As stated at:
http://www.sphinx-doc.org/en/master/usage/restructuredtext/basics.html#footnotes
A footnote should contain either a number, a reference or
an auto number, e. g.:
[1], [#f1] or [#].
While using [*] accidentaly works for html, it fails for other
document outputs. In particular, it causes an error with LaTeX
output, causing all books after networking to not be built.
So, replace it by a valid syntax.
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
The uvd version information was not set correctly for vega20.
Rearrange the logic to set it correctly and fix the warnings
as a result.
v2: fix version formatting for userspace based on feedback from Leo
Fixes: 96ca7f298f (drm/amdgpu/vg20:support new UVD FW version naming convention)
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Vega20 UVD Firmware has a new version naming convention:
[31, 30] for encode interface major
[29, 24] for encode interface minor
[15, 8] for decode interface minor
[7, 0] for hardware family id
Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
if vbios not set the max clock voltage limit table for DC mode,
Set the table as sama as the table for AC mode.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
make custom values survive when S3 sleep transitions.
so not reset the od table if it is not null.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Per VM BOs share the reservation object with the PD and so need to
reserve a shared fence slot for the update.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
enable_best_rng() is used in hwrng_unregister() to switch away from the
currently active RNG, if that is the one currently being removed.
However enable_best_rng() might fail, if the next RNG's init routine
fails. In that case enable_best_rng() will return an error code and
the currently active RNG will remain active.
After unregistering this might lead to crashes due to use-after-free.
Fix this by dropping the currently active RNG, if enable_best_rng()
failed. This will result in no RNG to be active, if the next-best
one failed to initialize.
This problem was introduced by 142a27f0a7
Fixes: 142a27f0a7 ("hwrng: core - Reset user selected rng by...")
Reported-by: Wirz <spam@lukas-wirz.de>
Tested-by: Wirz <spam@lukas-wirz.de>
Signed-off-by: Michael Büsch <m@bues.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We must load the block from the temporary variable here, not directly
from the input.
Also add forgotten zeroing-out of the uninitialized part of the
temporary block (as is done correctly in morus1280.c).
Fixes: 396be41f16 ("crypto: morus - Add generic MORUS AEAD implementations")
Reported-by: syzbot+1fafa9c4cf42df33f716@syzkaller.appspotmail.com
Reported-by: syzbot+d82643ba80bf6937cd44@syzkaller.appspotmail.com
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
keccakf() is the only function in kernel that uses __optimize() macro.
__optimize() breaks frame pointer unwinder as optimized code uses RBP,
and amusingly this always lead to degraded performance as gcc does not
inline across different optimizations levels, so keccakf() wasn't inlined
into its callers and keccakf_round() wasn't inlined into keccakf().
Drop __optimize() to resolve both problems.
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Fixes: 83dee2ce1a ("crypto: sha3-generic - rewrite KECCAK transform to help the compiler optimize")
Reported-by: syzbot+37035ccfa9a0a017ffcf@syzkaller.appspotmail.com
Reported-by: syzbot+e073e4740cfbb3ae200b@syzkaller.appspotmail.com
Cc: linux-crypto@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
We call chtls_free_skb() but then we dereference it on the next lines.
Also "skb" can't be NULL, we just dereferenced it on the line before.
I have moved the free down a couple lines to fix this issue.
Fixes: 17a7d24aa8 ("crypto: chtls - generic handling of data and hdr")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
At the moment, afs_break_callbacks calls afs_break_one_callback() for each
separate FID it was given, and the latter looks up the volume individually
for each one.
However, this is inefficient if two or more FIDs have the same vid as we
could reuse the volume. This is complicated by cell aliasing whereby we
may have multiple cells sharing a volume and can therefore have multiple
callback interests for any particular volume ID.
At the moment afs_break_one_callback() scans the entire list of volumes
we're getting from a server and breaks the appropriate callback in every
matching volume, regardless of cell. This scan is done for every FID.
Optimise callback breaking by the following means:
(1) Sort the FID list by vid so that all FIDs belonging to the same volume
are clumped together.
This is done through the use of an indirection table as we cannot do
an insertion sort on the afs_callback_break array as we decode FIDs
into it as we subsequently also have to decode callback info into it
that corresponds by array index only.
We also don't really want to bubblesort afterwards if we can avoid it.
(2) Sort the server->cb_interests array by vid so that all the matching
volumes are grouped together. This permits the scan to stop after
finding a record that has a higher vid.
(3) When breaking FIDs, we try to keep server->cb_break_lock as long as
possible, caching the start point in the array for that volume group
as long as possible.
