| Commit message (Collapse) | Author | Age | Files | Lines |
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'spi/topic/s3c64xx', 'spi/topic/sh' and 'spi/topic/sh-msiof' into spi-next
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When the CS line is not connected, it is not needed to enable or
disable the chip selection functionality from the s3c64xx
devices in order to perform a transfer.
Set the CS controller logically always enabled already during
initialization (by writing '0' in the S3C64XX_SPI_SLAVE_SEL
register) and never disable it.
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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'spi/topic/loopback', 'spi/topic/maintainers' and 'spi/topic/mpc52xx-psc' into spi-next
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Few SPI devices provide accelerated read interfaces to read from
SPI-NOR flash devices. These hardwares also support DMA to transfer data
from flash to memory either via mem-to-mem DMA or dedicated slave DMA
channels. Hence, add support for DMA in order to improve throughput and
reduce CPU load.
Use spi_map_buf() to get sg table for the buffer and pass it to SPI
driver.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Pull networking fixes from David Miller:
1) Fix memory leak in nftables, from Liping Zhang.
2) Need to check result of vlan_insert_tag() in batman-adv otherwise we
risk NULL skb derefs, from Sven Eckelmann.
3) Check for dev_alloc_skb() failures in cfg80211, from Gregory
Greenman.
4) Handle properly when we have ppp_unregister_channel() happening in
parallel with ppp_connect_channel(), from WANG Cong.
5) Fix DCCP deadlock, from Eric Dumazet.
6) Bail out properly in UDP if sk_filter() truncates the packet to be
smaller than even the space that the protocol headers need. From
Michal Kubecek.
7) Similarly for rose, dccp, and sctp, from Willem de Bruijn.
8) Make TCP challenge ACKs less predictable, from Eric Dumazet.
9) Fix infinite loop in bgmac_dma_tx_add() from Florian Fainelli.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits)
packet: propagate sock_cmsg_send() error
net/mlx5e: Fix del vxlan port command buffer memset
packet: fix second argument of sock_tx_timestamp()
net: switchdev: change ageing_time type to clock_t
Update maintainer for EHEA driver.
net/mlx4_en: Add resilience in low memory systems
net/mlx4_en: Move filters cleanup to a proper location
sctp: load transport header after sk_filter
net/sched/sch_htb: clamp xstats tokens to fit into 32-bit int
net: cavium: liquidio: Avoid dma_unmap_single on uninitialized ndata
net: nb8800: Fix SKB leak in nb8800_receive()
et131x: Fix logical vs bitwise check in et131x_tx_timeout()
vlan: use a valid default mtu value for vlan over macsec
net: bgmac: Fix infinite loop in bgmac_dma_tx_add()
mlxsw: spectrum: Prevent invalid ingress buffer mapping
mlxsw: spectrum: Prevent overwrite of DCB capability fields
mlxsw: spectrum: Don't emit errors when PFC is disabled
mlxsw: spectrum: Indicate support for autonegotiation
mlxsw: spectrum: Force link training according to admin state
r8152: add MODULE_VERSION
...
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The switchdev value for the SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME
attribute is a clock_t and requires to use helpers such as
clock_t_to_jiffies() to convert to milliseconds.
Change ageing_time type from u32 to clock_t to make it explicit.
Fixes: f55ac58ae64c ("switchdev: add bridge ageing_time attribute")
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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macsec can't cope with mtu frames which need vlan tag insertion, and
vlan device set the default mtu equal to the underlying dev's one.
By default vlan over macsec devices use invalid mtu, dropping
all the large packets.
This patch adds a netif helper to check if an upper vlan device
needs mtu reduction. The helper is used during vlan devices
initialization to set a valid default and during mtu updating to
forbid invalid, too bit, mtu values.
The helper currently only check if the lower dev is a macsec device,
if we get more users, we need to update only the helper (possibly
reserving an additional IFF bit).
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Dccp verifies packet integrity, including length, at initial rcv in
dccp_invalid_packet, later pulls headers in dccp_enqueue_skb.
A call to sk_filter in-between can cause __skb_pull to wrap skb->len.
skb_copy_datagram_msg interprets this as a negative value, so
(correctly) fails with EFAULT. The negative length is reported in
ioctl SIOCINQ or possibly in a DCCP_WARN in dccp_close.
Introduce an sk_receive_skb variant that caps how small a filter
program can trim packets, and call this in dccp with the header
length. Excessively trimmed packets are now processed normally and
queued for reception as 0B payloads.
Fixes: 7c657876b63c ("[DCCP]: Initial implementation")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Sockets can have a filter program attached that drops or trims
incoming packets based on the filter program return value.
Rose requires data packets to have at least ROSE_MIN_LEN bytes. It
verifies this on arrival in rose_route_frame and unconditionally pulls
the bytes in rose_recvmsg. The filter can trim packets to below this
value in-between, causing pull to fail, leaving the partial header at
the time of skb_copy_datagram_msg.
Place a lower bound on the size to which sk_filter may trim packets
by introducing sk_filter_trim_cap and call this for rose packets.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains Netfilter/IPVS fixes for your net tree.
they are:
1) Fix leak in the error path of nft_expr_init(), from Liping Zhang.
2) Tracing from nf_tables cannot be disabled, also from Zhang.
