There is a missing curly brace here so we might print some extra debug
information.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
It need to free dev_entry when it failed to assign to a new
slot on the virtual PCI bus.
smatch says:
drivers/xen/xen-pciback/vpci.c:142 __xen_pcibk_add_pci_dev() warn:
possible memory leak of 'dev_entry'
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
We are flagging the parent IRQ as chained, then we must also
make sure to call the chained_irq_[enter|exit] functions for
things to work smoothly.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: http://lkml.kernel.org/r/1397550484-7119-1-git-send-email-linus.walleij@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Commit 198d208df4 ("x86: Keep
thread_info on thread stack in x86_32") made 32-bit kernels use
kernel_stack to point to thread_info. That change missed a couple of
updates needed by Xen's 32-bit PV guests:
1. kernel_stack needs to be initialized for secondary CPUs
2. GET_THREAD_INFO() now uses %fs register which may not be the
kernel's version when executing xen_iret().
With respect to the second issue, we don't need GET_THREAD_INFO()
anymore: we used it as an intermediate step to get to per_cpu xen_vcpu
and avoid referencing %fs. Now that we are going to use %fs anyway we
may as well go directly to xen_vcpu.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
With the recent primary-plane changes for drm, the primary plane's
framebuffer needs to be ref counted the same way as for
non-primary-planes. This was not done by the omapdrm driver, which
caused the ref count to drop to 0 too early, causing problems.
This patch moves the fb unref and ref from omap_plane_update to
omap_plane_mode_set. This way the fb refs are updated for both primary
and non-primary cases, as omap_plane_update calls omap_plane_mode_set.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
perf_evlist__delete() deletes attached cpu and thread maps
but the test is still using them, so remove them from the
evlist before deleting it.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Link: http://lkml.kernel.org/r/53465E3E.8070201@intel.com
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
kernel panic happened when iommu_unmap a buffer larger than 2MB,
more than expected pmd entries got “invalidated”, due to a wrong range
passed to arm_smmu_alloc_init_pte. it was likely a typo, now we fix
it, passing the correct "end" address to arm_smmu_alloc_init_pte.
Signed-off-by: Bin Wang <binw@marvell.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The IOMMU core expects the unmap operation to return the number of bytes
that have been unmapped or 0 on failure, a negative return value being
treated like a number of bytes.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The vblank_cb callback and the page_flip ioctl can occur together in different
CPU contexts. vblank_cb uses takes tje drm device's event_lock spinlock when
sending the vblank event and updating omap_crtc->event and omap_crtc->od_fb.
Use the same spinlock in page_flip, to make sure the above omap_crtc parameters
are configured sequentially.
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
omap_crtc->old_fb is used to check whether the previous page flip has completed
or not. However, it's never initialized to anything, so it's always NULL. This
results in the check to always succeed, and the page_flip to proceed.
Initialize old_fb to the fb that we intend to flip to through page_flip, and
therefore prevent a future page flip to proceed if the last one didn't
complete.
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The channel_names list didn't have a string populated for LCD3 manager, this
results in a crash when the display's output is connected to LCD3. Add an entry
for LCD3.
Reported-by: Somnath Mukherjee <somnath@ti.com>
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
A waiter of the type OMAP_GEM_READ should wait for a buffer to be completely
written, and only then proceed with reading it. A similar logic applies for
waiters with OMAP_GEM_WRITE flag.
Currently the function is_waiting() waits on the read_complete/read_target
counts in the sync object.
This should be the other way round, as a reader should wait for users who are
'writing' to this buffer, and vice versa.
Make readers of the buffer(OMAP_GEM_READ) wait on the write counters, and
writers to the buffer(OMAP_GEM_WRITE) wait on the read counters in is_waiting()
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
In omap_gem_op_async(), if a waiter is not added to the wait list, it needs to
be free'd in the function itself.
Make sure we free the waiter for this case.
Signed-off-by: Subhajit Paul <subhajit_paul@ti.com>
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Patch dfe96ddcfa (omapdrm: simplify locking in
the fb debugfs file) removed taking locks when using omapdrm's debugfs
to dump fb objects.
However, in omap_gem_describe we give a WARN is the lock has not been
taken, so that WARN is now seen every time omapdrm debugfs is used.
So, presuming the removal of locks is ok, we can also remove the WARN.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
All the planes, including primary planes, are now destroyed by the drm
framework. Thus we no longer need the explicit call to plane->destroy
from the crtc's destroy function.
This patch removes the call, thus fixing the crash caused by double
freeing the plane.
remove omap_crtc->plane->funcs->destroy(omap_crtc->plane)
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Print a warning when the user tries to rotate a non-TILER framebuffer.
Also set the rotation to 0, to avoid constant flood of the warnings in
case of page flipping.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
A fl->fl_break_time of 0 has a special meaning to the lease break code
that basically means "never break the lease". knfsd uses this to ensure
that leases don't disappear out from under it.
