Commit Graph

601941 Commits

Author SHA1 Message Date
Tomi Valkeinen 84e5a79522 drm/sti: remove extra mode fixup
Commit 652353e6e5 ("drm/sti: set CRTC
modesetting parameters") added a hack to avoid warnings related to
setting mode with atomic API. With the previous patch, the hack should
no longer be necessary.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-06-01 14:59:44 +10:00
Tomi Valkeinen b201e743f4 drm: add missing drm_mode_set_crtcinfo call
When setting mode via MODE_ID property,
drm_atomic_set_mode_prop_for_crtc() does not call
drm_mode_set_crtcinfo() which possibly causes:

"[drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 32: Can't
calculate constants, dotclock = 0!"

Whether the error is seen depends on the previous data in state->mode,
as state->mode is not cleared when setting new mode.

This patch adds drm_mode_set_crtcinfo() call to
drm_mode_convert_umode(), which is called in both legacy and atomic
paths. This should be fine as there's no reason to call
drm_mode_convert_umode() without also setting the crtc related fields.

drm_mode_set_crtcinfo() is removed from the legacy drm_mode_setcrtc() as
that is no longer needed.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-06-01 14:59:39 +10:00
Thomas Huth 7cc851039d powerpc/pseries: Add POWER8NVL support to ibm,client-architecture-support call
If we do not provide the PVR for POWER8NVL, a guest on this system
currently ends up in PowerISA 2.06 compatibility mode on KVM, since QEMU
does not provide a generic PowerISA 2.07 mode yet. So some new
instructions from POWER8 (like "mtvsrd") get disabled for the guest,
resulting in crashes when using code compiled explicitly for
POWER8 (e.g. with the "-mcpu=power8" option of GCC).

Fixes: ddee09c099 ("powerpc: Add PVR for POWER8NVL processor")
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-01 13:47:34 +10:00
Aneesh Kumar K.V 157d4d0620 powerpc/mm/radix: Add missing tlb flush
This should not have any impact on hash, because hash does tlb
invalidate with every pte update and we don't implement
flush_tlb_* functions for hash. With radix we should make an explicit
call to flush tlb outside pte update.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-01 13:47:34 +10:00
Aneesh Kumar K.V dc47c0c1f8 powerpc/mm/hash: Fix the reference bit update when handling hash fault
When we converted the asm routines to C functions, we missed updating
HPTE_R_R based on _PAGE_ACCESSED. ASM code used to copy over the lower
bits from pte via.

andi.	r3,r30,0x1fe		/* Get basic set of flags */

We also update the code such that we won't update the Change bit ('C'
bit) always. This was added by commit c5cf0e30bf ("powerpc: Fix
buglet with MMU hash management").

With hash64, we need to make sure that hardware doesn't do a pte update
directly. This is because we do end up with entries in TLB with no hash
page table entry. This happens because when we find a hash bucket full,
we "evict" a more/less random entry from it. When we do that we don't
invalidate the TLB (hpte_remove) because we assume the old translation
is still technically "valid". For more info look at commit
0608d692463("powerpc/mm: Always invalidate tlb on hpte invalidate and
update").

Thus it's critical that valid hash PTEs always have reference bit set
and writeable ones have change bit set. We do this by hashing a
non-dirty linux PTE as read-only and always setting _PAGE_ACCESSED (and
thus R) when hashing anything else in. Any attempt by Linux at clearing
those bits also removes the corresponding hash entry.

Commit 5cf0e30bf3d8 did that for 'C' bit by enabling 'C' bit always.
We don't really need to do that because we never map a RW pte entry
without setting 'C' bit. On READ fault on a RW pte entry, we still map
it READ only, hence a store update in the page will still cause a hash
pte fault.

This patch reverts the part of commit c5cf0e30bf ("[PATCH] powerpc:
Fix buglet with MMU hash management") and retain the updatepp part.