3) Fix an integer overflow on 32bit archs when setting the number of
hashtable buckets, from Florian Westphal.
4) Fix configuration of ipvs sync in backup mode with IPv6 address,
from Quentin Armitage via Simon Horman.
5) Fix incorrect timeout calculation in nft_ct NFT_CT_EXPIRATION,
from Florian Westphal.
6) Skip clash resolution in conntrack insertion races if NAT is in
place.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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We need to compute timeout.expires - jiffies, not the other way around.
Add a helper, another patch can then later change more places in
conntrack code where we currently open-code this.
Will allow us to only change one place later when we remove per-ct timer.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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radix_tree_iter_retry() resets slot to NULL, but it doesn't reset tags.
Then NULL slot and non-zero iter.tags passed to radix_tree_next_slot()
leading to crash:
RIP: radix_tree_next_slot include/linux/radix-tree.h:473
find_get_pages_tag+0x334/0x930 mm/filemap.c:1452
....
Call Trace:
pagevec_lookup_tag+0x3a/0x80 mm/swap.c:960
mpage_prepare_extent_to_map+0x321/0xa90 fs/ext4/inode.c:2516
ext4_writepages+0x10be/0x2b20 fs/ext4/inode.c:2736
do_writepages+0x97/0x100 mm/page-writeback.c:2364
__filemap_fdatawrite_range+0x248/0x2e0 mm/filemap.c:300
filemap_write_and_wait_range+0x121/0x1b0 mm/filemap.c:490
ext4_sync_file+0x34d/0xdb0 fs/ext4/fsync.c:115
vfs_fsync_range+0x10a/0x250 fs/sync.c:195
vfs_fsync fs/sync.c:209
do_fsync+0x42/0x70 fs/sync.c:219
SYSC_fdatasync fs/sync.c:232
SyS_fdatasync+0x19/0x20 fs/sync.c:230
entry_SYSCALL_64_fastpath+0x23/0xc1 arch/x86/entry/entry_64.S:207
We must reset iterator's tags to bail out from radix_tree_next_slot()
and go to the slow-path in radix_tree_next_chunk().
Fixes: 46437f9a554f ("radix-tree: fix race in gang lookup")
Link: http://lkml.kernel.org/r/1468495196-10604-1-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The memory controller has quite a bit of state that usually outlives the
cgroup and pins its CSS until said state disappears. At the same time
it imposes a 16-bit limit on the CSS ID space to economically store IDs
in the wild. Consequently, when we use cgroups to contain frequent but
small and short-lived jobs that leave behind some page cache, we quickly
run into the 64k limitations of outstanding CSSs. Creating a new cgroup
fails with -ENOSPC while there are only a few, or even no user-visible
cgroups in existence.
Although pinning CSSs past cgroup removal is common, there are only two
instances that actually need an ID after a cgroup is deleted: cache
shadow entries and swapout records.
Cache shadow entries reference the ID weakly and can deal with the CSS
having disappeared when it's looked up later. They pose no hurdle.
Swap-out records do need to pin the css to hierarchically attribute
swapins after the cgroup has been deleted; though the only pages that
remain swapped out after offlining are tmpfs/shmem pages. And those
references are under the user's control, so they are manageable.
This patch introduces a private 16-bit memcg ID and switches swap and
cache shadow entries over to using that. This ID can then be recycled
after offlining when the CSS remains pinned only by objects that don't
specifically need it.
This script demonstrates the problem by faulting one cache page in a new
cgroup and deleting it again:
set -e
mkdir -p pages
for x in `seq 128000`; do
[ $((x % 1000)) -eq 0 ] && echo $x
mkdir /cgroup/foo
echo $$ >/cgroup/foo/cgroup.procs
echo trex >pages/$x
echo $$ >/cgroup/cgroup.procs
rmdir /cgroup/foo
done
When run on an unpatched kernel, we eventually run out of possible IDs
even though there are no visible cgroups:
[root@ham ~]# ./cssidstress.sh
[...]
65000
mkdir: cannot create directory '/cgroup/foo': No space left on device
After this patch, the IDs get released upon cgroup destruction and the
cache and css objects get released once memory reclaim kicks in.
[hannes@cmpxchg.org: init the IDR]
Link: http://lkml.kernel.org/r/20160621154601.GA22431@cmpxchg.org
Fixes: b2052564e66d ("mm: memcontrol: continue cache reclaim from offlined groups")
Link: http://lkml.kernel.org/r/20160617162516.GD19084@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: John Garcia <john.garcia@mesosphere.io>
Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Nikolay Borisov <kernel@kyup.com>
Cc: <stable@vger.kernel.org> [3.19+]
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/dtor/input
Pull input fixes from Dmitry Torokhov:
"A few last-minute updates for the input subsystem"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: ts4800-ts - add missing of_node_put after calling of_parse_phandle
Input: synaptics-rmi4 - use of_get_child_by_name() to fix refcount
Revert "Input: wacom_w8001 - drop use of ABS_MT_TOOL_TYPE"
Input: xpad - validate USB endpoint count during probe
Input: add SW_PEN_INSERTED define
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Some devices with a pen may have a switch that can be used to detect
when the pen is inserted or removed to a slot on the device. Let's add
a define to the input event codes so that everyone can be on the same
page for what event we should generate when the pen is inserted or
removed.
