Media references belong to V4L namespace. Fix a lot of broken
links when including videodev2.h and probably fixing several
other broken cross-references between different files inside
media docs.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <b69fc5bd43da7d326b9f4720df59388088c64065.1759329363.git.mchehab+huawei@kernel.org>
Improve the suggestions algorithm by using get_close_matches() if
no suggestions with the same name are found. As we're now building
a dict, when the name is identical, but on a different domain,
the search is O(1), making it a lot faster.
The get_close_matches is also fast, as there is just one loop,
instead of 3.
This can be useful to detect typos on references, with could
be the base of a futuere extension that will handle ref unmatches
for the entire build, allowing someone to find typos and fix them.
As difflib and get_close_matches are there since the early
Python 3.x days, we don't need to handle any extra dependencies
to use it.
We're keeping the default values for the search, e.g. n=3, cutoff=0.6.
With that, we now have things like:
$ make SPHINXDIRS="userspace-api/media" htmldocs
...
include/uapi/linux/videodev2.h:199: WARNING: Invalid xref: c:type:`v4l2_memory`. Possible alternatives:
c:type:`v4l2_meta_format` (from v4l/dev-meta)
c:type:`v4l2_rect` (from v4l/dev-overlay)
c:type:`v4l2_area` (from v4l/ext-ctrls-image-source) [ref.missing]
...
include/uapi/linux/videodev2.h:1985: WARNING: Invalid xref: c:type:`V4L.v4l2_queryctrl`. Possible alternatives:
std🏷️`v4l2-queryctrl` (from v4l/vidioc-queryctrl)
std🏷️`v4l2-query-ext-ctrl` (from v4l/vidioc-queryctrl)
At the first example, it was not a typo, but a symbol that doesn't
seem to be properly documented. The second example points to
v4l2-queryctrl, which is a close match for the symbol.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <7365feb74cbdd6b982c87baf5863360ab98cf727.1759329363.git.mchehab+huawei@kernel.org>
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.
Use the new :toc: flag for media controller and enable warnings.
Here, we need to adjust the exceptions file to setup the C
namespace accordingly.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <5c8a87be712397563fc8ca914c3d92fe675e4071.1759329363.git.mchehab+huawei@kernel.org>
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.
Use the new :toc: flag for LIRC and enable warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <94dc601b4777ca544489ffc6cef9a2da5fe28e0e.1759329363.git.mchehab+huawei@kernel.org>
Except for two exception rules and dmx.h, the other files
are already handling properly cross references.
Fix the two exception rules for frontend.h, as those are
false-positives:
include/uapi/linux/dvb/frontend.h:959: WARNING: can't link to: c:type:: FE_GET_PROPERTY
include/uapi/linux/dvb/frontend.h:933: WARNING: can't link to: c:func:: FE_SET_FRONTEND_TUNE_MODE
The dmx.h are actual issues that will require an extra
patch to fill gaps.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <9ae6556ebd47de4f066a149ab0bbe7ce27acf2c4.1759329363.git.mchehab+huawei@kernel.org>
All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.
Use the new :toc: flag for DVB.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <dbe95d83ae2117ed532fda423fd1c1d9906b7a19.1759329363.git.mchehab+huawei@kernel.org>
Current regex is limited to only some c-domain reftypes.
There are several others.
Change the code to pick the name specified there.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <5c146923d1e3183893f290216fb1378954e2e540.1759329363.git.mchehab+huawei@kernel.org>
C domain supports a ".. c:namespace::" tag that allows setting a
symbol namespace. This is used within the kernel to avoid warnings
about duplicated symbols. This is specially important for syscalls,
as each subsystem may have their own documentation for them.
This is specially true for ioctl.
When such tag is used, all C domain symbols have c++ style,
e.g. they'll become "{namespace}.{reference}".
Allow specifying C namespace at the exception files, avoiding
the need of override rules for every symbol.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <cc27ec60ceb3bdac4197fb7266d2df8155edacda.1759329363.git.mchehab+huawei@kernel.org>
Add an extra parameter to parse_file to make it handle exceptions
internally, cleaning up the API.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <8575bbc94ff706aa7e7cc3a188399ca17a3169e6.1759329363.git.mchehab+huawei@kernel.org>
Split the logic which parses exceptions on two stages, preparing
the exceptions file to have rules that will affect xref generation.
