000002606e000 CR4: 00000000001406e0
[ 205.990536] Stack:
[ 205.990545] ffff8800794bbec8 0000000000000001 ffffffffa08d3010 ffffffff810ecea9
[ 205.990576] ffffffff810e8e40 000000000005f360 ffff88007bd0bc50 ffffffffa08d3240
[ 205.990608] ffffffffa08d52c0 ffffffffa08d3210 ffff8800794bbed8 ffff8800794bbf1c
[ 205.990639] Call Trace:
[ 205.990651] [<ffffffff810ecea9>] ? load_module+0x1e59/0x23a0
[ 205.990672] [<ffffffff810e8e40>] ? store_uevent+0x40/0x40
[ 205.990693] [<ffffffff810e99b5>] ? copy_module_from_fd.isra.49+0xb5/0x140
[ 205.990718] [<ffffffff810ed5bd>] ? SyS_finit_module+0x7d/0xa0
[ 205.990741] [<ffffffff81556832>] ? system_call_fastpath+0x16/0x75
[ 205.990763] Code: f9 00 00 00 74 23 49 c7 c0 92 e1 60 81 48 8d 53 18 89 c1 4c 89 c6 48 c7 c7 f0 85 7d 81 31 c0 e8 71 fa ff ff e8 58 0e 00 00 31 f6 <c7> 03 00 00 00 00 48 89 da 48 c7 c7 20 c7 a5 81 e8 d0 ec b3 ff
[ 205.990916] RIP [<ffffffff8154fecb>] do_init_module+0x8c/0x1ba
[ 205.990940] RSP <ffff8800794bbd58>
[ 205.990953] CR2: ffffffffa08d2fc0
With !CONFIG_DEBUG_SET_MODULE_RONX, module text and rodata pages are
writable, and the debug_align() macro allows the module struct to share
a page with executable text. When klp_write_module_reloc() calls
set_memory_ro() on the page, it effectively turns the module struct into
a read-only structure, resulting in a page fault when load_module() does
"mod->state = MODULE_STATE_LIVE".
Reported-by: Cyril B. <cbay@alwaysdata.com>
Tested-by: Cyril B. <cbay@alwaysdata.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracking updates from Steven Rostedt:
"Most of the changes are clean ups and small fixes. Some of them have
stable tags to them. I searched through my INBOX just as the merge
window opened and found lots of patches to pull. I ran them through
all my tests and they were in linux-next for a few days.
Features added this release:
----------------------------
- Module globbing. You can now filter function tracing to several
modules. # echo '*:mod:*snd*' > set_ftrace_filter (Dmitry Safonov)
- Tracer specific options are now visible even when the tracer is not
active. It was rather annoying that you can only see and modify
tracer options after enabling the tracer. Now they are in the
options/ directory even when the tracer is not active. Although
they are still only visible when the tracer is active in the
trace_options file.
- Trace options are now per instance (although some of the tracer
specific options are global)
- New tracefs file: set_event_pid. If any pid is added to this file,
then all events in the instance will filter out events that are not
part of this pid. sched_switch and sched_wakeup events handle next
and the wakee pids"
* tag 'trace-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (68 commits)
tracefs: Fix refcount imbalance in start_creating()
tracing: Put back comma for empty fields in boot string parsing
tracing: Apply tracer specific options from kernel command line.
tracing: Add some documentation about set_event_pid
ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark
tracing: Allow dumping traces without tracking trace started cpus
ring_buffer: Fix more races when terminating the producer in the benchmark
ring_buffer: Do no not complete benchmark reader too early
tracing: Remove redundant TP_ARGS redefining
tracing: Rename max_stack_lock to stack_trace_max_lock
tracing: Allow arch-specific stack tracer
recordmcount: arm64: Replace the ignored mcount call into nop
recordmcount: Fix endianness handling bug for nop_mcount
tracepoints: Fix documentation of RCU lockdep checks
tracing: ftrace_event_is_function() can return boolean
tracing: is_legal_op() can return boolean
ring-buffer: rb_event_is_commit() can return boolean
ring-buffer: rb_per_cpu_empty() can return boolean
ring_buffer: ring_buffer_empty{cpu}() can return boolean
ring-buffer: rb_is_reader_page() can return boolean
...
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Now, ftrace only calculate the dyn_ftrace number in the adding
breakpoint loop, not in adding update and finish update loop.
Calculate the correct dyn_ftrace, once ftrace reports the failure message
to the userspace.
Link: http://lkml.kernel.org/r/1442420382-13130-1-git-send-email-mnfhuang@gmail.com
Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply fix from Sebastian Reichel:
"Just a single revert for a patch, that I should not have queued.
Detailed description is inside the patch. It's totally my fault, that
this happened, sorry about that :("
* tag 'for-v4.4-important-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
Revert "ARM: dts: twl4030: Add iio properties for bci subnode"
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This reverts commit af19161aaed7ff8d1a52b2e517460f2fa0774e32,
which breaks the omap3 device tree build due to a wrong reference.