In general the pen switch could be used by the software on the device to
kick off any number of actions when the pen is inserted or removed.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge misc fixes from Andrew Morton:
"20 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
m32r: fix build warning about putc
mm: workingset: printk missing log level, use pr_info()
mm: thp: refix false positive BUG in page_move_anon_rmap()
mm: rmap: call page_check_address() with sync enabled to avoid racy check
mm: thp: move pmd check inside ptl for freeze_page()
vmlinux.lds: account for destructor sections
gcov: add support for gcc version >= 6
mm, meminit: ensure node is online before checking whether pages are uninitialised
mm, meminit: always return a valid node from early_pfn_to_nid
kasan/quarantine: fix bugs on qlist_move_cache()
uapi: export lirc.h header
madvise_free, thp: fix madvise_free_huge_pmd return value after splitting
Revert "scripts/gdb: add documentation example for radix tree"
Revert "scripts/gdb: add a Radix Tree Parser"
scripts/gdb: Perform path expansion to lx-symbol's arguments
scripts/gdb: add constants.py to .gitignore
scripts/gdb: rebuild constants.py on dependancy change
scripts/gdb: silence 'nothing to do' message
kasan: add newline to messages
mm, compaction: prevent VM_BUG_ON when terminating freeing scanner
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The VM_BUG_ON_PAGE in page_move_anon_rmap() is more trouble than it's
worth: the syzkaller fuzzer hit it again. It's still wrong for some THP
cases, because linear_page_index() was never intended to apply to
addresses before the start of a vma.
That's easily fixed with a signed long cast inside linear_page_index();
and Dmitry has tested such a patch, to verify the false positive. But
why extend linear_page_index() just for this case? when the avoidance in
page_move_anon_rmap() has already grown ugly, and there's no reason for
the check at all (nothing else there is using address or index).
Remove address arg from page_move_anon_rmap(), remove VM_BUG_ON_PAGE,
remove CONFIG_DEBUG_VM PageTransHuge adjustment.
And one more thing: should the compound_head(page) be done inside or
outside page_move_anon_rmap()? It's usually pushed down to the lowest
level nowadays (and mm/memory.c shows no other explicit use of it), so I
think it's better done in page_move_anon_rmap() than by caller.
Fixes: 0798d3c022dc ("mm: thp: avoid false positive VM_BUG_ON_PAGE in page_move_anon_rmap()")
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1607120444540.12528@eggly.anvils
Signed-off-by: Hugh Dickins <hughd@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: <stable@vger.kernel.org> [4.5+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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I found a race condition triggering VM_BUG_ON() in freeze_page(), when
running a testcase with 3 processes:
- process 1: keep writing thp,
- process 2: keep clearing soft-dirty bits from virtual address of process 1
- process 3: call migratepages for process 1,
The kernel message is like this:
kernel BUG at /src/linux-dev/mm/huge_memory.c:3096!
invalid opcode: 0000 [#1] SMP
Modules linked in: cfg80211 rfkill crc32c_intel ppdev serio_raw pcspkr virtio_balloon virtio_console parport_pc parport pvpanic acpi_cpufreq tpm_tis tpm i2c_piix4 virtio_blk virtio_net ata_generic pata_acpi floppy virtio_pci virtio_ring virtio
CPU: 0 PID: 28863 Comm: migratepages Not tainted 4.6.0-v4.6-160602-0827-+ #2
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
task: ffff880037320000 ti: ffff88007cdd0000 task.ti: ffff88007cdd0000
RIP: 0010:[<ffffffff811f8e06>] [<ffffffff811f8e06>] split_huge_page_to_list+0x496/0x590
RSP: 0018:ffff88007cdd3b70 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff88007c7b88c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000700000200 RDI: ffffea0003188000
RBP: ffff88007cdd3bb8 R08: 0000000000000001 R09: 00003ffffffff000
R10: ffff880000000000 R11: ffffc000001fffff R12: ffffea0003188000
R13: ffffea0003188000 R14: 0000000000000000 R15: 0400000000000080
FS: 00007f8ec241d740(0000) GS:ffff88007dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ec1f3ed20 CR3: 000000003707b000 CR4: 00000000000006f0
Call Trace:
? list_del+0xd/0x30
queue_pages_pte_range+0x4d1/0x590
__walk_page_range+0x204/0x4e0
walk_page_range+0x71/0xf0
queue_pages_range+0x75/0x90
? queue_pages_hugetlb+0x190/0x190
? new_node_page+0xc0/0xc0
? change_prot_numa+0x40/0x40
migrate_to_node+0x71/0xd0
do_migrate_pages+0x1c3/0x210
SyS_migrate_pages+0x261/0x290
entry_SYSCALL_64_fastpath+0x1a/0xa4
Code: e8 b0 87 fb ff 0f 0b 48 c7 c6 30 32 9f 81 e8 a2 87 fb ff 0f 0b 48 c7 c6 b8 46 9f 81 e8 94 87 fb ff 0f 0b 85 c0 0f 84 3e fd ff ff <0f> 0b 85 c0 0f 85 a6 00 00 00 48 8b 75 c0 4c 89 f7 41 be f0 ff
RIP split_huge_page_to_list+0x496/0x590
I'm not sure of the full scenario of the reproduction, but my debug
showed that split_huge_pmd_address(freeze=true) returned without running
main code of pmd splitting because pmd_present(*pmd) in precheck somehow
returned 0. If this happens, the subsequent try_to_unmap() fails and
returns non-zero (because page_mapcount() still > 0), and finally
VM_BUG_ON() fires. This patch tries to fix it by prechecking pmd state
inside ptl.