For now, preserve the original API.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <da9ca5f2ce1ffcfb355e32e676ff013607c227e0.1759329363.git.mchehab+huawei@kernel.org>
Specially when using c::namespace, it is not hard to break
a reference by forgetting to add a domain. Also, different
cases and using "-"/"_" the wrong way are typical cases that
people often gets wrong.
We might use a more complex logic here to also check for typos,
but let's keep it plain, simple.
This is enough to get thos exeptions from media controller:
.../include/uapi/linux/media.h:26: WARNING: Invalid xref: c:type:`media_device_info`. Possible alternatives:
c:type:`MC.media_device_info` (from mediactl/media-ioc-device-info)
.../include/uapi/linux/media.h:149: WARNING: Invalid xref: c:type:`media_entity_desc`. Possible alternatives:
c:type:`MC.media_entity_desc` (from mediactl/media-ioc-enum-entities)
.../include/uapi/linux/media.h:228: WARNING: Invalid xref: c:type:`media_link_desc`. Possible alternatives:
c:type:`MC.media_link_desc` (from mediactl/media-ioc-enum-links)
.../include/uapi/linux/media.h:235: WARNING: Invalid xref: c:type:`media_links_enum`. Possible alternatives:
c:type:`MC.media_links_enum` (from mediactl/media-ioc-enum-links)
.../include/uapi/linux/media.h:212: WARNING: Invalid xref: c:type:`media_pad_desc`. Possible alternatives:
c:type:`MC.media_pad_desc` (from mediactl/media-ioc-enum-links)
.../include/uapi/linux/media.h:298: WARNING: Invalid xref: c:type:`media_v2_entity`. Possible alternatives:
c:type:`MC.media_v2_entity` (from mediactl/media-ioc-g-topology)
.../include/uapi/linux/media.h:312: WARNING: Invalid xref: c:type:`media_v2_interface`. Possible alternatives:
c:type:`MC.media_v2_interface` (from mediactl/media-ioc-g-topology)
.../include/uapi/linux/media.h:307: WARNING: Invalid xref: c:type:`media_v2_intf_devnode`. Possible alternatives:
c:type:`MC.media_v2_intf_devnode` (from mediactl/media-ioc-g-topology)
.../include/uapi/linux/media.h:341: WARNING: Invalid xref: c:type:`media_v2_link`. Possible alternatives:
c:type:`MC.media_v2_link` (from mediactl/media-ioc-g-topology)
.../include/uapi/linux/media.h:333: WARNING: Invalid xref: c:type:`media_v2_pad`. Possible alternatives:
c:type:`MC.media_v2_pad` (from mediactl/media-ioc-g-topology)
.../include/uapi/linux/media.h:349: WARNING: Invalid xref: c:type:`media_v2_topology`. Possible alternatives:
c:type:`MC.media_v2_topology` (from mediactl/media-ioc-g-topology)
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <4c75d277e950e619ea00ba2dea336853a4aac976.1759329363.git.mchehab+huawei@kernel.org>
On TOC output, we need to embeed line numbers with ViewList.
Change the parse class to produce a line-number parsed result,
and adjust the output accordingly.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <74eed96e32f79eaaef7a99ffe7c3224fed369c27.1759329363.git.mchehab+huawei@kernel.org>
When used in practice, one may want to have multiple header
files on a single rst file, like:
***********************
Digital TV uAPI symbols
***********************
.. contents:: Table of Contents
:depth: 2
:local:
Frontend
========
.. kernel-include:: include/uapi/linux/dvb/frontend.h
:generate-cross-refs:
:toc:
Demux
=====
.. kernel-include:: include/uapi/linux/dvb/dmx.h
:generate-cross-refs:
:toc:
...
So, don't add ..contents:: here.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <4bf353e5248133a3b0abd82519a38453402fe7c6.1759329363.git.mchehab+huawei@kernel.org>
Prevent enabling panel replay if the sink doesn't support this due to
DSC being enabled.
Panel replay has two modes, updating full frames or only selected
regions of the frame. If the sink doesn't support Panel Replay in full
frame update mode with DSC prevent Panel Replay completely if DSC is
enabled. If the sink doesn't support Panel Replay only in the selective
update mode while DSC is enabled, it will still support Panel Replay in
the full frame update mode, so only prevent selective updates in this
case.
v2:
- Use Panel Replay instead of PR in debug prints. (Jouni)
- Rebase on change tracking the link DSC state in the crtc state.