I accidently queued this change via the power supply subsystem while
telling Marek at the same time, that it should go through Tony.
Following that I did miss Stephen's messages about the build failure in
linux-next and since he switched to merging an older snapshot nobody
else noticed the problem in my tree. I didn't notice myself, since I
did not build any device tree files assuming none have changed by me.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Reported-by: Felipe Balbi <balbi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
"A fairly large (by DT standards) pull request this time with the
majority being some overdue moving DT binding docs around to
consolidate similar bindings.
- DT binding doc consolidation moving similar bindings to common
locations. The majority of these are display related which were
scattered in video/, fb/, drm/, gpu/, and panel/ directories.
- Add new config option, CONFIG_OF_ALL_DTBS, to enable building all
dtbs in the tree for most arches with dts files (except powerpc for
now).
- OF_IRQ=n fixes for user enabled CONFIG_OF.
- of_node_put ref counting fixes from Julia Lawall.
- Common DT binding for wakeup-source and deprecation of all similar
bindings.
- DT binding for PXA LCD controller.
- Allow ignoring failed PCI resource translations in order to ignore
64-bit addresses on non-LPAE 32-bit kernels.
- Support setting the NUMA node from DT instead of only from parent
device.
- Couple of earlycon DT parsing fixes for address and options"
* tag 'devicetree-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (45 commits)
MAINTAINERS: update DT binding doc locations
devicetree: add Sigma Designs vendor prefix
of: simplify arch_find_n_match_cpu_physical_id() function
Documentation: arm: Fixed typo in socfpga fpga mgr example
Documentation: devicetree: fix reference to legacy wakeup properties
Documentation: devicetree: standardize/consolidate on "wakeup-source" property
drivers: of: removing assignment of 0 to static variable
xtensa: enable building of all dtbs
mips: enable building of all dtbs
metag: enable building of all dtbs
metag: use common make variables for dtb builds
h8300: enable building of all dtbs
arm64: enable building of all dtbs
arm: enable building of all dtbs
arc: enable building of all dtbs
arc: use common make variables for dtb builds
of: add config option to enable building of all dtbs
of/fdt: fix error checking for earlycon address
of/overlay: add missing of_node_put
of/platform: add missing of_node_put
...
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Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-xtensa@linux-xtensa.org
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Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
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Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
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Use dtb-y and always make variables to build dtbs instead of explicit
dtbs rule. This is in preparation to support building all dtbs.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
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Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: uclinux-h8-devel@lists.sourceforge.jp
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Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed. This
is simpler for arm64 which has a bunch of sub-dirs.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
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Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed. This
is simpler for arm64 which has a bunch of sub-dirs.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
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Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
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Use dtb-y and always make variables to build dtbs instead of explicit
dtbs rule. This is in preparation to support building all dtbs.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"Items of note:
- evdev users can now limit or mask the kind of events they will
receive. This will allow applications such as power manager or
network manager to only be woken when user presses special keys
such as KEY_POWER or KEY_WIFI and not be bothered with ordinary
key presses coming from keyboard
- support for FocalTech FT6236 touchscreen controller
- support for ROHM BU21023/24 touchscreen controller
- edt-ft5x06 touchscreen driver got a face lift and can now be used
with FT5506
- support for Google Fiber TV Box remote controls
- improvements in xpad driver (with more to come)
- several parport-based drivers have been switched to the new device
model
- other miscellaneous driver improvements"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (70 commits)
HID: hid-gfrm: avoid warning for input_configured API change
HID: hid-input: allow input_configured callback return errors
Input: evdev - fix bug in checking duplicate clock change request
Input: add userio module
Input: evdev - add event-mask API
Input: snvs_pwrkey - remove duplicated semicolon
HID: hid-gfrm: Google Fiber TV Box remote controls
Input: e3x0-button - update Kconfig description
Input: tegra-kbc - drop use of IRQF_NO_SUSPEND flag
Input: tegra-kbc - enable support for the standard "wakeup-source" property
Input: xen - check return value of xenbus_printf
Input: hp_sdc_rtc - fix y2038 problem in proc_show
Input: nomadik-ske-keypad - fix a trivial typo
Input: xpad - fix clash of presence handling with LED setting
Input: edt-ft5x06 - work around FT5506 firmware bug
Input: edt-ft5x06 - add support for FT5506
Input: edt-ft5x06 - add support for different max support points
Input: edt-ft5x06 - use max support points to determine how much to read
Input: rotary-encoder - add support for quarter-period mode
Input: rotary-encoder - use of_property_read_bool
...
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Merge with mainline to sync up with changes to parkbd driver.
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Merge with Linux 4.3-rc3 to bring in MFD DA9062 changes to merge DA9062
OnKey driver.
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Now that the driver respects IRQ trigger settings from device tree, let's
fix them up in individual DTSes (note that the driver is still compatible
with older DTSes).