Link: http://lkml.kernel.org/r/1466990929-7452-1-git-send-email-n-horiguchi@ah.jp.nec.com
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If CONFIG_KASAN is enabled and gcc is configured with
--disable-initfini-array and/or gold linker is used, gcc emits
.ctors/.dtors and .text.startup/.text.exit sections instead of
.init_array/.fini_array. .dtors section is not explicitly accounted in
the linker script and messes vvar/percpu layout.
We want:
ffffffff822bfd80 D _edata
ffffffff822c0000 D __vvar_beginning_hack
ffffffff822c0000 A __vvar_page
ffffffff822c0080 0000000000000098 D vsyscall_gtod_data
ffffffff822c1000 A __init_begin
ffffffff822c1000 D init_per_cpu__irq_stack_union
ffffffff822c1000 A __per_cpu_load
ffffffff822d3000 D init_per_cpu__gdt_page
We got:
ffffffff8279a600 D _edata
ffffffff8279b000 A __vvar_page
ffffffff8279c000 A __init_begin
ffffffff8279c000 D init_per_cpu__irq_stack_union
ffffffff8279c000 A __per_cpu_load
ffffffff8279e000 D __vvar_beginning_hack
ffffffff8279e080 0000000000000098 D vsyscall_gtod_data
ffffffff827ae000 D init_per_cpu__gdt_page
This happens because __vvar_page and .vvar get different addresses in
arch/x86/kernel/vmlinux.lds.S:
. = ALIGN(PAGE_SIZE);
__vvar_page = .;
.vvar : AT(ADDR(.vvar) - LOAD_OFFSET) {
/* work around gold bug 13023 */
__vvar_beginning_hack = .;
Discard .dtors/.fini_array/.text.exit, since we don't call dtors.
Merge .text.startup into init text.
Link: http://lkml.kernel.org/r/1467386363-120030-1-git-send-email-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: <stable@vger.kernel.org> [4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This header contains the userspace API for lirc.
This is a fixup for commit b7be755733dc ("[media] bz#75751: Move
internal header file lirc.h to uapi/"). It moved the header to the
right place, but it forgot to add it at Kbuild. So, despite being at
uapi, it is not copied to the right place.
Fixes: b7be755733dc44c72 ("[media] bz#75751: Move internal header file lirc.h to uapi/")
Link: http://lkml.kernel.org/r/320c765d32bfc82c582e336d52ffe1026c73c644.1468439021.git.mchehab@s-opensource.com
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: Alec Leamas <leamas.alec@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://people.freedesktop.org/~syeh/repos_linux into drm-fixes
A bunch of vmwgfx fixes that fix a black screen issue on latest distros/hw combos.
* 'drm-vmwgfx-fixes' of git://people.freedesktop.org/~syeh/repos_linux:
drm/vmwgfx: Fix error paths when mapping framebuffer
drm/vmwgfx: Fix corner case screen target management
drm/vmwgfx: Delay pinning fbdev framebuffer until after mode set
drm/vmwgfx: Check pin count before attempting to move a buffer
drm/ttm: Make ttm_bo_mem_compat available
drm/vmwgfx: Add an option to change assumed FB bpp
drm/vmwgfx: Work around mode set failure in 2D VMs
drm/vmwgfx: Add a check to handle host message failure
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There are cases where it is desired to see if a proposed placement
is compatible with a buffer object before calling ttm_bo_validate().
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Cc: <stable@vger.kernel.org>
---
This is the first of a 3-patch series to fix a black screen
issue observed on Ubuntu 16.04 server.
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"This contains three commits to fix memory corruption bugs with certain
Apple AirPort cards, plus a fix for a X86_BUG() ID definitions collision
bug in asm/cpufeatures.h"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/quirks: Add early quirk to reset Apple AirPort card
x86/quirks: Reintroduce scanning of secondary buses
x86/quirks: Apply nvidia_bugs quirk only on root bus
x86/cpu: Fix duplicated X86_BUG(9) macro
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The EFI firmware on Macs contains a full-fledged network stack for
downloading OS X images from osrecovery.apple.com. Unfortunately
on Macs introduced 2011 and 2012, EFI brings up the Broadcom 4331
wireless card on every boot and leaves it enabled even after
ExitBootServices has been called. The card continues to assert its IRQ
line, causing spurious interrupts if the IRQ is shared. It also corrupts
memory by DMAing received packets, allowing for remote code execution
over the air. This only stops when a driver is loaded for the wireless
card, which may be never if the driver is not installed or blacklisted.
The issue seems to be constrained to the Broadcom 4331. Chris Milsted
has verified that the newer Broadcom 4360 built into the MacBookPro11,3
(2013/2014) does not exhibit this behaviour. The chances that Apple will
ever supply a firmware fix for the older machines appear to be zero.