Cc: Jouni Högander <jouni.hogander@intel.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/14869
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://lore.kernel.org/r/20251015161934.262108-8-imre.deak@intel.com
The state of all the CRTCs on an MST link must be recomputed, if DSC
gets enabled on any of the CRTCs on the link. For instance an MST
docking station's Panel Replay capability may depend on whether DSC is
enabled on any of the dock's streams (aka CRTCs). To assist the Panel
Replay state computation for a CRTC based on the above, track in the
CRTC state if DSC is enabled on any CRTC on an MST link.
The intel_link_bw_limits::force_fec_pipes mask is used for a reason
similar to the above: enable FEC on all CRTCs of a non-UHBR (8b10b) MST
link if DSC is enabled on any of the link's CRTCs. The FEC enabled state
for a CRTC doesn't indicate if DSC is enabled on a UHBR MST link (FEC is
always enabled by the HW for UHBR, hence it's not tracked by the
intel_crtc_state::fec_enable flag for such links, where this flag is
always false).
Based on the above, to be able to determine the DSC state on both
non-UHBR and UHBR MST links, track the more generic DSC-enabled-on-link
state (instead of the FEC-enabled-on-link state) for each CRTC in
intel_link_bw_limits.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://lore.kernel.org/r/20251015161934.262108-7-imre.deak@intel.com
Track whether DSC is enabled on any CRTC on a link. On DP-SST (and DSI)
this will always match the CRTC's DSC state, those links having only a
single stream (aka CRTC). For instance, on DP-MST if DSC is enabled for
CRTC#0, but disabled for CRTC#1, the DSC/FEC state for these CRTCs will
be as follows:
CRTC#0:
- compression_enable = true
- compression_enabled_on_link = true
- fec_enable = true for 8b10b, false for 128b132b
CRTC#1:
- compression_enable = false
- compression_enabled_on_link = true
- fec_enable = true for 8b10b, false for 128b132b
This patch only sets compression_enabled_on_link for CRTC#0 above and
enables FEC on CRTC#0 if DSC was enabled on any other CRTC on the 8b10b
MST link. A follow-up change will make sure that the state of all the
CRTCs (CRTC#1 above) on an MST link is recomputed if DSC gets enabled on
any CRTC, setting compression_enabled_on_link and fec_enable for these.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://lore.kernel.org/r/20251015161934.262108-6-imre.deak@intel.com
Export the helper function to determine if FEC is required on a non-UHBR
(8b10b) SST or MST link. A follow up change will take this into use for
MST as well.
While at it determine the output type from the CRTC state, which allows
dropping the intel_dp argument. Also make the function return the
required FEC state, instead of setting this in the CRTC state, which
allows only querying this requirement, without changing the state.
Also rename the function to intel_dp_needs_8b10b_fec(), to clarify that
the function determines if FEC is required on an 8b10b link (on 128b132b
links FEC is always enabled by the HW implicitly, so the function will
return false for that case).
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://lore.kernel.org/r/20251015161934.262108-4-imre.deak@intel.com
Atm, in the DP SST case the FEC state is computed before
intel_crtc_state::port_clock is initialized, hence intel_dp_is_uhbr()
will always return false and the FEC state will be always computed
assuming a non-UHBR link.
This happens to work, since the FEC state is recomputed later in
intel_dp_mtp_tu_compute_config(), where port_clock will be set already,
so intel_crtc_state::fec_enable will be reset as expected for UHBR. This
also depends on link rates being tried in an increasing order (i.e. from
non-UHBR -> UHBR link rates) in dsc_compute_link_config(), thus
intel_crtc_state::fec_enable being set for the non-UHBR rates and
getting reset for the first UHBR rate as expected.
A follow-up change will reuse intel_dp_fec_compute_config() for the DP
MST state computation, prepare for that here, making sure that the
function determines the correct intel_crtc_state::fec_enable=false state
for UHBR link rates based on the above.
The DP SST and MST state computation should be further unified to avoid
computing/setting the intel_crtc_state::fec_enable state multiple times,
but that's left for a follow-up change. For now add only code comments
about this.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://lore.kernel.org/r/20251015161934.262108-3-imre.deak@intel.com
Add a helper to enable the DSC compression configuration for a CRTC.