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Pull MTD updates from Brian Norris:
"Core:
- WARN (in some cases) when a struct mtd_info is registered multiple
times; in the past this was "supported", but it's still error prone
for future development. There's only one ugly case of this left in
the tree (that we're aware of) and the owners are aware of the
problems there.
- fix potential deadlock in the blkdev removal path NOTE: the
(potential) deadlock was introduced in a for-stable patch. This
one is also marked for -stable.
- ioctl(BLKPG) compat_ioctl support; resolves issues with 32-bit user
space vs 64-bit kernel space
- Set MTD parent device correctly throughout the tree, so the tree
structure appears correctly in sysfs; many drivers were missing
this (soft) requirement
- Move device tree partitions (ofpart) into a dedicated 'partitions'
subnode; this helps to disambiguate whether a node is a partition
or some other auxiliary data
- Improve error handling for partitioning failures
NAND:
- General: Increase timeout period, for corner-case systems with
less-than-accurate jiffies
- Fix OF-based autoloading of several NAND drivers when built as
modules
- pxa3xx_nand:
- Rework timing configuration to be more dynamic
- Refactor PM support
- brcmnand: prepare for NorthStar 2 support (ARM64, 16-bit NAND
chips)
- sunxi_nand: refactoring and a few bug fixes
- vf610: new NAND driver
- FSMC: add SW BCH support; support common NAND DT bindings
- lpc32xx_slc: refactor and improve timing calculations logic
- denali: support for rev 5.1
SPI NOR:
- Layering improvements
- Added Winbond lock/unlock support
- Added mtd_is_locked() (i.e., ioctl(MEMISLOCKED)) support
- Increase full-chip-erase timeout linearly with flash size
- fsl-quadspi: fix compile for non-ARM architectures
- New flash support"
* tag 'for-linus-20151106' of git://git.infradead.org/linux-mtd: (169 commits)
mtd: don't WARN about overloaded users of mtd->reboot_notifier.notifier_call
mtd: nand: sunxi: avoid retrieving data before ECC pass
mtd: nand: sunxi: fix sunxi_nfc_hw_ecc_read/write_chunk()
mtd: blkdevs: fix potential deadlock + lockdep warnings
mtd: ofpart: move ofpart partitions to a dedicated dt node
doc: dt: mtd: support partitions in a special 'partitions' subnode
mtd: brcmnand: Force 8bit mode before doing nand_scan_ident()
mtd: brcmnand: factor out CFG and CFG_EXT bitfields
mtd: mtdpart: Do not fail mtd probe when parsing partitions fails
mtd: fsl-quadspi: fix macro collision problems with READ/WRITE
mtd: warn when registering the same master many times
mtd: fixup corner case error handling in mtd_device_parse_register()
mtd: tests: Replace timeval with ktime_t
mtd: fsmc_nand: Add BCH4 SW ECC support for SPEAr600
mtd: nand: vf610_nfc: use nand_check_erased_ecc_chunk() helper
mtd: nand: increase ready wait timeout and report timeouts
mtd: docg3: off by one in doc_register_sysfs()
mtd: pxa3xx_nand: clean up the pxa3xx timings
mtd: pxa3xx_nand: rework flash detection and timing setup
mtd: pxa3xx_nand: add helpers to setup the timings
...
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The cmdlinepart parser is already supported in the default probe.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Resource management:
- Add support for Enhanced Allocation devices (Sean O. Stalley)
- Add Enhanced Allocation register entries (Sean O. Stalley)
- Handle IORESOURCE_PCI_FIXED when sizing resources (David Daney)
- Handle IORESOURCE_PCI_FIXED when assigning resources (David Daney)
- Handle Enhanced Allocation capability for SR-IOV devices (David Daney)
- Clear IORESOURCE_UNSET when reverting to firmware-assigned address (Bjorn Helgaas)
- Make Enhanced Allocation bitmasks more obvious (Bjorn Helgaas)
- Expand Enhanced Allocation BAR output (Bjorn Helgaas)
- Add of_pci_check_probe_only to parse "linux,pci-probe-only" (Marc Zyngier)
- Fix lookup of linux,pci-probe-only property (Marc Zyngier)
- Add sparc mem64 resource parsing for root bus (Yinghai Lu)
PCI device hotplug:
- pciehp: Queue power work requests in dedicated function (Guenter Roeck)
Driver binding:
- Add builtin_pci_driver() to avoid registration boilerplate (Paul Gortmaker)
Virtualization:
- Set SR-IOV NumVFs to zero after enumeration (Alexander Duyck)
- Remove redundant validation of SR-IOV offset/stride registers (Alexander Duyck)
- Remove VFs in reverse order if virtfn_add() fails (Alexander Duyck)
- Reorder pcibios_sriov_disable() (Alexander Duyck)
- Wait 1 second between disabling VFs and clearing NumVFs (Alexander Duyck)
- Fix sriov_enable() error path for pcibios_enable_sriov() failures (Alexander Duyck)
- Enable SR-IOV ARI Capable Hierarchy before reading TotalVFs (Ben Shelton)
- Don't try to restore VF BARs (Wei Yang)
MSI:
- Don't alloc pcibios-irq when MSI is enabled (Joerg Roedel)