The solution is to reset the card on boot by writing to a reset bit in
its mmio space. This must be done as an early quirk and not as a plain
vanilla PCI quirk to successfully combat memory corruption by DMAed
packets: Matthew Garrett found out in 2012 that the packets are written
to EfiBootServicesData memory (http://mjg59.dreamwidth.org/11235.html).
This type of memory is made available to the page allocator by
efi_free_boot_services(). Plain vanilla PCI quirks run much later, in
subsys initcall level. In-between a time window would be open for memory
corruption. Random crashes occurring in this time window and attributed
to DMAed packets have indeed been observed in the wild by Chris
Bainbridge.
When Matthew Garrett analyzed the memory corruption issue in 2012, he
sought to fix it with a grub quirk which transitions the card to D3hot:
http://git.savannah.gnu.org/cgit/grub.git/commit/?id=9d34bb85da56
This approach does not help users with other bootloaders and while it
may prevent DMAed packets, it does not cure the spurious interrupts
emanating from the card. Unfortunately the card's mmio space is
inaccessible in D3hot, so to reset it, we have to undo the effect of
Matthew's grub patch and transition the card back to D0.
Note that the quirk takes a few shortcuts to reduce the amount of code:
The size of BAR 0 and the location of the PM capability is identical
on all affected machines and therefore hardcoded. Only the address of
BAR 0 differs between models. Also, it is assumed that the BCMA core
currently mapped is the 802.11 core. The EFI driver seems to always take
care of this.
Michael Büsch, Bjorn Helgaas and Matt Fleming contributed feedback
towards finding the best solution to this problem.
The following should be a comprehensive list of affected models:
iMac13,1 2012 21.5" [Root Port 00:1c.3 = 8086:1e16]
iMac13,2 2012 27" [Root Port 00:1c.3 = 8086:1e16]
Macmini5,1 2011 i5 2.3 GHz [Root Port 00:1c.1 = 8086:1c12]
Macmini5,2 2011 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1c12]
Macmini5,3 2011 i7 2.0 GHz [Root Port 00:1c.1 = 8086:1c12]
Macmini6,1 2012 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1e12]
Macmini6,2 2012 i7 2.3 GHz [Root Port 00:1c.1 = 8086:1e12]
MacBookPro8,1 2011 13" [Root Port 00:1c.1 = 8086:1c12]
MacBookPro8,2 2011 15" [Root Port 00:1c.1 = 8086:1c12]
MacBookPro8,3 2011 17" [Root Port 00:1c.1 = 8086:1c12]
MacBookPro9,1 2012 15" [Root Port 00:1c.1 = 8086:1e12]
MacBookPro9,2 2012 13" [Root Port 00:1c.1 = 8086:1e12]
MacBookPro10,1 2012 15" [Root Port 00:1c.1 = 8086:1e12]
MacBookPro10,2 2012 13" [Root Port 00:1c.1 = 8086:1e12]
For posterity, spurious interrupts caused by the Broadcom 4331 wireless
card resulted in splats like this (stacktrace omitted):
irq 17: nobody cared (try booting with the "irqpoll" option)
handlers:
[<ffffffff81374370>] pcie_isr
[<ffffffffc0704550>] sdhci_irq [sdhci] threaded [<ffffffffc07013c0>] sdhci_thread_irq [sdhci]
[<ffffffffc0a0b960>] azx_interrupt [snd_hda_codec]
Disabling IRQ #17
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=79301
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=111781
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=728916
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=895951#c16
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1009819
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1098621
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1149632#c5
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1279130
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1332732
Tested-by: Konstantin Simanov <k.simanov@stlk.ru> # [MacBookPro8,1]
Tested-by: Lukas Wunner <lukas@wunner.de> # [MacBookPro9,1]
Tested-by: Bryan Paradis <bryan.paradis@gmail.com> # [MacBookPro9,2]
Tested-by: Andrew Worsley <amworsley@gmail.com> # [MacBookPro10,1]
Tested-by: Chris Bainbridge <chris.bainbridge@gmail.com> # [MacBookPro10,2]
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Chris Milsted <cmilsted@redhat.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Michael Buesch <m@bues.ch>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: b43-dev@lists.infradead.org
Cc: linux-pci@vger.kernel.org
Cc: linux-wireless@vger.kernel.org
Cc: stable@vger.kernel.org
Cc: stable@vger.kernel.org # 123456789abc: x86/quirks: Apply nvidia_bugs quirk only on root bus
Cc: stable@vger.kernel.org # 123456789abc: x86/quirks: Reintroduce scanning of secondary buses
Link: http://lkml.kernel.org/r/48d0972ac82a53d460e5fce77a07b2560db95203.1465690253.git.lukas@wunner.de
[ Did minor readability edits. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"One ACPI EC driver regression fix (code ordering) and three reverts of
ACPICA commits, one that introduced a problem and two unsuccessful
attempted fixes on top of it.
Specifics:
- Fix a recent regression in the ACPI EC driver introduced by a fix
of another problem that uncovered a latent code ordering issue in
the driver (Lv Zheng).