- If we hit the updatepp path on native, the old code without that
  commit, would fail to set C bcause native_hpte_updatepp()
  was implemented to filter the same bits as H_PROTECT and not let C
  through thus we would "upgrade" a RO HPTE to RW without setting C
  thus causing the bug. So the real fix in that commit was the change
  to native_hpte_updatepp

Fixes: 89ff725051 ("powerpc/mm: Convert __hash_page_64K to C")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-01 13:47:34 +10:00
Aneesh Kumar K.V d6c886006c powerpc/mm/radix: Update LPCR only if it is powernv
LPCR cannot be updated when running in guest mode.

Fixes: 2bfd65e45e ("powerpc/mm/radix: Add radix callbacks for early init routines")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-01 13:47:34 +10:00
Jon Cooper faf8dcc12c sfc: Track RPS flow IDs per channel instead of per function
Otherwise we get confused when two flows on different channels get the
 same flow ID.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 20:30:25 -07:00
Alex Williamson ce7585f3c4 vfio/pci: Allow VPD short read
The size of the VPD area is not necessarily 4-byte aligned, so a
pci_vpd_read() might return less than 4 bytes.  Zero our buffer and
accept anything other than an error.  Intel X710 NICs exercise this.

Fixes: 4e1a635552 ("vfio/pci: Use kernel VPD access functions")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2016-05-31 21:25:52 -06:00
Christoph Fritz d69d169493 usbnet: smsc95xx: fix link detection for disabled autonegotiation
To detect link status up/down for connections where autonegotiation is
explicitly disabled, we don't get an irq but need to poll the status
register for link up/down detection.
This patch adds a workqueue to poll for link status.

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 14:22:23 -07:00
wangyunjian f00e35e259 virtio_net: fix virtnet_open and virtnet_probe competing for try_fill_recv
In function virtnet_open() and virtnet_probe(), func try_fill_recv() may
be executed at the same time. VQ in virtqueue_add() has not been protected
well and BUG_ON will be triggered when virito_net.ko being removed.

Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 14:21:09 -07:00
Vitaly Kuznetsov bae5499cc5 bnx2x: avoid leaking memory on bnx2x_init_one() failures
bnx2x_init_bp() allocates memory with bnx2x_alloc_mem_bp() so if we
fail later in bnx2x_init_one() we need to free this memory
with bnx2x_free_mem_bp() to avoid leakages. E.g. I'm observing memory
leaks reported by kmemleak when a failure (unrelated) happens in
bnx2x_vfpf_acquire().

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 14:10:34 -07:00
Arnd Bergmann 95e4daa820 fou: fix IPv6 Kconfig options
The Kconfig options I added to work around broken compilation ended
up screwing up things more, as I used the wrong symbol to control
compilation of the file, resulting in IPv6 fou support to never be built
into the kernel.

Changing CONFIG_NET_FOU_IPV6_TUNNELS to CONFIG_IPV6_FOU fixes that
problem, I had renamed the symbol in one location but not the other,
and as the file is never being used by other kernel code, this did not
lead to a build failure that I would have caught.

After that fix, another issue with the same patch becomes obvious, as we
'select INET6_TUNNEL', which is related to IPV6_TUNNEL, but not the same,
and this can still cause the original build failure when IPV6_TUNNEL is
not built-in but IPV6_FOU is. The fix is equally trivial, we just need
to select the right symbol.

I have successfully build 350 randconfig kernels with this patch
and verified that the driver is now being built.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Valentin Rothberg <valentinrothberg@gmail.com>
Fixes: fabb13db44 ("fou: add Kconfig options for IPv6 support")
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 14:07:49 -07:00
Simon Horman bc7cc5999f openvswitch: update checksum in {push,pop}_mpls
In the case of CHECKSUM_COMPLETE the skb checksum should be updated in
{push,pop}_mpls() as they the type in the ethernet header.

As suggested by Pravin Shelar.

Cc: Pravin Shelar <pshelar@nicira.com>
Fixes: 25cd9ba0ab ("openvswitch: Add basic MPLS support to kernel")
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 13:51:42 -07:00
Xin Long 40eb90e9cc sctp: sctp_diag should dump sctp socket type
Now we cannot distinguish that one sk is a udp or sctp style when
we use ss to dump sctp_info. it's necessary to dump it as well.