- Add msi_controller setup_irqs() method for special multivector setup (Lucas Stach)
- Export all remapped MSIs to sysfs attributes (Romain Bezut)
- Disable MSI on SiS 761 (Ondrej Zary)
AER:
- Clear error status registers during enumeration and restore (Taku Izumi)
Generic host bridge driver:
- Fix lookup of linux,pci-probe-only property (Marc Zyngier)
- Allow multiple hosts with different map_bus() methods (David Daney)
- Pass starting bus number to pci_scan_root_bus() (David Daney)
- Fix address window calculation for non-zero starting bus (David Daney)
Altera host bridge driver:
- Add msi.h to ARM Kbuild (Ley Foon Tan)
- Add Altera PCIe host controller driver (Ley Foon Tan)
- Add Altera PCIe MSI driver (Ley Foon Tan)
APM X-Gene host bridge driver:
- Remove msi_controller assignment (Duc Dang)
Broadcom iProc host bridge driver:
- Fix header comment "Corporation" misspelling (Florian Fainelli)
- Fix code comment to match code (Ray Jui)
- Remove unused struct iproc_pcie.irqs[] (Ray Jui)
- Call pci_fixup_irqs() for ARM64 as well as ARM (Ray Jui)
- Fix PCIe reset logic (Ray Jui)
- Improve link detection logic (Ray Jui)
- Update PCIe device tree bindings (Ray Jui)
- Add outbound mapping support (Ray Jui)
Freescale i.MX6 host bridge driver:
- Return real error code from imx6_add_pcie_port() (Fabio Estevam)
- Add PCIE_PHY_RX_ASIC_OUT_VALID definition (Fabio Estevam)
Freescale Layerscape host bridge driver:
- Remove ls_pcie_establish_link() (Minghuan Lian)
- Ignore PCIe controllers in Endpoint mode (Minghuan Lian)
- Factor out SCFG related function (Minghuan Lian)
- Update ls_add_pcie_port() (Minghuan Lian)
- Remove unused fields from struct ls_pcie (Minghuan Lian)
- Add support for LS1043a and LS2080a (Minghuan Lian)
- Add ls_pcie_msi_host_init() (Minghuan Lian)
HiSilicon host bridge driver:
- Add HiSilicon SoC Hip05 PCIe driver (Zhou Wang)
Marvell MVEBU host bridge driver:
- Return zero for reserved or unimplemented config space (Russell King)
- Use exact config access size; don't read/modify/write (Russell King)
- Use of_get_available_child_count() (Russell King)
- Use for_each_available_child_of_node() to walk child nodes (Russell King)
- Report full node name when reporting a DT error (Russell King)
- Use port->name rather than "PCIe%d.%d" (Russell King)
- Move port parsing and resource claiming to separate function (Russell King)
- Fix memory leaks and refcount leaks (Russell King)
- Split port parsing and resource claiming from port setup (Russell King)
- Use gpio_set_value_cansleep() (Russell King)
- Use devm_kcalloc() to allocate an array (Russell King)
- Use gpio_desc to carry around gpio (Russell King)
- Improve clock/reset handling (Russell King)
- Add PCI Express root complex capability block (Russell King)
- Remove code restricting accesses to slot 0 (Russell King)
NVIDIA Tegra host bridge driver:
- Wrap static pgprot_t initializer with __pgprot() (Ard Biesheuvel)
Renesas R-Car host bridge driver:
- Build pci-rcar-gen2.c only on ARM (Geert Uytterhoeven)
- Build pcie-rcar.c only on ARM (Geert Uytterhoeven)
- Make PCI aware of the I/O resources (Phil Edworthy)
- Remove dependency on ARM-specific struct hw_pci (Phil Edworthy)
- Set root bus nr to that provided in DT (Phil Edworthy)
- Fix I/O offset for multiple host bridges (Phil Edworthy)
ST Microelectronics SPEAr13xx host bridge driver:
- Fix dw_pcie_cfg_read/write() usage (Gabriele Paoloni)
Synopsys DesignWare host bridge driver:
- Make "clocks" and "clock-names" optional DT properties (Bhupesh Sharma)
- Use exact access size in dw_pcie_cfg_read() (Gabriele Paoloni)
- Simplify dw_pcie_cfg_read/write() interfaces (Gabriele Paoloni)
- Require config accesses to be naturally aligned (Gabriele Paoloni)
- Make "num-lanes" an optional DT property (Gabriele Paoloni)
- Move calculation of bus addresses to DRA7xx (Gabriele Paoloni)
- Replace ARM pci_sys_data->align_resource with global function pointer (Gabriele Paoloni)
- Factor out MSI msg setup (Lucas Stach)
- Implement multivector MSI IRQ setup (Lucas Stach)
- Make get_msi_addr() return phys_addr_t, not u32 (Lucas Stach)
- Set up high part of MSI target address (Lucas Stach)
- Fix PORT_LOGIC_LINK_WIDTH_MASK (Zhou Wang)
- Revert "PCI: designware: Program ATU with untranslated address" (Zhou Wang)
- Use of_pci_get_host_bridge_resources() to parse DT (Zhou Wang)
- Make driver arch-agnostic (Zhou Wang)
Miscellaneous:
- Make x86 pci_subsys_init() static (Alexander Kuleshov)
- Turn off Request Attributes to avoid Chelsio T5 Completion erratum (Hariprasad Shenai)"
* tag 'pci-v4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (94 commits)
PCI: altera: Add Altera PCIe MSI driver
PCI: hisi: Add HiSilicon SoC Hip05 PCIe driver
PCI: layerscape: Add ls_pcie_msi_host_init()
PCI: layerscape: Add support for LS1043a and LS2080a