- Revert a recent ACPICA commit that attempted to address a lock
ordering issue introduced by a previous fix, but caused Dell
Precision 5510 to fail to boot, revert that previous fix too and
finally revert the commit that caused the original problem (a
deadlock in the ACPICA code) to happen (Rafael Wysocki)"
* tag 'acpi-urgent-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis"
Revert "ACPICA: Namespace: Fix deadlock triggered by MLC support in dynamic table loading"
Revert "ACPICA: Namespace: Fix namespace/interpreter lock ordering"
ACPI / EC: Fix code ordering issue in ec_remove_handlers()
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If/Else/While execution to per-table basis"
Revert commit 3d4b7ae96d81 (ACPI 2.0 / AML: Improve module level
execution by moving the If/Else/While execution to per-table basis)
that enabled the execution of module-level AML after loading each
table (rather than after all AML tables have been loaded), but
overlooked locking issues resulting from that change.
Fixes: 3d4b7ae96d81 (ACPI 2.0 / AML: Improve module level execution by moving the If/Else/While execution to per-table basis)
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
posix_acl: de-union a_refcount and a_rcu
nfs_atomic_open(): prevent parallel nfs_lookup() on a negative hashed
Use the right predicate in ->atomic_open() instances
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Currently the two are unioned together, but I don't think that's safe.
It looks like get_cached_acl could race with the last put in
posix_acl_release. get_cached_acl calls atomic_inc_not_zero on
a_refcount, but that field could have already been clobbered by
call_rcu, and may no longer be zero. Fix this by de-unioning the two
fields.
Fixes: b8a7a3a66747 (posix_acl: Inode acl caching fixes)
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"All of these fix recent regressions in ACPICA, in the ACPI PCI IRQ
management code and in the ACPI AML debugger.
Specifics:
- Fix a lock ordering issue in ACPICA introduced by a recent commit
that attempted to fix a deadlock in the dynamic table loading code
which in turn appeared after changes related to the handling of
module-level AML also made in this cycle (Lv Zheng).
- Fix a recent regression in the ACPI IRQ management code that may
cause PCI drivers to be unable to register an IRQ if that IRQ
happens to be shared with a device on the ISA bus, like the
parallel port, by reverting one commit entirely and restoring the
previous behavior in two other places (Sinan Kaya).
- Fix a recent regression in the ACPI AML debugger introduced by the
commit that removed incorrect usage of IS_ERR_VALUE() from multiple
places (Lv Zheng)"
* tag 'acpi-4.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / debugger: Fix regression introduced by IS_ERR_VALUE() removal
ACPICA: Namespace: Fix namespace/interpreter lock ordering
ACPI,PCI,IRQ: separate ISA penalty calculation
Revert "ACPI, PCI, IRQ: remove redundant code in acpi_irq_penalty_init()"
ACPI,PCI,IRQ: factor in PCI possible
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* acpica-fixes:
ACPICA: Namespace: Fix namespace/interpreter lock ordering
* acpi-pci-fixes:
ACPI,PCI,IRQ: separate ISA penalty calculation
Revert "ACPI, PCI, IRQ: remove redundant code in acpi_irq_penalty_init()"
ACPI,PCI,IRQ: factor in PCI possible
* acpi-debug-fixes:
ACPI / debugger: Fix regression introduced by IS_ERR_VALUE() removal
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Trying to make the ISA and PCI init functionality common turned out
to be a bad idea, because the ISA path depends on external
functionality.
Restore the previous behavior and limit the refactoring to PCI
interrupts only.
Fixes: 1fcb6a813c4f "ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init()"
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Tested-by: Wim Osterholt <wim@djo.tudelft.nl>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Pull networking fixes from David Miller:
1) All users of AF_PACKET's fanout feature want a symmetric packet
header hash for load balancing purposes, so give it to them.
2) Fix vlan state synchronization in e1000e, from Jarod Wilson.
3) Use correct socket pointer in ip_skb_dst_mtu(), from Shmulik
Ladkani.
4) mlx5 bug fixes from Mohamad Haj Yahia, Daniel Jurgens, Matthew
Finlay, Rana Shahout, and Shaker Daibes. Mostly to do with
operation timeouts and PCI error handling.
5) Fix checksum handling in mirred packet action, from WANG Cong.
6) Set skb->dev correctly when transmitting in !protect_frames case of
macsec driver, from Daniel Borkmann.
7) Fix MTU calculation in geneve driver, from Haishuang Yan.
8) Missing netif_napi_del() in unregister path of qeth driver, from
Ursula Braun.
9) Handle malformed route netlink messages in decnet properly, from
Vergard Nossum.
10) Memory leak of percpu data in ipv6 routing code, from Martin KaFai
Lau.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
ipv6: Fix mem leak in rt6i_pcpu
net: fix decnet rtnexthop parsing
cxgb4: update latest firmware version supported
net/mlx5: Avoid setting unused var when modifying vport node GUID
bonding: fix enslavement slave link notifications
r8152: fix runtime function for RTL8152
qeth: delete napi struct when removing a qeth device
Revert "fsl/fman: fix error handling"
fsl/fman: fix error handling
cdc_ncm: workaround for EM7455 "silent" data interface
RDS: fix rds_tcp_init() error path
geneve: fix max_mtu setting
net: phy: dp83867: Fix initialization of PHYCR register
enc28j60: Fix race condition in enc28j60 driver
net: stmmac: Fix null-function call in ISR on stmmac1000
tipc: fix nl compat regression for link statistics
net: bcmsysport: Device stats are unsigned long
macsec: set actual real device for xmit when !protect_frames
net_sched: fix mirrored packets checksum
packet: Use symmetric hash for PACKET_FANOUT_HASH.