It might make sense to add another layer in that list and have a
refcounted volume ID anchor that has the matching interests attached
to it rather than being in the list. This would allow the lock to be
dropped without losing the cursor.
Signed-off-by: David Howells <dhowells@redhat.com>
Alter the dynroot mount so that cells created by manipulation of
/proc/fs/afs/cells and /proc/fs/afs/rootcell and by specification of a root
cell as a module parameter will cause directories for those cells to be
created in the dynamic root superblock for the network namespace[*].
To this end:
(1) Only one dynamic root superblock is now created per network namespace
and this is shared between all attempts to mount it. This makes it
easier to find the superblock to modify.
(2) When a dynamic root superblock is created, the list of cells is walked
and directories created for each cell already defined.
(3) When a new cell is added, if a dynamic root superblock exists, a
directory is created for it.
(4) When a cell is destroyed, the directory is removed.
(5) These directories are created by calling lookup_one_len() on the root
dir which automatically creates them if they don't exist.
[*] Inasmuch as network namespaces are currently supported here.
Signed-off-by: David Howells <dhowells@redhat.com>
The existing implementation allows races between bsg_unregister and
bsg_open paths. bsg_unregister and request_queue cleanup and deletion
may start and complete right after bsg_get_device (in bsg_open path)
retrieves bsg_class_device and releases the mutex. Then bsg_open path
touches freed memory of bsg_class_device and request_queue.
One possible fix is to hold the mutex all the way through bsg_get_device
instead of releasing it after bsg_class_device retrieval.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-Off-By: Anatoliy Glagolev <glagolig@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This function is entirely unused, so remove it and the tag_queue_busy
member of struct request_queue.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pull NVMe fixes from Christoph:
"Fix various little regressions introduced in this merge window, plus
a rework of the fibre channel connect and reconnect path to share the
code instead of having separate sets of bugs. Last but not least a
trivial trace point addition from Hannes."
* 'nvme-4.18' of git://git.infradead.org/nvme:
nvme-fabrics: fix and refine state checks in __nvmf_check_ready
nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
nvme-fabrics: refactor queue ready check
blk-mq: remove blk_mq_tagset_iter
nvme: remove nvme_reinit_tagset
nvme-fc: fix nulling of queue data on reconnect
nvme-fc: remove reinit_request routine
nvme-fc: change controllers first connect to use reconnect path
nvme: don't rely on the changed namespace list log
nvmet: free smart-log buffer after use
nvme-rdma: fix error flow during mapping request data
nvme: add bio remapping tracepoint
nvme: fix NULL pointer dereference in nvme_init_subsystem
If client is smart or lucky enough to create a new context
after each hang, our context banning mechanism will never
catch up, and as a result of that it will be saved from
client banning. This can result in a never ending streak of
gpu hangs caused by bad or malicious client, preventing
access from other legit gpu clients.
Fix this by always incrementing per client ban score if
it hangs in short successions regardless of context ban
scoring. The exception are non bannable contexts. They remain
detached from client ban scoring mechanism.
v2: xchg timestamp, tidyup (Chris)
v3: comment, bannable & banned together (Chris)
Fixes: b083a0870c ("drm/i915: Add per client max context ban limit")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180615104429.31477-1-mika.kuoppala@linux.intel.com
If the test_printf module is loaded before the crng is initialized, the
plain 'p' tests will fail because the printed address will not be hashed
and the buffer will contain "(____ptrval____)" or "(ptrval)" instead
(64-bit vs 32-bit).
Since we cannot wait for the crng to be initialized for an undefined
time, both plain 'p' tests now accept the strings "(____ptrval____)" or
"(ptrval)" as a valid result and print a warning message.
Link: http://lkml.kernel.org/r/20180613171840.29827-1-thierry.escande@linaro.org
Fixes: ad67b74d24 ("printk: hash addresses printed with %p")
To: Andrew Morton <akpm@linux-foundation.org>
To: David Miller <davem@davemloft.net>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: "Tobin C . Harding" <me@tobin.cc>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Thierry Escande <thierry.escande@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
For each platform, we have a few registers that are rewritten with
different values -- they are not part of a sequence, just different parts
of a masked register set at different times (e.g. platform and gen
workarounds). Consolidate these into a single register write to keep the
table compact, important since we are running of room in the current
fixed sized buffer.
While adjusting the construction of the wa table, make it non fatal so
that the driver still loads but keeping the warning and extra details
for inspection.