PCI: layerscape: Remove unused fields from struct ls_pcie
PCI: layerscape: Update ls_add_pcie_port()
PCI: layerscape: Factor out SCFG related function
PCI: layerscape: Ignore PCIe controllers in Endpoint mode
PCI: layerscape: Remove ls_pcie_establish_link()
PCI: designware: Make "clocks" and "clock-names" optional DT properties
PCI: designware: Make driver arch-agnostic
ARM/PCI: Replace pci_sys_data->align_resource with global function pointer
PCI: designware: Use of_pci_get_host_bridge_resources() to parse DT
Revert "PCI: designware: Program ATU with untranslated address"
PCI: designware: Move calculation of bus addresses to DRA7xx
PCI: designware: Make "num-lanes" an optional DT property
PCI: designware: Require config accesses to be naturally aligned
PCI: designware: Simplify dw_pcie_cfg_read/write() interfaces
PCI: designware: Use exact access size in dw_pcie_cfg_read()
PCI: spear: Fix dw_pcie_cfg_read/write() usage
...
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'pci/host-imx6', 'pci/host-iproc', 'pci/host-mvebu', 'pci/host-rcar', 'pci/host-tegra' and 'pci/host-xgene' into next
* pci/host-altera:
PCI: altera: Add Altera PCIe MSI driver
PCI: altera: Add Altera PCIe host controller driver
ARM: Add msi.h to Kbuild
* pci/host-designware:
PCI: designware: Make "clocks" and "clock-names" optional DT properties
PCI: designware: Make driver arch-agnostic
ARM/PCI: Replace pci_sys_data->align_resource with global function pointer
PCI: designware: Use of_pci_get_host_bridge_resources() to parse DT
Revert "PCI: designware: Program ATU with untranslated address"
PCI: designware: Move calculation of bus addresses to DRA7xx
PCI: designware: Make "num-lanes" an optional DT property
PCI: designware: Require config accesses to be naturally aligned
PCI: designware: Simplify dw_pcie_cfg_read/write() interfaces
PCI: designware: Use exact access size in dw_pcie_cfg_read()
PCI: spear: Fix dw_pcie_cfg_read/write() usage
PCI: designware: Set up high part of MSI target address
PCI: designware: Make get_msi_addr() return phys_addr_t, not u32
PCI: designware: Implement multivector MSI IRQ setup
PCI: designware: Factor out MSI msg setup
PCI: Add msi_controller setup_irqs() method for special multivector setup
PCI: designware: Fix PORT_LOGIC_LINK_WIDTH_MASK
* pci/host-generic:
PCI: generic: Fix address window calculation for non-zero starting bus
PCI: generic: Pass starting bus number to pci_scan_root_bus()
PCI: generic: Allow multiple hosts with different map_bus() methods
arm64: dts: Drop linux,pci-probe-only from the Seattle DTS
powerpc/PCI: Fix lookup of linux,pci-probe-only property
PCI: generic: Fix lookup of linux,pci-probe-only property
of/pci: Add of_pci_check_probe_only to parse "linux,pci-probe-only"
* pci/host-imx6:
PCI: imx6: Add PCIE_PHY_RX_ASIC_OUT_VALID definition
PCI: imx6: Return real error code from imx6_add_pcie_port()
* pci/host-iproc:
PCI: iproc: Fix header comment "Corporation" misspelling
PCI: iproc: Add outbound mapping support
PCI: iproc: Update PCIe device tree bindings
PCI: iproc: Improve link detection logic
PCI: iproc: Fix PCIe reset logic
PCI: iproc: Call pci_fixup_irqs() for ARM64 as well as ARM
PCI: iproc: Remove unused struct iproc_pcie.irqs[]
PCI: iproc: Fix code comment to match code
* pci/host-mvebu:
PCI: mvebu: Remove code restricting accesses to slot 0
PCI: mvebu: Add PCI Express root complex capability block
PCI: mvebu: Improve clock/reset handling
PCI: mvebu: Use gpio_desc to carry around gpio
PCI: mvebu: Use devm_kcalloc() to allocate an array
PCI: mvebu: Use gpio_set_value_cansleep()
PCI: mvebu: Split port parsing and resource claiming from port setup
PCI: mvebu: Fix memory leaks and refcount leaks
PCI: mvebu: Move port parsing and resource claiming to separate function
PCI: mvebu: Use port->name rather than "PCIe%d.%d"
PCI: mvebu: Report full node name when reporting a DT error
PCI: mvebu: Use for_each_available_child_of_node() to walk child nodes
PCI: mvebu: Use of_get_available_child_count()
PCI: mvebu: Use exact config access size; don't read/modify/write
PCI: mvebu: Return zero for reserved or unimplemented config space
* pci/host-rcar:
PCI: rcar: Fix I/O offset for multiple host bridges
PCI: rcar: Set root bus nr to that provided in DT
PCI: rcar: Remove dependency on ARM-specific struct hw_pci
PCI: rcar: Make PCI aware of the I/O resources
PCI: rcar: Build pcie-rcar.c only on ARM
PCI: rcar: Build pci-rcar-gen2.c only on ARM
* pci/host-tegra:
PCI: tegra: Wrap static pgprot_t initializer with __pgprot()
* pci/host-xgene:
PCI/MSI: xgene: Remove msi_controller assignment
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The linux,pci-probe-only property mandates an argument to indicate whether
or not to engage the "probe-only" mode, but the Seattle DTS just provides a
naked property, which is illegal.