...
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Similar to commit 9b368814b336 ("net: fix bridge multicast packet checksum validation")
we need to fixup the checksum for CHECKSUM_COMPLETE when
pushing skb on RX path. Otherwise we get similar splats.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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People who use PACKET_FANOUT_HASH want a symmetric hash, meaning that
they want packets going in both directions on a flow to hash to the
same bucket.
The core kernel SKB hash became non-symmetric when the ipv6 flow label
and other entities were incorporated into the standard flow hash order
to increase entropy.
But there are no users of PACKET_FANOUT_HASH who want an assymetric
hash, they all want a symmetric one.
Therefore, use the flow dissector to compute a flat symmetric hash
over only the protocol, addresses and ports. This hash does not get
installed into and override the normal skb hash, so this change has
no effect whatsoever on the rest of the stack.
Reported-by: Eric Leblond <eric@regit.org>
Tested-by: Eric Leblond <eric@regit.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current implementation does not handle timeout in case of command
with callback request, and this can lead to deadlock if the command
doesn't get fw response.
Add delayed callback timeout work before posting the command to fw.
In case of real fw command completion we will cancel the delayed work.
In case of fw command timeout the callback timeout handler will be
called and it will simulate fw completion with timeout error.
Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ether_addr_equal_64bits() requires some care about its arguments,
namely that 8 bytes might be read, even if last 2 byte values are not
used.
KASan detected a violation with null_mac_addr and lacpdu_mcast_addr
in bond_3ad.c
Same problem with mac_bcast[] and mac_v6_allmcast[] in bond_alb.c :
Although the 8-byte alignment was there, KASan would detect out
of bound accesses.
Fixes: 815117adaf5b ("bonding: use ether_addr_equal_unaligned for bond addr compare")
Fixes: bb54e58929f3 ("bonding: Verify RX LACPDU has proper dest mac-addr")
Fixes: 885a136c52a8 ("bonding: use compare_ether_addr_64bits() in ALB")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ip_skb_dst_mtu uses skb->sk, assuming it is an AF_INET socket (e.g. it
calls ip_sk_use_pmtu which casts sk as an inet_sk).
However, in the case of UDP tunneling, the skb->sk is not necessarily an
inet socket (could be AF_PACKET socket, or AF_UNSPEC if arriving from
tun/tap).
OTOH, the sk passed as an argument throughout IP stack's output path is
the one which is of PMTU interest:
- In case of local sockets, sk is same as skb->sk;
- In case of a udp tunnel, sk is the tunneling socket.
Fix, by passing ip_finish_output's sk to ip_skb_dst_mtu.
This augments 7026b1ddb6 'netfilter: Pass socket pointer down through okfn().'
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fix from Miklos Szeredi:
"This makes sure userspace filesystems are not broken by the parallel
lookups and readdir feature"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: serialize dirops by default
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Negotiate with userspace filesystems whether they support parallel readdir
and lookup. Disable parallelism by default for fear of breaking fuse
filesystems.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 9902af79c01a ("parallel lookups: actual switch to rwsem")
Fixes: d9b3dbdcfd62 ("fuse: switch to ->iterate_shared()")
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git://anongit.freedesktop.org/drm-intel into drm-fixes
here's a batch of i915 fixes for 4.7.
* tag 'drm-intel-fixes-2016-06-30' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
drm/i915: Removing PCI IDs that are no longer listed as Kabylake.
drm/i915: Add more Kabylake PCI IDs.
drm/i915: Avoid early timeout during AUX transfers
drm/i915/hsw: Avoid early timeout during LCPLL disable/restore
drm/i915/lpt: Avoid early timeout during FDI PHY reset
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915: Refresh cached DP port register value on resume
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This is unusual. Usually IDs listed on early stages of platform
definition are kept there as reserved for later use.
However these IDs here are not listed anymore in any of steppings
and devices IDs tables for Kabylake on configurations overview
section of BSpec.
So it is better removing them before they become used in any
other future platform.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466718636-19675-2-git-send-email-rodrigo.vivi@intel.com
(cherry picked from commit a922eb8d4581c883c37ce6e12dca9ff2cb1ea723)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The spec has been updated adding new PCI IDs.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1466718636-19675-1-git-send-email-rodrigo.vivi@intel.com
(cherry picked from commit 33d9391d3020e069dca98fa87a604c037beb2b9e)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB and PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 4.7-rc6.
Nothing major here, all are described in the shortlog below. All have
been in linux-next with no reported issues"
* tag 'usb-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: don't free bandwidth_mutex too early
USB: EHCI: declare hostpc register as zero-length array
phy-sun4i-usb: Fix irq free conditions to match request conditions
phy: bcm-ns-usb2: checking the wrong variable
phy-sun4i-usb: fix missing __iomem *
phy: phy-sun4i-usb: Fix optional gpios failing probe
phy: rockchip-dp: fix return value check in rockchip_dp_phy_probe()
phy: rcar-gen3-usb2: fix unexpected repeat interrupts of VBUS change
usb: common: otg-fsm: add license to usb-otg-fsm
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The HOSTPC extension registers found in some EHCI implementations form
a variable-length array, with one element for each port. Therefore
the hostpc field in struct ehci_regs should be declared as a
zero-length array, not a single-element array.