Follow-up changes will introduce tracking for the same DSC state on the
whole link, which will need to be set whenever DSC is enabled for the
CRTC. Also, according to the above, when querying the DSC state on the
link, both the CRTC's and the link's DSC state must be considered.
Setting the DSC configuration for a CRTC and querying the DSC
configuration for the link (added by follow-up changes) is better done
via helper functions based on the above, prepare for that here.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://lore.kernel.org/r/20251015161934.262108-2-imre.deak@intel.com
This fixes the following build error
CLNG-BPF [test_progs] verifier_global_ptr_args.bpf.o
progs/verifier_global_ptr_args.c:228:5: error: redefinition of 'off' as
different kind of symbol
228 | u32 off;
| ^
The symbol 'off' was previously defined in
tools/testing/selftests/bpf/tools/include/vmlinux.h, which includes an
enum i40e_ptp_gpio_pin_state from
drivers/net/ethernet/intel/i40e/i40e_ptp.c:
enum i40e_ptp_gpio_pin_state {
end = -2,
invalid = -1,
off = 0,
in_A = 1,
in_B = 2,
out_A = 3,
out_B = 4,
};
This enum is included when CONFIG_I40E is enabled. As of commit
032676ff82 ("LoongArch: Update Loongson-3 default config file"),
CONFIG_I40E is set in the defconfig, which leads to the conflict.
Renaming the local variable avoids the redefinition and allows the
build to succeed.
Suggested-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Brahmajit Das <listout@listout.xyz>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20251017171551.53142-1-listout@listout.xyz
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
th1520 support Zfh ISA extension.
It supports the same RISC-V extensions as SG2042.
commit cb074bed11 ("riscv: dts: sophgo: add zfh for sg2042")
Signed-off-by: Han Gao <rabenda.cn@gmail.com>
Reviewed-by: Drew Fustini <fustini@kernel.org>
Signed-off-by: Drew Fustini <fustini@kernel.org>
Existing rv64 hardware conforms to the rva20 profile.
Ziccrse is an additional extension required by the rva20 profile, so
th1520 has this extension.
Signed-off-by: Han Gao <rabenda.cn@gmail.com>
Reviewed-by: Drew Fustini <fustini@kernel.org>
Signed-off-by: Drew Fustini <fustini@kernel.org>
The timer mode is initialized to NO_PREEMPT mode by default,
this disables preemption and force execution in atomic context
causing issue on PREEMPT_RT configurations when invoking
spin_lock_bh(), leading to the following warning:
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6107, name: syz.0.17
preempt_count: 1, expected: 0
RCU nest depth: 1, expected: 1
Preemption disabled at:
[<ffffffff891fce58>] bpf_test_timer_enter+0xf8/0x140 net/bpf/test_run.c:42
Fix this, by removing NO_PREEMPT/NO_MIGRATE mode check.
Also, the test timer context no longer needs explicit calls to
migrate_disable()/migrate_enable() with rcu_read_lock()/rcu_read_unlock().
Use helpers rcu_read_lock_dont_migrate() and rcu_read_unlock_migrate()
instead.
Reported-by: syzbot+1f1fbecb9413cdbfbef8@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=1f1fbecb9413cdbfbef8
Suggested-by: Yonghong Song <yonghong.song@linux.dev>
Suggested-by: Menglong Dong <menglong.dong@linux.dev>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Tested-by: syzbot+1f1fbecb9413cdbfbef8@syzkaller.appspotmail.com
Co-developed-by: Brahmajit Das <listout@listout.xyz>
Signed-off-by: Brahmajit Das <listout@listout.xyz>
Signed-off-by: Sahil Chandna <chandna.sahil@gmail.com>
Link: https://lore.kernel.org/r/20251014185635.10300-1-chandna.sahil@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
We intend that EL0 exception handlers unmask all DAIF exceptions
before calling exit_to_user_mode().
When completing single-step of a suspended breakpoint, we do not call
local_daif_restore(DAIF_PROCCTX) before calling exit_to_user_mode(),
leaving all DAIF exceptions masked.
When pseudo-NMIs are not in use this is benign.
