TI DRA7xx host bridge driver
Mark driver as broken (Richard Cochran)
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Merge tag 'pci-v4.4-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixlet from Bjorn Helgaas:
"This marks the TI DRA7xx host bridge driver as broken. Apparently it
has never worked without some additional out-of-tree code, so I'm
going to mark it broken now and remove it completely next cycle unless
it's fixed"
* tag 'pci-v4.4-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: dra7xx: Mark driver as broken
Just one obvious fix that adds a missing function argument in
ACPI code introduced recently (Kees Cook).
/
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Merge tag 'pm+acpi-4.4-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Just one obvious fix that adds a missing function argument in ACPI
code introduced recently (Kees Cook)"
* tag 'pm+acpi-4.4-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / property: avoid leaking format string into kobject name
Late fixes for 4.4 are three fixes for drivers which include a
revert of mic-x100 fix which is causing regression, xgene fix for
double IRQ and async_tx fix to use GFP_NOWAIT
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Merge tag 'dmaengine-fix-4.4' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"Late fixes for 4.4 are three fixes for drivers which include a revert
of mic-x100 fix which is causing regression, xgene fix for double IRQ
and async_tx fix to use GFP_NOWAIT"
* tag 'dmaengine-fix-4.4' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: xgene-dma: Fix double IRQ issue by setting IRQ_DISABLE_UNLAZY flag
async_tx: use GFP_NOWAIT rather than GFP_IO
dmaengine: Revert "dmaengine: mic_x100: add missing spin_unlock"
Mark the dra7xx PCI host driver as broken. This driver was first merged in
v3.17 and has never worked. Although the driver compiles just fine, it is
missing an essential device reset. If the driver is included, the kernel
locks up hard shortly after booting, before any console output appears.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The dmi_ver wasn't updated correctly before the dmi_decode method run
to save the uuid.
That resulted in "dmidecode -s system-uuid" and
/sys/class/dmi/id/product_uuid disagreeing. The latter was buggy and
this fixes it.
Reported-by: Federico Simoncelli <fsimonce@redhat.com>
Fixes: 9f9c9cbb60 ("drivers/firmware/dmi_scan.c: fetch dmi version from SMBIOS if it exists")
Fixes: 79bae42d51 ("dmi_scan: refactor dmi_scan_machine(), {smbios,dmi}_present()")
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
The dn->name is expected to be used as a literal, so add the missing
"%s".
Fixes: 263b4c1a64 (ACPI / property: Expose data-only subnodes via sysfs)
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull drm nouveau fix from Dave Airlie:
"Still not back to work, but I decided to forward this fix"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau/gr/nv40: fix oops in interrupt handler
The patches include fixes for:
* Two build issues, one in the ipmmu-vmsa driver and one for the
new generic dma-api implemention used on arm64
* A performance fix for said dma-api implemention
* An issue caused by a wrong offset in map_sg in the same code
as above
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Merge tag 'iommu-fixes-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- Two build issues, one in the ipmmu-vmsa driver and one for the new
generic dma-api implemention used on arm64
- A performance fix for said dma-api implemention
- An issue caused by a wrong offset in map_sg in the same code as above
* tag 'iommu-fixes-v4.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/dma: Use correct offset in map_sg
iommu/ipmmu-vmsa: Don't truncate ttbr if LPAE is not enabled
iommu/dma: Avoid unlikely high-order allocations
iommu/dma: Add some missing #includes
When mapping a non-page-aligned scatterlist entry, we copy the original
offset to the output DMA address before aligning it to hand off to
iommu_map_sg(), then later adding the IOVA page address portion to get
the final mapped address. However, when the IOVA page size is smaller
than the CPU page size, it is the offset within the IOVA page we want,
not that within the CPU page, which can easily be larger than an IOVA
page and thus result in an incorrect final address.
Fix the bug by taking only the IOVA-aligned part of the offset as the
basis of the DMA address, not the whole thing.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
For interrupt controller that doesn't support irq_disable and hardware
with level interrupt, an extra interrupt can be pending. This patch fixes
the issue by setting IRQ_DISABLE_UNLAZY flag for the interrupt line.