Unfortunately, the code in __break_lease can end up passing this value
to wait_event_interruptible as a timeout, which prevents it from going
to sleep at all. This makes __break_lease to spin in a tight loop and
causes soft lockups.
Fix this by ensuring that we pass a minimum value of 1 as a timeout
instead.
Cc: <stable@vger.kernel.org>
Cc: J. Bruce Fields <bfields@fieldses.org>
Reported-by: Terry Barnaby <terry1@beam.ltd.uk>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Fix build error by including linux/gpio.h. Also drop asm/gpio.h which is
not needed.
Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The error emitted when mapping the pmu failed, wrongly mentions the sram.
Reported-by: Kent Borg <kentborg@borg.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The default behaviour of the uart-rx pins on the rk3188 is to be pulled up and
a lot of designs use diodes to even prevent them from being raised from the
outside.
Therefore change the rx-pin settings accordingly.
This also fixes a uart receive problem on mass production Radxa Rock boards.
Signed-off-by: Max Schwarz <max.schwarz@online.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Commit "59ce0515cd iommu/vt-d: Update DRHD/RMRR/ATSR device scope
caches when PCI hotplug happens" introduces a bug, which fails to
match PCI devices with DMAR device scope entries if PCI path array
in the entry has more than one level.
For example, it fails to handle
[1D2h 0466 1] Device Scope Entry Type : 01
[1D3h 0467 1] Entry Length : 0A
[1D4h 0468 2] Reserved : 0000
[1D6h 0470 1] Enumeration ID : 00
[1D7h 0471 1] PCI Bus Number : 00
[1D8h 0472 2] PCI Path : 1C,04
[1DAh 0474 2] PCI Path : 00,02
And cause DMA failure on HP DL980 as:
DMAR:[fault reason 02] Present bit in context entry is clear
dmar: DRHD: handling fault status reg 602
dmar: DMAR:[DMA Read] Request device [02:00.2] fault addr 7f61e000
Reported-and-tested-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Commit 146922ec79 ("iommu/vt-d: Make get_domain_for_dev() take struct
device") introduced new variables bridge_bus and bridge_devfn to
identify the upstream PCIe to PCI bridge responsible for the given
target device. Leaving the original bus/devfn variables to identify
the target device itself, now that it is no longer assumed to be PCI
and we can no longer trivially find that information.
However, the patch failed to correctly use the new variables in all
cases; instead using the as-yet-uninitialised 'bus' and 'devfn'
variables.
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
In cosa driver, udelay with more than 20000 may cause __bad_udelay.
Use msleep for instead.
Signed-off-by: Li, Zhen-Hua <zhen-hual@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The __at86rf230_read_subreg function don't mask and shift register
contents which it should do. This patch adds the necessary masks and
shift operations in this function.
Since we have csma support this can make some trouble on state changes.
Since CSMA support turned on some bits in the TRX_STATUS register that
used to be zero, not masking broke checking of the TRX_STATUS field
after commanding a state change.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Werner Almesberger <werner@almesberger.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
The AVDD regulator is only enabled when the RF section is active TX_ON
(PLL_ON) state. Since commit 7dcbd22a97
("ieee802154: ensure that first RF212 state comes from TRX_OFF").
We are in TRX_OFF state at the time at86rf230_hw_init is run.
Note that this test would only fail in case of a severe hardware
malfunction (faulty/shorted power supply, etc.) so it wasn't all that
useful in the first place.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Werner Almesberger <werner@almesberger.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
The Cadence ethernet chipsets are only used on specific ARM
architectures. Add Kconfig dependencies so that drivers for these
chipsets are only buildable on the relevant architectures.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In retrospect, this was a bad way to handle things, since it limited
testing of these patches. We should just get the VFS level changes
merged in first.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
To obtain exact pixel clocks, allow the DI clock selectors to influence
the PLLs that they are derived from.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Route the video PLL to the display interface clocks via the di_pre_sel
and di_sel muxes by default.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Pull KVM fixes from Marcelo Tosatti:
- Fix for guest triggerable BUG_ON (CVE-2014-0155)
- CR4.SMAP support
- Spurious WARN_ON() fix
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: remove WARN_ON from get_kernel_ns()
KVM: Rename variable smep to cr4_smep
KVM: expose SMAP feature to guest
KVM: Disable SMAP for guests in EPT realmode and EPT unpaging mode
KVM: Add SMAP support when setting CR4
KVM: Remove SMAP bit from CR4_RESERVED_BITS
KVM: ioapic: try to recover if pending_eoi goes out of range
KVM: ioapic: fix assignment of ioapic->rtc_status.pending_eoi (CVE-2014-0155)
Pull bmc2835 crypto fix from Herbert Xu:
"This fixes a potential boot crash on bcm2835 due to the recent change
that now causes hardware RNGs to be accessed on registration"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
hwrng: bcm2835 - fix oops when rng h/w is accessed during registration
smp_read_barrier_depends() can be used if there is data dependency between
the readers - i.e. if the read operation after the barrier uses address
that was obtained from the read operation before the barrier.