For sctp_diag, ss support is not officially available, thus there
are no official users of this yet, so we can add this field in the
middle of sctp_info without breaking user API.

v1->v2:
  - move 'sctpi_s_type' field to the end of struct sctp_info, so
    that it won't cause incompatibility with applications already
    built.
  - add __reserved3 in sctp_info to make sure sctp_info is 8-byte
    alignment.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:59:06 -07:00
Troy Kisky 7fafe80374 net: fec: update dirty_tx even if no skb
If dirty_tx isn't updated, then dma_unmap_single
can be called twice.

This fixes a
[   58.420980] ------------[ cut here ]------------
[   58.425667] WARNING: CPU: 0 PID: 377 at /home/schurig/d/mkarm/linux-4.5/lib/dma-debug.c:1096 check_unmap+0x9d0/0xab8()
[   58.436405] fec 2188000.ethernet: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x0000000000000000] [size=66 bytes]

encountered by Holger

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Tested-by: <holgerschurig@gmail.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:57:42 -07:00
Mike Manning 308453aa91 vlan: Propagate MAC address to VLANs
The MAC address of the physical interface is only copied to the VLAN
when it is first created, resulting in an inconsistency after MAC
address changes of only newly created VLANs having an up-to-date MAC.

The VLANs should continue inheriting the MAC address of the physical
interface until the VLAN MAC address is explicitly set to any value.
This allows IPv6 EUI64 addresses for the VLAN to reflect any changes
to the MAC of the physical interface and thus for DAD to behave as
expected.

Signed-off-by: Mike Manning <mmanning@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:56:48 -07:00
Dan Carpenter f2633d2eaa atm: iphase: off by one in rx_pkt()
The iadev->rx_open[] array holds "iadev->num_vc" pointers (this code
assumes that pointers are 32 bits).  So the > here should be >= or else
we could end up reading a garbage pointer from one element beyond the
end of the array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:52:59 -07:00
Dan Carpenter 86f04396ff atm: firestream: add more reserved strings
This bug was there when the driver was first added in back in year 2000.
It causes a Smatch warning:

    drivers/atm/firestream.c:849 process_incoming()
    error: buffer overflow 'res_strings' 60 <= 63

There are supposed to be 64 entries in this array and the missing
strings are clearly in the 30 40 range.  I added them as reserved 37 to
reserved 40.  It's possible that strings are really supposed to be added
in the middle instead of at the end, but this approach is safe, in that
it fixes the bug and doesn't break anything that wasn't already broken.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:52:59 -07:00
Chen Haiquan ce577668a4 vxlan: Accept user specified MTU value when create new vxlan link
When create a new vxlan link, example:
  ip link add vtap mtu 1440 type vxlan vni 1 dev eth0

The argument "mtu" has no effect, because it is not set to conf->mtu. The
default value is used in vxlan_dev_configure function.

This problem was introduced by commit 0dfbdf4102 (vxlan: Factor out device
configuration).

Fixes: 0dfbdf4102 (vxlan: Factor out device configuration)
Signed-off-by:  Chen Haiquan <oc@yunify.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:46:00 -07:00
Guenter Roeck bcf91bdb44 net: pktgen: Call destroy_hrtimer_on_stack()
If CONFIG_DEBUG_OBJECTS_TIMERS=y, hrtimer_init_on_stack() requires
a matching call to destroy_hrtimer_on_stack() to clean up timer
debug objects.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:44:08 -07:00
Guenter Roeck c08376ac97 timer: Export destroy_hrtimer_on_stack()
hrtimer_init_on_stack() needs a matching call to
destroy_hrtimer_on_stack(), so both need to be exported.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-31 11:44:08 -07:00
Catalin Marinas e47b020a32 arm64: Provide "model name" in /proc/cpuinfo for PER_LINUX32 tasks
This patch brings the PER_LINUX32 /proc/cpuinfo format more in line with
the 32-bit ARM one by providing an additional line:

model name      : ARMv8 Processor rev X (v8l)

Cc: <stable@vger.kernel.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-05-31 17:50:30 +01:00
Muhammad Falak R Wani b02da6f823 dma-buf: use vma_pages()
Replace explicit computation of vma page count by a call to
vma_pages().
Also, include <linux/mm.h>

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
2016-05-31 22:17:05 +05:30
Luis de Bethencourt 4320c2a22d fence: add missing descriptions for fence
The members child_list and active_list were added to the fence struct
without descriptions for the Documentation. Adding these.