Reference: http://git.kernel.org/tip/e9849777d0e27cdd2902805be51da73e7c79578c
Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
reported mid cycle. Unfortunately, some of them took a bit long to get proper
testing and feedback.
* Assign the default MTD name earlier in the registration process, so
partition parsers (like cmdlinepart) see the right name. Without this, some
systems may come up with unpartitioned flash. This was a v4.4-rc1
regression.
* Revert some new Winbond SPI NOR flash unlocking/locking support; new code in
v4.4 caused regressions on some Spansion flash.
* Fix mis-typed parameter ordering in SPI NOR unlock function; this bug was
introduced in v4.4-rc1.
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Merge tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd
Pull MTD fixes from Brian Norris:
"Three last MTD fixes for v4.4. These are all fixes for regressions
and bugs reported mid cycle. Unfortunately, some of them took a bit
long to get proper testing and feedback.
- Assign the default MTD name earlier in the registration process, so
partition parsers (like cmdlinepart) see the right name. Without
this, some systems may come up with unpartitioned flash. This was
a v4.4-rc1 regression.
- Revert some new Winbond SPI NOR flash unlocking/locking support;
new code in v4.4 caused regressions on some Spansion flash.
- Fix mis-typed parameter ordering in SPI NOR unlock function; this
bug was introduced in v4.4-rc1"
* tag 'for-linus-20160106' of git://git.infradead.org/linux-mtd:
mtd: spi-nor: fix stm_is_locked_sr() parameters
mtd: spi-nor: fix Spansion regressions (aliased with Winbond)
mtd: fix cmdlinepart parser, early naming for auto-filled MTD
Pull networking fixes from David Miller:
"As usual, there are a couple straggler bug fixes:
1) qlcnic_alloc_mbx_args() error returns are not checked in qlcnic
driver. Fix from Insu Yun.
2) SKB refcounting bug in connector, from Florian Westphal.
3) vrf_get_saddr() has to propagate fib_lookup() errors to it's
callers, from David Ahern.
4) Fix AF_UNIX splice/bind deadlock, from Rainer Weikusat.
5) qdisc_rcu_free() fails to free the per-cpu qstats. Fix from John
Fastabend.
6) vmxnet3 driver passes wrong page to dma_map_page(), fix from
Shrikrishna Khare.
7) Don't allow zero cwnd in tcp_cwnd_reduction(), from Yuchung Cheng"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
tcp: fix zero cwnd in tcp_cwnd_reduction
Driver: Vmxnet3: Fix regression caused by 5738a09
net: qmi_wwan: Add WeTelecom-WPD600N
mkiss: fix scribble on freed memory
net: possible use after free in dst_release
net: sched: fix missing free per cpu on qstats
ARM: net: bpf: fix zero right shift
6pack: fix free memory scribbles
net: filter: make JITs zero A for SKF_AD_ALU_XOR_X
bridge: Only call /sbin/bridge-stp for the initial network namespace
af_unix: Fix splice-bind deadlock
net: Propagate lookup failure in l3mdev_get_saddr to caller
r8152: add reset_resume function
connector: bump skb->users before callback invocation
cxgb4: correctly handling failed allocation
qlcnic: correctly handle qlcnic_alloc_mbx_args
Reported-by: Bingkuo Liu <bingkuol@vmware.com>
Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The WeTelecom-WPD600N is an LTE module that, in addition to supporting most
"normal" bands, also supports LTE over 450MHz. Manual testing showed that
only interface number three replies to QMI messages.
Cc: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
commit d79f16c046 fixed a user triggerable
scribble on free memory but added a new one which allows the user to
scribble even more and user controlled data into freed space.
As with 6pack we need to halt the queue before we free the buffers, because
the transmit logic is not protected by the semaphore.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit e958e079e2 ("dmaengine: mic_x100: add missing
spin_unlock").
The above patch is incorrect. There is nothing wrong with the original
code. The spin_lock is acquired in the "prep" functions and released
in "submit".