This fixes a problem reported by UBSAN.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Wilfried Klaebe <linux-kernel@lebenslange-mailadresse.de>
Tested-by: Wilfried Klaebe <linux-kernel@lebenslange-mailadresse.de>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull KVM fixes from Paolo Bonzini:
"ARM and x86 fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: nVMX: VMX instructions: fix segment checks when L1 is in long mode.
KVM: LAPIC: cap __delay at lapic_timer_advance_ns
KVM: x86: move nsec_to_cycles from x86.c to x86.h
pvclock: Get rid of __pvclock_read_cycles in function pvclock_read_flags
pvclock: Cleanup to remove function pvclock_get_nsec_offset
pvclock: Add CPU barriers to get correct version value
KVM: arm/arm64: Stop leaking vcpu pid references
arm64: KVM: fix build with CONFIG_ARM_PMU disabled
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/ARM Fixes for v4.7-rc6:
Fixes a build issue without CONFIG_ARM_PMU and plugs pid leak on arm/arm64.
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When CONFIG_ARM_PMU is disabled, we get the following build error:
arch/arm64/kvm/sys_regs.c: In function 'pmu_counter_idx_valid':
arch/arm64/kvm/sys_regs.c:564:27: error: 'ARMV8_PMU_CYCLE_IDX' undeclared (first use in this function)
if (idx >= val && idx != ARMV8_PMU_CYCLE_IDX)
^
arch/arm64/kvm/sys_regs.c:564:27: note: each undeclared identifier is reported only once for each function it appears in
arch/arm64/kvm/sys_regs.c: In function 'access_pmu_evcntr':
arch/arm64/kvm/sys_regs.c:592:10: error: 'ARMV8_PMU_CYCLE_IDX' undeclared (first use in this function)
idx = ARMV8_PMU_CYCLE_IDX;
^
arch/arm64/kvm/sys_regs.c: In function 'access_pmu_evtyper':
arch/arm64/kvm/sys_regs.c:638:14: error: 'ARMV8_PMU_CYCLE_IDX' undeclared (first use in this function)
if (idx == ARMV8_PMU_CYCLE_IDX)
^
arch/arm64/kvm/hyp/switch.c:86:15: error: 'ARMV8_PMU_USERENR_MASK' undeclared (first use in this function)
write_sysreg(ARMV8_PMU_USERENR_MASK, pmuserenr_el0);
This patch fixes the build with CONFIG_ARM_PMU disabled.
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm fixes from Thierry Reding:
"One more fix for some fallout observed after the introduction of the
atomic API"
* tag 'pwm/for-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: Fix pwm_apply_args()
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Commit 5ec803edcb70 ("pwm: Add core infrastructure to allow atomic
updates"), implemented pwm_disable() as a wrapper around
pwm_apply_state(), and then, commit ef2bf4997f7d ("pwm: Improve args
checking in pwm_apply_state()") added missing checks on the ->period
value in pwm_apply_state() to ensure we were not passing inappropriate
values to the ->config() or ->apply() methods.
The conjunction of these 2 commits led to a case where pwm_disable()
was no longer succeeding, thus preventing the polarity setting done
in pwm_apply_args().
Set a valid period in pwm_apply_args() to ensure polarity setting
won't be rejected.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Suggested-by: Brian Norris <briannorris@chromium.org>
Fixes: 5ec803edcb70 ("pwm: Add core infrastructure to allow atomic updates")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD fixes from Lee Jones:
"Contained are some standard fixes and unusually an extension to the
Reset API. Some of those changes are required to fix a bug introduced
in -rc1, which introduces extra 'reset line checks' i.e. whether the
line is shared or not. If a line is shared and the new *_shared() API
is not used, the request fails with an error. This breaks USB in v4.7
for ST's platforms.
Admittedly, there are some patches contained in our (MFD/Reset)
immutable branch which are not true -fixes, but there isn't anything I
can do about that. Rest assured though, there aren't any API
'changes'. Everything is the same from the consumer's perspective.
- Use new reset_*_get_shared() variant to prevent reset line
obtainment failure (Fixes commit 0b52297f2288: "reset: Add support
for shared reset controls")
- Fix unintentional switch() fall-through into error path
- Fix uninitialised variable compiler warning"
* tag 'mfd-fixes-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: da9053: Fix compiler warning message for uninitialised variable
mfd: max77620: Fix FPS switch statements
phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared
usb: dwc3: st: Inform the reset framework that our reset line may be shared
usb: host: ehci-st: Inform the reset framework that our reset line may be shared
usb: host: ohci-st: Inform the reset framework that our reset line may be shared
reset: TRIVIAL: Add line break at same place for similar APIs
reset: Supply *_shared variant calls when using *_optional APIs
reset: Supply *_shared variant calls when using of_* API
reset: Ensure drivers are explicit when requesting reset lines
reset: Reorder inline reset_control_get*() wrappers
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