Inspecting the changes for a Kabylake system,
Before:
Address val mask read
0x07014 0x20002000 0x00002000 0x00002100
0x0E194 0x01000100 0x00000100 0x00000114
0x0E4F0 0x81008100 0x00008100 0xFFFF8120
0x0E184 0x00200020 0x00000020 0x00000022
0x0E194 0x00140014 0x00000014 0x00000114
0x07004 0x00420042 0x00000042 0x000029C2
0x0E188 0x00080000 0x00000008 0x00008030
0x07300 0x80208020 0x00008020 0x00008830
0x07300 0x00100010 0x00000010 0x00008830
0x0E184 0x00020002 0x00000002 0x00000022
0x0E180 0x20002000 0x00002000 0x00002000
0x02580 0x00010000 0x00000001 0x00000004
0x02580 0x00060004 0x00000006 0x00000004
0x07014 0x01000100 0x00000100 0x00002100
0x0E100 0x00100010 0x00000010 0x00008050
After:
Address val mask read
0x02580 0x00070004 0x00000007 0x00000004
0x07004 0x00420042 0x00000042 0x000029C2
0x07014 0x21002100 0x00002100 0x00002100
0x07300 0x80308030 0x00008030 0x00008830
0x0E100 0x00100010 0x00000010 0x00008050
0x0E180 0x20002000 0x00002000 0x00002000
0x0E184 0x00220022 0x00000022 0x00000022
0x0E188 0x00080000 0x00000008 0x00008030
0x0E194 0x01140114 0x00000114 0x00000114
0x0E4F0 0x81008100 0x00008100 0xFFFF8120
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180615120207.13952-1-chris@chris-wilson.co.uk
Add support for the HE in cfg80211 and also add userspace API to
nl80211 to send rate information out, conforming with P802.11ax_D2.0.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
User space tools might be interested in knowing the current
status of the 4ADDR property of an interface (when supported).
Send the status along with the other attributes when replying
to a GET_INTERFACE netlink query.
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Fixes kerneldoc parameter names to match implementation,
rfkill_set_hw_state(), rfkill_set_sw_state().
Fix description of rfkill_resume_polling().
Fix typos in documentation of rfkill_find_type().
Consistently start kerneldoc description with uppercase
letter.
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
The first subfolder is rfkill0, hence rfkillX (X >= 0).
Also fix two trivial typos.
Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Support the new random SN and minimal probe request contents
scan flags for the case of software scan - for hardware scan
the drivers need to opt in, but may need to do only that,
depending on their implementation.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Add the scan flags for randomized SN and minimized probe request
content for improved scan privacy.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
This function is passed many more parameters in the scan case
than in the MLME case, and differentiates the two cases inside.
Split it up and make both versions static to simplify things.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Add flags to pass through to probe request building and
change the "bool directed" to be one of them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
There's a very common pattern to check for a scan flag and
then reject it if an extended feature flag isn't set, factor
this out into a helper function.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
The arguments should be (# of elements, size of each) instead
of the other way around, which really ends up being mostly
equivalent but smatch complains about it, so swap them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Callers of cfg80211_unregister_wdev can free the wdev object
immediately after this function returns. This may crash the kernel
because this wdev object is still in use by other threads.
Add synchronize_rcu() after list_del_rcu to make sure wdev object can
be safely freed.
Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
On init, ieee80211_if_add() dumps the interface. Since that now includes a
dump of the TXQ state, we need to initialise that before the dump happens.
So move up the TXQ initialisation to to before the call to
ieee80211_if_add().
Fixes: 52539ca89f ("cfg80211: Expose TXQ stats and parameters to userspace")
Reported-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Tested-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
We didn't free the workqueue on any errors, nor did we
correctly check for rhashtable allocation errors, nor
did we free the hashtable on error.
Reported-by: Colin King <colin.king@canonical.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Most of the implementations behind cfg80211_get_station will not initialize
sinfo to zero before manipulating it. For example, the member "filled",
which indicates the filled in parts of this struct, is often only modified
by enabling certain bits in the bitfield while keeping the remaining bits
in their original state. A caller without a preinitialized sinfo.filled can
then no longer decide which parts of sinfo were filled in by
cfg80211_get_station (or actually the underlying implementations).
cfg80211_get_station must therefore take care that sinfo is initialized to
zero. Otherwise, the caller may tries to read information which was not
filled in and which must therefore also be considered uninitialized. In
batadv_v_elp_get_throughput's case, an invalid "random" expected throughput
may be stored for this neighbor and thus the B.A.T.M.A.N V algorithm may
switch to non-optimal neighbors for certain destinations.