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
commit acf673a318 fixed a user triggerable free
memory scribble but in doing so replaced it with a different one that allows
the user to control the data and scribble even more.
sixpack_close is called by the tty layer in tty context. The tty context is
protected by sp_get() and sp_put(). However network layer activity via
sp_xmit() is not protected this way. We must therefore stop the queue
otherwise the user gets to dump a buffer mostly of their choice into freed
kernel pages.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
stm_is_locked_sr() takes the status register (SR) value as the last
parameter, not the second.
Reported-by: Bayi Cheng <bayi.cheng@mediatek.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Bayi Cheng <bayi.cheng@mediatek.com>
Spansion and Winbond have occasionally used the same manufacturer ID,
and they don't support the same features. Particularly, writing SR=0
seems to break read access for Spansion's s25fl064k. Unfortunately, we
don't currently have a way to differentiate these Spansion and Winbond
parts, so rather than regressing support for these Spansion flash, let's
drop the new Winbond lock/unlock support for now. We can try to address
Winbond support during the next release cycle.
Original discussion:
http://patchwork.ozlabs.org/patch/549173/http://patchwork.ozlabs.org/patch/553683/
Fixes: 357ca38d47 ("mtd: spi-nor: support lock/unlock/is_locked for Winbond")
Fixes: c6fc2171b2 ("mtd: spi-nor: disable protection for Winbond flash at startup")
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reported-by: Felix Fietkau <nbd@openwrt.org>
Cc: Felix Fietkau <nbd@openwrt.org>
Commands run in a vrf context are not failing as expected on a route lookup:
root@kenny:~# ip ro ls table vrf-red
unreachable default
root@kenny:~# ping -I vrf-red -c1 -w1 10.100.1.254
ping: Warning: source address might be selected on device other than vrf-red.
PING 10.100.1.254 (10.100.1.254) from 0.0.0.0 vrf-red: 56(84) bytes of data.
--- 10.100.1.254 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 999ms
Since the vrf table does not have a route for 10.100.1.254 the ping
should have failed. The saddr lookup causes a full VRF table lookup.
Propogating a lookup failure to the user allows the command to fail as
expected:
root@kenny:~# ping -I vrf-red -c1 -w1 10.100.1.254
connect: No route to host
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the reset_resume() is called, the flag of SELECTIVE_SUSPEND should be
cleared and reinitialize the device, whether the SELECTIVE_SUSPEND is set
or not. If reset_resume() is called, it means the power supply is cut or the
device is reset. That is, the device wouldn't be in runtime suspend state and
the reinitialization is necessary.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry reports memleak with syskaller program.
Problem is that connector bumps skb usecount but might not invoke callback.
So move skb_get to where we invoke the callback.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since t4_alloc_mem can be failed in memory pressure,
if not properly handled, NULL dereference could be happened.
Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since qlcnic_alloc_mbx_args can be failed,
return value should be checked.
Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 807f16d4db ("mtd: core: set some defaults when dev.parent is
set") attempted to provide some default settings for MTDs that
(a) assign the parent device and
(b) don't provide their own name or owner
However, this isn't a perfect drop-in replacement for the boilerplate
found in some drivers, because the MTD name is used by partition
parsers like cmdlinepart, but the name isn't set until add_mtd_device(),
after the parsing is completed. This means cmdlinepart sees a NULL name
and therefore will not work properly.
Fix this by moving the default name and owner assignment to be first in
the MTD registration process.
[Note: this does not fix all reported issues, particularly with NAND
drivers. Will require an additional fix for drivers/mtd/nand/]
Fixes: 807f16d4db ("mtd: core: set some defaults when dev.parent is set")
Reported-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Frans Klaver <fransklaver@gmail.com>
Pull i915 drm fixes from Jani Nikula:
"Two display fixes still for v4.4.
The new year's resolution is to start using signed tags per Linus'
request. This one is still unsigned; I want to fix this up in our
maintainer scripts instead of doing it one-off"
* tag 'drm-intel-fixes-2016-01-02' of git://anongit.freedesktop.org/drm-intel:
drm/i915: increase the tries for HDMI hotplug live status checking
drm/i915: Unbreak check_digital_port_conflicts()
HiSilicon host bridge driver
Fix 32-bit config reads (Dongdong Liu)
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Merge tag 'pci-v4.4-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI bugfix from Bjorn Helgaas:
"Here's another fix for v4.4.