Also, it turns out that the board is perfectly happy without probe-only, so
let's drop this altogether.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
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When find_and_init_phbs() looks for the probe-only property, it seems to
trust the firmware to be correctly written, and assumes that there is a
parameter to the property.
It is conceivable that the firmware could not be that perfect, and it could
expose this property naked (at least one arm64 platform seems to exhibit
this exact behaviour). The setup code the ends up making a decision based
on whatever the property pointer points to, which is likely to be junk.
Instead, switch to the common of_pci.c implementation that doesn't suffer
from this problem and ignore the property if the firmware couldn't make up
its mind.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
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dw_pcie_host_init() creates the PCI host bridge with pci_common_init_dev(),
an ARM-specific function that supplies the ARM-specific pci_sys_data
structure as the PCI "sysdata". To use dw_pcie_host_init() on other
architectures, we will copy the internals of pci_common_init_dev() into
pcie-designware.c instead of calling it, and dw_pcie_host_init() will
supply the DesignWare pcie_port structure as "sysdata".
Most ARM "sysdata" users are specific to non-DesignWare host bridges;
they'll be unaffected because those bridges will continue to have the ARM
pci_sys_data. Most of the rest are ARM-generic functions called by
pci_common_init_dev(); these will be unaffected because dw_pcie_host_init()
will no longer call pci_common_init().
But the ARM pcibios_align_resource() can be called by the PCI core for any
bridge, so it can't depend on sysdata since it may be either pci_sys_data
or pcie_port.
Remove the pcibios_align_resource() dependency on sysdata by replacing the
pci_sys_data->align_resource pointer with a global function pointer.
This is less general (we can no longer have per-host bridge
align_resource() methods), but the pci_sys_data->align_resource pointer was
used only by Marvell (see mvebu_pcie_enable()), so this would only be a
problem if we had a system with a combination of Marvell and other host
bridges
[bhelgaas: changelog]
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
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Include asm-generic/msi.h to support CONFIG_GENERIC_MSI_IRQ_DOMAIN.
This fixes a compilation error:
include/linux/msi.h:123:21: fatal error: asm/msi.h: No such file or directory
Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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'pci/resource' and 'pci/virtualization' into next
* pci/aer:
PCI/AER: Clear error status registers during enumeration and restore
* pci/hotplug:
PCI: pciehp: Queue power work requests in dedicated function
* pci/misc:
PCI: Turn off Request Attributes to avoid Chelsio T5 Completion erratum
x86/PCI: Make pci_subsys_init() static
PCI: Add builtin_pci_driver() to avoid registration boilerplate
PCI: Remove unnecessary "if" statement
* pci/msi:
x86/PCI: Don't alloc pcibios-irq when MSI is enabled
PCI/MSI: Export all remapped MSIs to sysfs attributes
PCI: Disable MSI on SiS 761
* pci/resource:
sparc/PCI: Add mem64 resource parsing for root bus
PCI: Expand Enhanced Allocation BAR output
PCI: Make Enhanced Allocation bitmasks more obvious
PCI: Handle Enhanced Allocation capability for SR-IOV devices
PCI: Add support for Enhanced Allocation devices
PCI: Add Enhanced Allocation register entries
PCI: Handle IORESOURCE_PCI_FIXED when assigning resources
PCI: Handle IORESOURCE_PCI_FIXED when sizing resources
PCI: Clear IORESOURCE_UNSET when reverting to firmware-assigned address
* pci/virtualization:
PCI: Fix sriov_enable() error path for pcibios_enable_sriov() failures
PCI: Wait 1 second between disabling VFs and clearing NumVFs
PCI: Reorder pcibios_sriov_disable()
PCI: Remove VFs in reverse order if virtfn_add() fails
PCI: Remove redundant validation of SR-IOV offset/stride registers
PCI: Set SR-IOV NumVFs to zero after enumeration
PCI: Enable SR-IOV ARI Capable Hierarchy before reading TotalVFs
PCI: Don't try to restore VF BARs
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David reported that a T5-8 sparc system failed to boot with:
pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io 0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff])
pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff])
pci 0000:00:01.0: can't claim BAR 15 [mem 0x100000000-0x4afffffff pref]: no compatible bridge window
Note that we don't know about a host bridge aperture that contains
BAR 15. OF does report a MEM64 aperture, but before this patch,
pci_determine_mem_io_space() ignored it.