Fixes: b55b54b5db ("staging/android: remove struct sync_pt")
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
2016-05-31 22:17:05 +05:30
Rob Clark eae1760fc8 doc: update/fixup dma-buf related DocBook
Split out dma-buf related parts into their own section, add missing
files, and write a bit of overview about how it all fits together.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
2016-05-31 22:16:53 +05:30
Linus Torvalds 367d3fd505 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "Three bugs fixes and an update for the default configuration"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: fix info leak in do_sigsegv
  s390/config: update default configuration
  s390/bpf: fix recache skb->data/hlen for skb_vlan_push/pop
  s390/bpf: reduce maximum program size to 64 KB
2016-05-31 09:43:24 -07:00
Rob Clark dad6c3945f reservation: add headerdoc comments
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
2016-05-31 22:12:43 +05:30
Rob Clark e2082e3ab8 dma-buf: headerdoc fixes
Apparently nobody noticed that dma-buf.h wasn't actually pulled into
docbook build.  And as a result the headerdoc comments bitrot a bit.
Add missing params/fields.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
2016-05-31 22:12:43 +05:30
Linus Torvalds 5eca831742 A bunch of GPIO fixes for the v4.7 series:
- Drop the lock before reading out the GPIO direction
   setting in drivers supporting the .get_direction()
   callback: some of them may be slowpath.
 
 - Flush GPIO direction setting before locking a GPIO as an
   IRQ: some electronics or other poking around in the
   registers behind our back may have happened, so flush
   the direction status before trying to lock the line for
   use by IRQs.
 
 - Bail out silently when asked to perform operations on
   NULL GPIO descriptors. That is what all the get_*_optional()
   is about: we get optional GPIO handles, if they are not
   there, we get NULL.
 
 - Handle compatible ioctl() correctly: we need to convert
   the ioctl() pointer using compat_ptr() here like everyone
   else.
 
 - Disable the broken .to_irq() on the LPC32xx platform.
   The whole irqchip infrastructure was replaced in the
   last merge window, and a new implementation will be
   needed.
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Merge tag 'gpio-v4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "A bunch of GPIO fixes for the v4.7 series:

   - Drop the lock before reading out the GPIO direction setting in
     drivers supporting the .get_direction() callback: some of them may
     be slowpath.

   - Flush GPIO direction setting before locking a GPIO as an IRQ: some
     electronics or other poking around in the registers behind our back
     may have happened, so flush the direction status before trying to
     lock the line for use by IRQs.

   - Bail out silently when asked to perform operations on NULL GPIO
     descriptors.  That is what all the get_*_optional() is about: we
     get optional GPIO handles, if they are not there, we get NULL.

   - Handle compatible ioctl() correctly: we need to convert the ioctl()
     pointer using compat_ptr() here like everyone else.

   - Disable the broken .to_irq() on the LPC32xx platform.  The whole
     irqchip infrastructure was replaced in the last merge window, and a
     new implementation will be needed"

* tag 'gpio-v4.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: drop lock before reading GPIO direction
  gpio: bail out silently on NULL descriptors
  gpio: handle compatible ioctl() pointers
  gpio: flush direction status in gpiochip_lock_as_irq()
  gpio: lpc32xx: disable broken to_irq support
2016-05-31 09:27:00 -07:00
Marc Zyngier c585132840 arm64: KVM: vgic-v3: Relax synchronization when SRE==1
The GICv3 backend of the vgic is quite barrier heavy, in order
to ensure synchronization of the system registers and the
memory mapped view for a potential GICv2 guest.