This fixes 32-bit config reads for the HiSilicon driver. Obviously
the driver is completely broken without this fix (apparently it
actually was tested internally, but got broken somehow in the process
of upstreaming it).
Summary:
HiSilicon host bridge driver
Fix 32-bit config reads (Dongdong Liu)"
* tag 'pci-v4.4-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: hisi: Fix hisi_pcie_cfg_read() 32-bit reads
Pull networking fixes from David Miller:
1) Prevent XFRM per-cpu counter updates for one namespace from being
applied to another namespace. Fix from DanS treetman.
2) Fix RCU de-reference in iwl_mvm_get_key_sta_id(), from Johannes
Berg.
3) Remove ethernet header assumption in nft_do_chain_netdev(), from
Pablo Neira Ayuso.
4) Fix cpsw PHY ident with multiple slaves and fixed-phy, from Pascal
Speck.
5) Fix use after free in sixpack_close and mkiss_close.
6) Fix VXLAN fw assertion on bnx2x, from Yuval Mintz.
7) natsemi doesn't check for DMA mapping errors, from Alexey
Khoroshilov.
8) Fix inverted test in ip6addrlbl_get(), from ANdrey Ryabinin.
9) Missing initialization of needed_headroom in geneve tunnel driver,
from Paolo Abeni.
10) Fix conntrack template leak in openvswitch, from Joe Stringer.
11) Mission initialization of wq->flags in sock_alloc_inode(), from
Nicolai Stange.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (35 commits)
sctp: sctp should release assoc when sctp_make_abort_user return NULL in sctp_close
net, socket, socket_wq: fix missing initialization of flags
drivers: net: cpsw: fix error return code
openvswitch: Fix template leak in error cases.
sctp: label accepted/peeled off sockets
sctp: use GFP_USER for user-controlled kmalloc
qlcnic: fix a loop exit condition better
net: cdc_ncm: avoid changing RX/TX buffers on MTU changes
geneve: initialize needed_headroom
ipv6: honor ifindex in case we receive ll addresses in router advertisements
addrconf: always initialize sysctl table data
ipv6/addrlabel: fix ip6addrlbl_get()
switchdev: bridge: Pass ageing time as clock_t instead of jiffies
sh_eth: fix 16-bit descriptor field access endianness too
veth: don’t modify ip_summed; doing so treats packets with bad checksums as good.
net: usb: cdc_ncm: Adding Dell DW5813 LTE AT&T Mobile Broadband Card
net: usb: cdc_ncm: Adding Dell DW5812 LTE Verizon Mobile Broadband Card
natsemi: add checks for dma mapping errors
rhashtable: Kill harmless RCU warning in rhashtable_walk_init
openvswitch: correct encoding of set tunnel action attributes
...
Pull block fixes from Jens Axboe:
"Make the block layer great again.
Basically three amazing fixes in this pull request, split into 4
patches. Believe me, they should go into 4.4. Two of them fix a
regression, the third and last fixes an easy-to-trigger bug.
- Fix a bad irq enable through null_blk, for queue_mode=1 and using
timer completions. Add a block helper to restart a queue
asynchronously, and use that from null_blk. From me.
- Fix a performance issue in NVMe. Some devices (Intel Pxxxx) expose
a stripe boundary, and performance suffers if we cross it. We took
that into account for merging, but not for the newer splitting
code. Fix from Keith.
- Fix a kernel oops in lightnvm with multiple channels. From Matias"
* 'for-linus' of git://git.kernel.dk/linux-block:
lightnvm: wrong offset in bad blk lun calculation
null_blk: use async queue restart helper
block: add blk_start_queue_async()
block: Split bios on chunk boundaries
The total delay of HDMI hotplug detecting with 30ms is sometimes not
enoughtfor HDMI live status up with specific HDMI monitors in BSW platform.
After doing experiments for following monitors, it needs 80ms at least
for those worst cases.