In this file, there is only control dependency, no data dependecy, so the
use of smp_read_barrier_depends() is incorrect. The code could fail in the
following way:
* the cpu predicts that idx < entries is true and starts executing the
body of the for loop
* the cpu fetches map->extent[0].first and map->extent[0].count
* the cpu fetches map->nr_extents
* the cpu verifies that idx < extents is true, so it commits the
instructions in the body of the for loop
The problem is that in this scenario, the cpu read map->extent[0].first
and map->nr_extents in the wrong order. We need a full read memory barrier
to prevent it.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains three Netfilter fixes for your net tree,
they are:
* Fix missing generation sequence initialization which results in a splat
if lockdep is enabled, it was introduced in the recent works to improve
nf_conntrack scalability, from Andrey Vagin.
* Don't flush the GRE keymap list in nf_conntrack when the pptp helper is
disabled otherwise this crashes due to a double release, from Andrey
Vagin.
* Fix nf_tables cmp fast in big endian, from Patrick McHardy.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sometimes, when the packet arrives at skb_mac_gso_segment()
its skb->mac_len already accounts for some of the mac lenght
headers in the packet. This seems to happen when forwarding
through and OpenSSL tunnel.
When we start looking for any vlan headers in skb_network_protocol()
we seem to ignore any of the already known mac headers and start
with an ETH_HLEN. This results in an incorrect offset, dropped
TSO frames and general slowness of the connection.
We can start counting from the known skb->mac_len
and return at least that much if all mac level headers
are known and accounted for.
Fixes: 53d6471cef (net: Account for all vlan headers in skb_mac_gso_segment)
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Daniel Borkman <dborkman@redhat.com>
Tested-by: Martin Filip <nexus+kernel@smoula.net>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix typo of renesas,groups in the koeslch dt. The kernel has no
renesas,gpios but this should match renesas,groups.
Noticed thanks to similar fix for Lager by Rob Taylor and Ben Dooks.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This is likely a copy-and-paste error from the
ARM GIC documentation, that has already been fixed.
address-cells should have been set to 0, as with the size
cells. As having those properties set to 0 is the
same thing as not specifying them, drop them completely.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This is likely a copy-and-paste error from the
ARM GIC documentation, that has already been fixed.
address-cells should have been set to 0, as with the size
cells. As having those properties set to 0 is the
same thing as not specifying them, drop them completely.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
3bc955987f ("powerpc/PCI: Use list_for_each_entry() for bus traversal")
caused a NULL pointer dereference because the loop body set the iterator to
NULL:
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc000000000041d78
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP [c000000000041d78] .sys_pciconfig_iobase+0x68/0x1f0
LR [c000000000041e0c] .sys_pciconfig_iobase+0xfc/0x1f0
Call Trace:
[c0000003b4787db0] [c000000000041e0c] .sys_pciconfig_iobase+0xfc/0x1f0 (unreliable)
[c0000003b4787e30] [c000000000009ed8] syscall_exit+0x0/0x98
Fix it by using a temporary variable for the iterator.
[bhelgaas: changelog, drop tmp_bus initialization]
Fixes: 3bc955987f powerpc/PCI: Use list_for_each_entry() for bus traversal
Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The emulation for single and double precision multiply accumulate
instructions correctly normalised any denormal values in the operand
registers, but failed to normalise the destination (accumulator)
register.
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=70501
Signed-off-by: Jay Foad <jay.foad@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch sorts the entries for DEBUG_UART_{PHYS,VIRT}.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch converts this driver to use the regmap helper functions provided by
regulator core.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
The is_enabled implementation is wrong in some cases:
e.g. for pbias_mmc_omap5: enable_mask is : BIT(27) | BIT(25) | BIT(26)
However, pbias_regulator_enable() only sets BIT(27) | BIT(26) bits.
So is_enabled callback will always return false in this case.
Fix the logic to compare the register value with info->enable rather than
info->enable_mask.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Rename variable smep to cr4_smep, which can better reflect the
meaning of the variable.
Signed-off-by: Feng Wu <feng.wu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
SMAP is disabled if CPU is in non-paging mode in hardware.
However KVM always uses paging mode to emulate guest non-paging
mode with TDP. To emulate this behavior, SMAP needs to be
manually disabled when guest switches to non-paging mode.
Signed-off-by: Feng Wu <feng.wu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This patch adds SMAP handling logic when setting CR4 for guests
Thanks a lot to Paolo Bonzini for his suggestion to use the branchless
way to detect SMAP violation.
Signed-off-by: Feng Wu <feng.wu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