But when the guest is using a GICv3 model, there is absolutely
no need to execute all these heavy barriers, and it is actually
beneficial to avoid them altogether.

This patch makes the synchonization conditional, and ensures
that we do not change the EL1 SRE settings if we do not need to.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-05-31 16:12:17 +02:00
Marc Zyngier a057001e9e arm64: KVM: vgic-v3: Prevent the guest from messing with ICC_SRE_EL1
Both our GIC emulations are "strict", in the sense that we either
emulate a GICv2 or a GICv3, and not a GICv3 with GICv2 legacy
support.

But when running on a GICv3 host, we still allow the guest to
tinker with the ICC_SRE_EL1 register during its time slice:
it can switch SRE off, observe that it is off, and yet on the
next world switch, find the SRE bit to be set again. Not very
nice.

An obvious solution is to always trap accesses to ICC_SRE_EL1
(by clearing ICC_SRE_EL2.Enable), and to let the handler return
the programmed value on a read, or ignore the write.

That way, the guest can always observe that our GICv3 is SRE==1
only.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-05-31 16:12:17 +02:00
Marc Zyngier b34f2bcbf5 arm64: KVM: Make ICC_SRE_EL1 access return the configured SRE value
When we trap ICC_SRE_EL1, we handle it as RAZ/WI. It would be
more correct to actual make it RO, and return the configured
value when read.

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-05-31 16:12:16 +02:00
Marc Zyngier 637d122baa KVM: arm/arm64: vgic-v3: Always resample level interrupts
When reading back from the list registers, we need to perform
two actions for level interrupts:
1) clear the soft-pending bit if the interrupt is not pending
   anymore *in the list register*
2) resample the line level and propagate it to the pending state

But these two actions shouldn't be linked, and we should *always*
resample the line level, no matter what state is in the list
register. Otherwise, we may end-up injecting spurious interrupts
that have been already retired.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-05-31 16:12:16 +02:00
Marc Zyngier df7942d17e KVM: arm/arm64: vgic-v2: Always resample level interrupts
When reading back from the list registers, we need to perform
two actions for level interrupts:
1) clear the soft-pending bit if the interrupt is not pending
   anymore *in the list register*
2) resample the line level and propagate it to the pending state

But these two actions shouldn't be linked, and we should *always*
resample the line level, no matter what state is in the list
register. Otherwise, we may end-up injecting spurious interrupts
that have been already retired.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-05-31 16:12:15 +02:00
Christoffer Dall fa89c77e89 KVM: arm/arm64: vgic-v3: Clear all dirty LRs
When saving the state of the list registers, it is critical to
reset them zero, as we could otherwise leave unexpected EOI
interrupts pending for virtual level interrupts.

Cc: stable@vger.kernel.org # v4.6+
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-05-31 16:12:09 +02:00
Christoffer Dall 4d3afc9bad KVM: arm/arm64: vgic-v2: Clear all dirty LRs
When saving the state of the list registers, it is critical to
reset them zero, as we could otherwise leave unexpected EOI
interrupts pending for virtual level interrupts.

Cc: stable@vger.kernel.org # v4.6+
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-05-31 16:09:28 +02:00
Mark Rutland 604c8e676e arm64: enable CONFIG_SET_MODULE_RONX by default
The SET_MODULE_RONX protections are effectively the same as the
DEBUG_RODATA protections we enabled by default back in commit
57efac2f71 ("arm64: enable CONFIG_DEBUG_RODATA by default"). It
seems unusual to have one but not the other.

As evidenced by the help text, the rationale appears to be that
SET_MODULE_RONX interacts poorly with tracing and patching, but both of
these make use of the insn framework, which takes SET_MODULE_RONX into
account. Any remaining issues are bugs which should be fixed regardless
of the default state of the option.

This patch enables DEBUG_SET_MODULE_RONX by default, and replaces the
help text with a new wording derived from the DEBUG_RODATA help text,
which better describes the functionality. Previously, the DEBUG_RODATA
entry was inconsistently indented with spaces, which are replaced with
tabs as with the other Kconfig entries.