Lenovo L246 1xwA (4 failed, necessary hot-plug delay: 58/40/60/40ms)
Philips HH2AP (9 failed, necessary hot-plug delay: 80/50/50/60/46/40/58/58/39ms)
BENQ ET-0035-N (6 failed, necessary hot-plug delay: 60/50/50/80/80/40ms)
DELL U2713HM (2 failed, necessary hot-plug delay: 58/59ms)
HP HP-LP2475w (5 failed, necessary hot-plug delay: 70/50/40/60/40ms)
It looks like 70-80 ms is BSW platform needs in some bad cases of the
monitors at this end (8 times delay at most). Keep less than 100ms for
HDCP pulse HPD low (with at least 100ms) to respond a plug out.
Reviewed-by: Cooper Chiou <cooper.chiou@intel.com>
Tested-by: Gary Wang <gary.c.wang@intel.com>
Cc: Gavin Hindman <gavin.hindman@intel.com>
Cc: Sonika Jindal <sonika.jindal@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Gary Wang <gary.c.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450858295-12804-1-git-send-email-gary.c.wang@intel.com
Tested-by: Shobhit Kumar <shobhit.kumar@intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Fixes: 237ed86c69 ("drm/i915: Check live status before reading edid")
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit f8d03ea005)
[Jani: undo the file mode change of the original commit]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Propagate the return value of platform_get_irq on failure.
A simplified version of the semantic match that finds the two cases where
no error code is returned at all is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
dev->nr_luns reports the total number of luns available in a device
while dev->luns_per_chnl is the number of luns per channel.
When multiple channels are available, the offset is calculated from a
channel and lun id into a linear array. As it multiplies with
the total number of luns, we go out of bound when channel id > 0 and
causes the kernel to panic when we read a protected kernel memory area.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
- A previous patch updated the mlx4 driver to use vmalloc when there was
not enough memory to get a contiguous region large enough for our needs,
so we need kvfree() whenever we free that item. We missed one place,
so fix that now.
- A previous patch added code to match incoming packets against a specific
device, but failed to compensate for devices that have both InfiniBand
and Ethernet ports. Fix that.
- Under certain vlan conditions, the ocrdma driver would fail to bring up
any vlan interfaces and would print out a circular locking failure. Fix
that.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Three late 4.4-rc fixes.
The first two were very small in terms of number of lines, the third
is more lines of change than I like this late in the cycle, but there
are positive test results from Avagotech and from my own test setup
with the target hardware, and given the problem was a 100% failure
case, I sent it through.
- A previous patch updated the mlx4 driver to use vmalloc when there
was not enough memory to get a contiguous region large enough for
our needs, so we need kvfree() whenever we free that item. We
missed one place, so fix that now.
- A previous patch added code to match incoming packets against a
specific device, but failed to compensate for devices that have
both InfiniBand and Ethernet ports. Fix that.
- Under certain vlan conditions, the ocrdma driver would fail to
bring up any vlan interfaces and would print out a circular locking
failure. Fix that"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
RDMA/be2net: Remove open and close entry points
RDMA/ocrdma: Depend on async link events from CNA
RDMA/ocrdma: Dispatch only port event when port state changes
RDMA/ocrdma: Fix vlan-id assignment in qp parameters
IB/mlx4: Replace kfree with kvfree in mlx4_ib_destroy_srq
IB/cma: cma_match_net_dev needs to take into account port_num
If null_blk is run in NULL_IRQ_TIMER mode and with queue_mode NULL_Q_RQ,
we need to restart the queue from the hrtimer interrupt. We can't
directly invoke the request_fn from that context, so punt the queue run
to async kblockd context.
Tested-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Jens Axboe <axboe@fb.com>
Recently Dough Ledford reported a deadlock happening
between ocrdma-load sequence and NetworkManager service
issueing "open" on be2net interface.
The deadlock happens when any be2net hook (e.g. open/close) is called
in parallel to insmod ocrdma.ko.
A. be2net is sending administrative open/close event to ocrdma holding
device_list_mutex. It does this from ndo_open/ndo_stop hooks of be2net.