Fixes: 7406353d43 ("cfg80211: implement cfg80211_get_station cfg80211 API")
Reported-by: Thomas Lauer <holminateur@gmail.com>
Reported-by: Marcel Schmidt <ff.z-casparistrasse@mailbox.org>
Cc: b.a.t.m.a.n@lists.open-mesh.org
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
There is a bunch of tags marking constants with &, which means struct
or enum name. Replace them with %, which is the correct tag for
constants.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
- make sure we only allow internally generates commands in any non-live
state
- only allow connect commands on non-live queues when actually in the
new or connecting states
- treat all other non-live, non-dead states the same as a default
cach-all
This fixes a regression where we could not shutdown a controller
orderly as we didn't allow the internal generated Property Set
command, and also ensures we don't accidentally let a Connect command
through in the wrong state.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
In the ADMIN_ONLY state we don't have any I/O queues, but we should accept
all admin commands without further checks.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Move the is_connected check to the fibre channel transport, as it has no
meaning for other transports. To facilitate this split out a new
nvmf_fail_nonready_command helper that is called by the transport when
it is asked to handle a command on a queue that is not ready.
Also avoid a function call for the queue live fast path by inlining
the check.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
This second Kselftest update for Linux 4.18-rc1:
- fixes a signedness bug in cgroups test
- adds ppc support for kprobe args tests
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Merge tag 'linux-kselftest-4.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull more Kselftest updates from Shuah Khan:
- fix a signedness bug in cgroups test
- add ppc support for kprobe args tests
* tag 'linux-kselftest-4.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kselftest/cgroup: fix a signedness bug
selftests/ftrace: Add ppc support for kprobe args tests
Here is a collection of small fixes on top of the previous update.
All small and obvious fixes. Mostly for usual suspects, USB-audio and
HD-audio, but a few trivial error handling fixes for misc drivers as
well.
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Merge tag 'sound-fix-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here is a collection of small fixes on top of the previous update.
All small and obvious fixes. Mostly for usual suspects, USB-audio and
HD-audio, but a few trivial error handling fixes for misc drivers as
well"
* tag 'sound-fix-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: usb-audio: Always create the interrupt pipe for the mixer
ALSA: usb-audio: Add insertion control for UAC3 BADD
ALSA: usb-audio: Change in connectors control creation interface
ALSA: usb-audio: Add bi-directional terminal types
ALSA: lx6464es: add error handling for pci_ioremap_bar
ALSA: sonicvibes: add error handling for snd_ctl_add
ALSA: usb-audio: Remove explicitly listed Mytek devices
ALSA: usb-audio: Generic DSD detection for XMOS-based implementations
ALSA: usb-audio: Add native DSD support for Mytek DACs
ALSA: hda/realtek - Add shutup hint
ALSA: usb-audio: Disable the quirk for Nura headset
ALSA: hda: add dock and led support for HP ProBook 640 G4
ALSA: hda: add dock and led support for HP EliteBook 830 G5
ALSA: emu10k1: add error handling for snd_ctl_add
ALSA: fm801: add error handling for snd_ctl_add
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Merge tag 'drm-next-2018-06-15' of git://anongit.freedesktop.org/drm/drm
Pull amd drm fixes from Dave Airlie:
"Just a single set of AMD fixes for stuff in -next for -rc1"
* tag 'drm-next-2018-06-15' of git://anongit.freedesktop.org/drm/drm: (47 commits)
drm/amd/powerplay: Set higher SCLK&MCLK frequency than dpm7 in OD (v2)
drm/amd/powerplay: remove uncessary extra gfxoff control call
drm/amdgpu: fix parsing indirect register list v2
drm/amd/include: Update df 3.6 mask and shift definition
drm/amd/pp: Fix OD feature enable failed on Vega10 workstation cards
drm/amd/display: Fix stale buffer object (bo) use
drm/amd/pp: initialize result to before or'ing in data
drm/amd/powerplay: fix wrong clock adjust sequence
drm/amdgpu: Grab/put runtime PM references in atomic_commit_tail()
drm/amd/powerplay: fix missed hwmgr check warning before call gfx_off_control handler
drm/amdgpu: fix CG enabling hang with gfxoff enabled
drm/amdgpu: fix clear_all and replace handling in the VM (v2)
drm/amdgpu: add checking for sos version
drm/amdgpu: fix the missed vcn fw version report
Revert "drm/amdgpu: Add an ATPX quirk for hybrid laptop"
drm/amdgpu/df: fix potential array out-of-bounds read
drm/amdgpu: Fix NULL pointer when load kfd driver with PP block is disabled
drm/gfx9: Update gc goldensetting for vega20.
drm/amd/pp: Allow underclocking when od table is empty in vbios
drm/amdgpu/display: check if ppfuncs exists before using it
...
If server does not support listing interfaces then do not
display empty "Server interfaces" line to avoid confusing users.
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Aurelien Aptel <aaptel@suse.com>