Additionally, the wording of recommended defaults is made consistent for
all options. These are placed in a new paragraph, unquoted, as a full
sentence (with a period/full stop) as this appears to be the most common
form per $(git grep 'in doubt').

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-05-31 14:23:29 +01:00
Robin Murphy db413b51c0 arm64: Remove orphaned __addr_ok() definition
Since commit 12a0ef7b0a ("arm64: use generic strnlen_user and
strncpy_from_user functions"), the definition of __addr_ok() has been
languishing unused; eradicate the sucker.

CC: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-05-31 13:11:11 +01:00
Thomas Huth 8dd75ccb57 powerpc: Use privileged SPR number for MMCR2
We are already using the privileged versions of MMCR0, MMCR1
and MMCRA in the kernel, so for MMCR2, we should better use
the privileged versions, too, to be consistent.

Fixes: 240686c136 ("powerpc: Initialise PMU related regs on Power8")
Cc: stable@vger.kernel.org # v3.10+
Suggested-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-05-31 20:08:32 +10:00
Thomas Huth d23fac2b27 powerpc: Fix definition of SIAR and SDAR registers
The SIAR and SDAR registers are available twice, one time as SPRs
780 / 781 (unprivileged, but read-only), and one time as the SPRs
796 / 797 (privileged, but read and write). The Linux kernel code
currently uses the unprivileged  SPRs - while this is OK for reading,
writing to that register of course does not work.
Since the KVM code tries to write to this register, too (see the mtspr
in book3s_hv_rmhandlers.S), the contents of this register sometimes get
lost for the guests, e.g. during migration of a VM.
To fix this issue, simply switch to the privileged SPR numbers instead.

Cc: stable@vger.kernel.org
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-05-31 20:07:56 +10:00
Will Deacon ab2e1b8923 Revert "arm64: hugetlb: partial revert of 66b3923a1a0f"
This reverts commit ff7925848b.

Now that the contiguous-hint hugetlb regression has been debugged and
fixed upstream by 66ee95d16a ("mm: exclude HugeTLB pages from THP
page_mapped() logic"), we can revert the previous partial revert of this
feature.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-05-31 11:00:09 +01:00
hongkun.cao 5edf673d07 pinctrl: mediatek: fix dual-edge code defect
When a dual-edge irq is triggered, an incorrect irq will be reported on
condition that the external signal is not stable and this incorrect irq
has been registered.
Correct the register offset.

Cc: stable@vger.kernel.org
Signed-off-by: Hongkun Cao <hongkun.cao@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-05-31 10:13:45 +02:00
Arnd Bergmann d0196c8d5d drm/omap: include gpio/consumer.h where needed
A lot of the display drivers for OMAP use the gpio descriptor functions
that are only available in linux/gpio.h if GPIOLIB is enabled and
otherwise produce a build error:

drivers/gpu/drm/omapdrm/displays/encoder-opa362.c: In function 'opa362_enable':
drivers/gpu/drm/omapdrm/displays/encoder-opa362.c:101:3: error: implicit declaration of function 'gpiod_set_value_cansleep' [-Werror=implicit-function-declaration]
drivers/gpu/drm/omapdrm/displays/panel-dpi.c: In function 'panel_dpi_probe_pdata':
drivers/gpu/drm/omapdrm/displays/panel-dpi.c:189:23: error: implicit declaration of function 'gpio_to_desc' [-Werror=implicit-function-declaration]
drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c: In function 'sharp_ls_enable':
drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c:120:3: error: implicit declaration of function 'gpiod_set_value_cansleep' [-Werror=implicit-function-declaration]