So sequence of locks is rtnl_lock---> device_list lock
B. When new ocrdma roce device gets registered, infiniband stack now
takes rtnl_lock in ib_register_device() in GID initialization routines.
So sequence of locks in this path is device_list lock ---> rtnl_lock.
This improper locking sequence causes deadlock.
In order to resolve the above deadlock condition, ocrdma intorduced a
patch to stop listening to administrative open/close events generated from
be2net driver. It now depends on link-state-change async-event generated from
CNA. This change leaves behind dead code which used to generate administrative
open/close events. This patch cleans-up all that dead code from be2net.
Reported-by: Doug Ledford <dledford@redhat.com>
CC: Sathya Perla <sathya.perla@avagotech.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Recently Dough Ledford reported a deadlock happening
between ocrdma-load sequence and NetworkManager service
issuing "open" on be2net interface.
The deadlock happens when any be2net hook (e.g. open/close) is called
in parallel to insmod ocrdma.ko.
A. be2net is sending administrative open/close event to ocrdma holding
device_list_mutex. It does this from ndo_open/ndo_stop hooks of be2net.
So sequence of locks is rtnl_lock---> device_list lock
B. When new ocrdma roce device gets registered, infiniband stack now
takes rtnl_lock in ib_register_device() in GID initialization routines.
So sequence of locks in this path is device_list lock ---> rtnl_lock.
This improper locking sequence causes deadlock.
With this patch we stop using administrative open and close events
injected by be2net driver. These events were used to dispatch PORT_ACTIVE
and PORT_ERROR events to the IB-stack. This patch implements a logic
to receive async-link-events generated from CNA whenever link-state-change
is detected. Now on, these async-events will be used to dispatch
PORT_ACTIVE and PORT_ERROR events to IB-stack.
Depending on async-events from CNA removes the need to hold device-list-mutex
and thus breaks the busy-wait scenario.
Reported-by: Doug Ledford <dledford@redhat.com>
CC: Sathya Perla <sathya.perla@avagotech.com>
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@avagotech.com>
Signed-off-by: Selvin Xavier <selvin.xavier@avagotech.com>
Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Dispatch only port event to IB stack when port state changes.
Don't explicitly modify qps to error. Let application listen to
port events on async event queue or let QP fail with retry-exceeded
completion error.
Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@avagotech.com>
Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
vlan-id is wrongly getting as 0 when PFC is enabled.
Set vlan-id configured by user in QP parameters.
In case vlan interface is not used, flash a warning to
user to configure vlan and assign vlan-id as 0 in qp params.
Fixes: dbf727de74 ('IB/core: Use GID table in AH creation and dmac resolution')
Cc: Matan Barak <matanb@mellanox.com>
Signed-off-by: Devesh Sharma <devesh.sharma@avagotech.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
If CONFIG_PHYS_ADDR_T_64BIT=n:
drivers/iommu/ipmmu-vmsa.c: In function 'ipmmu_domain_init_context':
drivers/iommu/ipmmu-vmsa.c:434:2: warning: right shift count >= width of type
ipmmu_ctx_write(domain, IMTTUBR0, ttbr >> 32);
^
As io_pgtable_cfg.arm_lpae_s1_cfg.ttbr[] is an array of u64s, assigning
it to a phys_addr_t may truncates it. Make ttbr u64 to fix this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Doug reports that the equivalent page allocator on 32-bit ARM exhibits
particularly pathalogical behaviour under memory pressure when
fragmentation is high, where allocating a 4MB buffer takes tens of
seconds and the number of calls to alloc_pages() is over 9000![1]
We can drastically improve that situation without losing the other
benefits of high-order allocations when they would succeed, by assuming
memory pressure is relatively constant over the course of an allocation,
and not retrying allocations at orders we know to have failed before.
This way, the best-case behaviour remains unchanged, and in the worst
case we should see at most a dozen or so (MAX_ORDER - 1) failed attempts
before falling back to single pages for the remainder of the buffer.
[1]:http://lists.infradead.org/pipermail/linux-arm-kernel/2015-December/394660.html
Reported-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
dma-iommu.c was naughtily relying on an implicit transitive #include of
linux/vmalloc.h, which is apparently not present on some architectures.