Add support for host bridge apertures with 64-bit PCI addresses. Also
set IORESOURCE_MEM_64 for PCI device and bridge resources in PCI 64-bit
memory space.
Sparc doesn't actually print the device and bridge resources, but after
this patch, we should have the equivalent of this:
pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io 0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff])
pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff])
pci_bus 0000:00: root bus resource [mem 0x800100000000-0x8007ffffffff] (bus address [0x100000000-0x7ffffffff])
pci 0000:00:01.0: bridge window [mem 0x800100000000-0x8004afffffff 64bit pref]
[bhelgaas: changelog, URL to David's report]
Fixes: d63e2e1f3df9 ("sparc/PCI: Clip bridge windows to fit in upstream windows")
Link: http://lkml.kernel.org/r/5514391F.2030300@oracle.com
Reported-by: David Ahern <david.ahern@oracle.com>
Tested-by: David Ahern <david.ahern@oracle.com>
Tested-by: Khalid Aziz <khalid.aziz@oracle.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The pcibios-irq and MSI both use dev->irq to store the IRQ number. While
the MSI code checks for that and frees the pcibios-irq before overwriting
dev->irq, the pcibios_alloc_irq() function does not.
Usually this is not a problem, as the pcibios-irq is allocated before probe
time of the device and the MSI IRQ is allocted from the driver's probe
path.
But there are PCI devices handled by the core kernel and not by a standard
PCI driver, like the AMD IOMMU for example. For the AMD IOMMU a normal PCI
device driver does not make sense, because a driver can be forcibly unbound
from its device, which is not a good idea for an IOMMU.
Nevertheless the PCI core code tries to match the PCI device implementing
the AMD IOMMU against drivers, and allocates/frees a pcibios IRQ every time
it tries out a new driver. This overwrites the dev->irq field set by
pci_enable_msi() and sets it to 0 in the end (because the probe fails and
the pcibios-irq is freed again).
On suspend/resume this breaks the kernel, because the IRQ descriptor for
IRQ 0 is NULL.
Fix this by not allocating a pcibios-irq when MSI is already active. This
also has the benefit, that a device claimed by the core kernel can not be
probed by a PCI driver later.
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
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The pci_subsys_init() is a subsys_initcall that can be declared static.
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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It turns out that we still have issues with the EFI memory map that ends
up polluting our kernel page tables with writable executable pages.
That will get sorted out, but in the meantime let's not make the scary
complaint about them be on by default. The code is useful for
developers, but not ready for end user testing yet.
Acked-by: Borislav Petkov <bp@alien8.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Kconfig: remove BE-only platforms from LE kernel build from Boqun
Feng
- Refresh ps3_defconfig from Geoff Levand
- Emit GNU & SysV hashes for the vdso from Michael Ellerman
- Define an enum for the bolted SLB indexes from Anshuman Khandual
- Use a local to avoid multiple calls to get_slb_shadow() from Michael
Ellerman
- Add gettimeofday() benchmark from Michael Neuling
- Avoid link stack corruption in __get_datapage() from Michael Neuling
- Add virt_to_pfn and use this instead of opencoding from Aneesh Kumar
K.V
- Add ppc64le_defconfig from Michael Ellerman
- pseries: extract of_helpers module from Andy Shevchenko
- Correct string length in pseries_of_derive_parent() from Nathan
Fontenot
- Free the MSI bitmap if it was slab allocated from Denis Kirjanov
- Shorten irq_chip name for the SIU from Christophe Leroy
- Wait 1s for secondaries to enter OPAL during kexec from Samuel
Mendoza-Jonas
- Fix _ALIGN_* errors due to type difference, from Aneesh Kumar K.V
- powerpc/pseries/hvcserver: don't memset pi_buff if it is null from
Colin Ian King
- Disable hugepd for 64K page size, from Aneesh Kumar K.V
- Differentiate between hugetlb and THP during page walk from Aneesh
Kumar K.V
- Make PCI non-optional for pseries from Michael Ellerman
- Individual System V IPC system calls from Sam bobroff
- Add selftest of unmuxed IPC calls from Michael Ellerman
- discard .exit.data at runtime from Stephen Rothwell
- Delete old orphaned PrPMC 280/2800 DTS and boot file, from Paul
Gortmaker
- Use of_get_next_parent to simplify code from Christophe Jaillet
- Paginate some xmon output from Sam bobroff
- Add some more elements to the xmon PACA dump from Michael Ellerman