This replaces the existing linux/gpio.h with linux/gpio/consumer.h
where needed. In case of panel-lgphilips-lb035q02.c however, we
also have to include linux/gpio.h to get the definition of gpio_is_valid
and gpio_set_value_cansleep that are used for the non-DT case.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[tomi.valkeinen@ti.com: resolved conflicts]
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-05-31 08:30:14 +03:00
Arnd Bergmann 2d8024534a drm/omap: include linux/seq_file.h where needed
The omapdrm driver relies on this header to be included
implicitly, but this does not always work, and I get
this error in randconfig builds:

gpu/drm/omapdrm/dss/hdmi_phy.c: In function 'hdmi_phy_dump':
gpu/drm/omapdrm/dss/hdmi_phy.c:34:2: error: implicit declaration of function 'seq_printf' [-Werror=implicit-function-declaration]
gpu/drm/omapdrm/dss/hdmi_wp.c: In function 'hdmi_wp_dump':
gpu/drm/omapdrm/dss/hdmi_wp.c:26:2: error: implicit declaration of function 'seq_printf' [-Werror=implicit-function-declaration]
gpu/drm/omapdrm/dss/hdmi_pll.c: In function 'hdmi_pll_dump':
gpu/drm/omapdrm/dss/hdmi_pll.c:30:2: error: implicit declaration of function 'seq_printf' [-Werror=implicit-function-declaration]

This adds the #include statements in all files that have
a seq_printf statement.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-05-31 08:30:14 +03:00
Peter Ujfalusi 62cb0751c8 Revert "drm/omap: no need to select OMAP2_DSS"
This reverts commit 1c278e5e37.

If DRM_OMAP does not select OMAP2_DSS it is possible to build a kernel with
DRM_OMAP only and not selecting OMAP2_DSS. Since omapdrm depends on
OMAP2_DSS this will result on broken kernel build.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-05-31 08:30:14 +03:00
Peter Ujfalusi 973999aa01 drm/omap: Remove regulator API abuse
regulator_can_change_voltage() is deprecated and it's use is not necessary
as commit:
6a0028b3dd regulator: Deprecate regulator_can_change_voltage()
describers it clearly.

Also, regulator_set_voltage() is misused in the driver, as it is
supposed to be used only in cases where the regulator voltage needs to
be changed dynamically at runtime. In DSS's case, we always want a fixed
voltage, set in the .dts files.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-05-31 08:28:31 +03:00
Jim Lodes 4bafcbc77f OMAPDSS: HDMI5: Change DDC timings
The DDC scl high and low times were set to the minimum values
from the i2c specification, but the i2c specification takes into
account the rise time and fall time to calculate the frequency.
To pass HDMI certification DDC can not exceed 100kHz therefore in
a system where the rise times and fall times are negligible the high
and low times for scl need to be 10us.

Signed-off-by: Jim Lodes <jim.lodes@garmin.com>
Signed-off-by: J.D. Schroeder <jay.schroeder@garmin.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-05-31 08:20:43 +03:00
Jim Lodes 08f707ac3e OMAPDSS: HDMI5: Fix AVI infoframe
The AVI infoframe R0-R3 in the 2nd data byte represents the
Active Format Aspect Ratio. It is four bits long not two bits.
This fixes that mask used to extract the bits before writing the
bits to the hardware registers.

Signed-off-by: Jim Lodes <jim.lodes@garmin.com>
Signed-off-by: J.D. Schroeder <jay.schroeder@garmin.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-05-31 08:20:42 +03:00
Tomi Valkeinen 91cd220aad drm/omap: fix OMAP4 hdmi_core_powerdown_disable()
hdmi_core_powerdown_disable() is supposed to disable HDMI core's
power-down mode. However, the function sets the power-down bit to 0,
which means "enable power-down".

This hasn't caused any issues as the PD seems to affect only interrupts
from HDMI core, and none of those interrupts are used at the moment. CEC
functionality requires core interrupts, and the PD mode needs to be
fixed.

This patch fixes hdmi_core_powerdown_disable() to actually disable the
PD mode.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
2016-05-31 08:20:42 +03:00
Tomi Valkeinen d9e32ecda4 drm/omap: Fix missing includes
With certain kernel config options many omapdrm files fail to compile
due to missing include of linux/gpio/consumer.h and linux/of.h.

This patch adds those includes.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Dan Murphy <dmurphy@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2016-05-31 08:20:42 +03:00