Add that, plus a couple more headers for other functions which are used
similarly.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
A handful of fixes for OMAP, i.MX, Allwinner and Tegra:
- A clock rate and a PHY setup fix for i.MX6Q/DL
- A couple of fixes for the reduced serial bus (sunxi-rsb) on Allwinner
- UART wakeirq fix for an OMAP4 board, timer config fixes for AM43XX.
- Suspend fix for Tegra124 Chromebooks
- Fix for missing implicit include that's different between ARM/ARM64
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A smallish set of fixes that we've been sitting on for a while now,
flushing the queue here so they go in. Summary:
A handful of fixes for OMAP, i.MX, Allwinner and Tegra:
- A clock rate and a PHY setup fix for i.MX6Q/DL
- A couple of fixes for the reduced serial bus (sunxi-rsb) on
Allwinner
- UART wakeirq fix for an OMAP4 board, timer config fixes for AM43XX.
- Suspend fix for Tegra124 Chromebooks
- Fix for missing implicit include that's different between
ARM/ARM64"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: tegra: Fix suspend hang on Tegra124 Chromebooks
bus: sunxi-rsb: Fix peripheral IC mapping runtime address
bus: sunxi-rsb: Fix primary PMIC mapping hardware address
ARM: dts: Fix UART wakeirq for omap4 duovero parlor
ARM: OMAP2+: AM43xx: select ARM TWD timer
ARM: OMAP2+: am43xx: enable GENERIC_CLOCKEVENTS_BROADCAST
fsl-ifc: add missing include on ARM64
ARM: dts: imx6: Fix Ethernet PHY mode on Ventana boards
ARM: dts: imx: Fix the assigned-clock mismatch issue on imx6q/dl
bus: sunxi-rsb: unlock on error in sunxi_rsb_read()
ARM: dts: sunxi: sun6i-a31s-primo81.dts: add touchscreen axis swapping property
- Fix a thermal management issue introduced by an ACPI processor
driver change made during the 4.3 development cycle that failed
to return 0 from a function on success which triggered an error
cleanup path every time it had been called that deleted useful
data structures created previously (Srinivas Pandruvada).
- Fix a variable data type issue in the arm_big_little cpufreq
driver's SCPI support code added recently that prevents error
handling in there from working correctly (Dan Carpenter).
/
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Merge tag 'pm+acpi-4.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"These fix an ACPI processor driver regression introduced during the
4.3 cycle and a mistake in the recently added SCPI support in the
arm_big_little cpufreq driver.
Specifics:
- Fix a thermal management issue introduced by an ACPI processor
driver change made during the 4.3 development cycle that failed to
return 0 from a function on success which triggered an error
cleanup path every time it had been called that deleted useful data
structures created previously (Srinivas Pandruvada).
- Fix a variable data type issue in the arm_big_little cpufreq
driver's SCPI support code added recently that prevents error
handling in there from working correctly (Dan Carpenter)"
* tag 'pm+acpi-4.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: scpi-cpufreq: signedness bug in scpi_get_dvfs_info()
ACPI / processor: Fix thermal cooling device regression
Fix a regression which causes reshape to not start properly
sometimes.
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Merge tag 'md/4.4-rc6-fix' of git://neil.brown.name/md
Pull md bugfix from Neil Brown:
"One more md fix for 4.4-rc
Fix a regression which causes reshape to not start properly sometimes"
* tag 'md/4.4-rc6-fix' of git://neil.brown.name/md:
md: remove check for MD_RECOVERY_NEEDED in action_store.
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Merge tag 'upstream-4.4-rc7' of git://git.infradead.org/linux-ubifs
Pull UBI bug fixes from Richard Weinberger:
"This contains four bug fixes for UBI"
* tag 'upstream-4.4-rc7' of git://git.infradead.org/linux-ubifs:
mtd: ubi: don't leak e if schedule_erase() fails
mtd: ubi: fixup error correction in do_sync_erase()
UBI: fix use of "VID" vs. "EC" in header self-check
UBI: fix return error code