- Allow the tm-syscall selftest to build with old headers from Michael
Ellerman
- Run EBB selftests only on POWER8 from Denis Kirjanov
- Drop CONFIG_TUNE_CELL in favour of CONFIG_CELL_CPU from Michael
Ellerman
- Avoid reference to potentially freed memory in prom.c from Christophe
Jaillet
- Quieten boot wrapper output with run_cmd from Geoff Levand
- EEH fixes and cleanups from Gavin Shan
- Fix recursive fenced PHB on Broadcom shiner adapter from Gavin Shan
- Use of_get_next_parent() in of_get_ibm_chip_id() from Michael
Ellerman
- Fix section mismatch warning in msi_bitmap_alloc() from Denis
Kirjanov
- Fix ps3-lpm white space from Rudhresh Kumar J
- Fix ps3-vuart null dereference from Colin King
- nvram: Add missing kfree in error path from Christophe Jaillet
- nvram: Fix function name in some errors messages, from Christophe
Jaillet
- drivers/macintosh: adb: fix misleading Kconfig help text from Aaro
Koskinen
- agp/uninorth: fix a memleak in create_gatt_table from Denis Kirjanov
- cxl: Free virtual PHB when removing from Andrew Donnellan
- scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target from
Michael Ellerman
- scripts/kconfig/Makefile: Fix KBUILD_DEFCONFIG check when building
with O= from Michael Ellerman
- Freescale updates from Scott: Highlights include 64-bit book3e
kexec/kdump support, a rework of the qoriq clock driver, device tree
changes including qoriq fman nodes, support for a new 85xx board, and
some fixes.
- MPC5xxx updates from Anatolij: Highlights include a driver for
MPC512x LocalPlus Bus FIFO with its device tree binding
documentation, mpc512x device tree updates and some minor fixes.
* tag 'powerpc-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (106 commits)
powerpc/msi: Fix section mismatch warning in msi_bitmap_alloc()
powerpc/prom: Use of_get_next_parent() in of_get_ibm_chip_id()
powerpc/pseries: Correct string length in pseries_of_derive_parent()
powerpc/e6500: hw tablewalk: make sure we invalidate and write to the same tlb entry
powerpc/mpc85xx: Add FSL QorIQ DPAA FMan support to the SoC device tree(s)
powerpc/mpc85xx: Create dts components for the FSL QorIQ DPAA FMan
powerpc/fsl: Add #clock-cells and clockgen label to clockgen nodes
powerpc: handle error case in cpm_muram_alloc()
powerpc: mpic: use IRQCHIP_SKIP_SET_WAKE instead of redundant mpic_irq_set_wake
powerpc/book3e-64: Enable kexec
powerpc/book3e-64/kexec: Set "r4 = 0" when entering spinloop
powerpc/booke: Only use VIRT_PHYS_OFFSET on booke32
powerpc/book3e-64/kexec: Enable SMP release
powerpc/book3e-64/kexec: create an identity TLB mapping
powerpc/book3e-64: Don't limit paca to 256 MiB
powerpc/book3e/kdump: Enable crash_kexec_wait_realmode
powerpc/book3e: support CONFIG_RELOCATABLE
powerpc/booke64: Fix args to copy_and_flush
powerpc/book3e-64: rename interrupt_end_book3e with __end_interrupts
powerpc/e6500: kexec: Handle hardware threads
...
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MPC5xxx updates from Anatolij:
"Highlights include a driver for MPC512x LocalPlus Bus FIFO with its
device tree binding documentation, mpc512x device tree updates and some
minor fixes."
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This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfree in probe function.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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These were introduced in commit 25ae3a0739c6 ("[POWERPC] mpc512x: Add
MPC512x PSC support to MPC52xx psc driver") and never used. Moreover
according to the datasheet[1] MEMERROR is bit 25 (0x40) and ORERR is
bit 27 (0x10).
[1] MPC5125RM Rev. 2; 11/2009
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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Add a device tree binding for Freescale MPC512x LocalPlus Bus FIFO and
introduce the document describing that binding.
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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This driver for Freescale MPC512x LocalPlus Bus FIFO (called SCLPC
in the Reference Manual) allows Direct Memory Access transfers
between RAM and peripheral devices on LocalPlus Bus.
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next
Freescale updates from Scott:
"Highlights include 64-bit book3e kexec/kdump support, a rework of the
qoriq clock driver, device tree changes including qoriq fman nodes,
support for a new 85xx board, and some fixes.
Note that there is a trivial merge conflict with the clock tree's next
branch, in the clock Makefile."
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