When pseudo-NMIs are in use, this is unsound. At this point interrupts
are masked by both DAIF.IF and PMR_EL1, and subsequent irq flag
manipulation may not work correctly. For example, a subsequent
local_irq_enable() within exit_to_user_mode_loop() will only unmask
interrupts via PMR_EL1 (leaving those masked via DAIF.IF), and
anything depending on interrupts being unmasked (e.g. delivery of
signals) will not work correctly.
This was detected by CONFIG_ARM64_DEBUG_PRIORITY_MASKING.
Move the call to `try_step_suspended_breakpoints()` outside of the check
so that interrupts can be unmasked even if we don't call the step handler.
Fixes: 0ac7584c08 ("arm64: debug: split single stepping exception entry")
Cc: <stable@vger.kernel.org> # 6.17
Signed-off-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
[catalin.marinas@arm.com: added Mark's rewritten commit log and some whitespace]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The GIC CDEOI system instruction requires the Rt field to be set to 0b11111
otherwise the instruction behaviour becomes CONSTRAINED UNPREDICTABLE.
Currenly, its usage is encoded as a system register write, with a constant
0 value:
write_sysreg_s(0, GICV5_OP_GIC_CDEOI)
While compiling with GCC, the 0 constant value, through these asm
constraints and modifiers ('x' modifier and 'Z' constraint combo):
asm volatile(__msr_s(r, "%x0") : : "rZ" (__val));
forces the compiler to issue the XZR register for the MSR operation (ie
that corresponds to Rt == 0b11111) issuing the right instruction encoding.
Unfortunately LLVM does not yet understand that modifier/constraint
combo so it ends up issuing a different register from XZR for the MSR
source, which in turns means that it encodes the GIC CDEOI instruction
wrongly and the instruction behaviour becomes CONSTRAINED UNPREDICTABLE
that we must prevent.
Add a conditional to write_sysreg_s() macro that detects whether it
is passed a constant 0 value and issues an MSR write with XZR as source
register - explicitly doing what the asm modifier/constraint is meant to
achieve through constraints/modifiers, fixing the LLVM compilation issue.
Fixes: 7ec80fb3f0 ("irqchip/gic-v5: Add GICv5 PPI support")
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Cc: Sascha Bischoff <sascha.bischoff@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Commit 29d6d30f5c ("Btrfs: send, don't send rmdir for same target
multiple times") has fixed an issue that a send stream contained a rmdir
operation for the same directory multiple times. After that fix we keep
track of the last directory for which we sent a rmdir operation and
compare with it before sending a rmdir for the parent inode of a deleted
hardlink we are processing. But there is still a corner case that in
between rmdir dir operations for the same inode we find deleted hardlinks
for other parent inodes, so tracking just the last inode for which we sent
a rmdir operation is not enough.
Hardlinks of a file in the same directory are stored in the same INODE_REF
item, but if the number of hardlinks is too large and can not fit in a
leaf, we use INODE_EXTREF items to store them. The key of an INODE_EXTREF
item is (inode_id, INODE_EXTREF, hash[name, parent ino]), so between two
hardlinks for the same parent directory, we can find others for other
parent directories. For example for the reproducer below we get the
following (from a btrfs inspect-internal dump-tree output):
item 0 key (259 INODE_EXTREF 2309449) itemoff 16257 itemsize 26
index 6925 parent 257 namelen 8 name: foo.6923
item 1 key (259 INODE_EXTREF 2311350) itemoff 16231 itemsize 26
index 6588 parent 258 namelen 8 name: foo.6587
item 2 key (259 INODE_EXTREF 2457395) itemoff 16205 itemsize 26
index 6611 parent 257 namelen 8 name: foo.6609
(...)
So tracking the last directory's inode number does not work in this case
since we process a link for parent inode 257, then for 258 and then back
again for 257, and that second time we process a deleted link for 257 we
think we have not yet sent a rmdir operation.
Fix this by using a rbtree to keep track of all the directories for which
we have already sent rmdir operations, and add those directories to the
'check_dirs' ref list in process_recorded_refs() only if the directory is
not yet in the rbtree, otherwise skip it since it means we have already
sent a rmdir operation for that directory.
The following test script reproduces the problem:
$ cat test.sh
#!/bin/bash
DEV=/dev/sdi
MNT=/mnt/sdi
mkfs.btrfs -f $DEV
mount $DEV $MNT
mkdir $MNT/a $MNT/b
echo 123 > $MNT/a/foo
for ((i = 1; i <= 1000; i++)); do
ln $MNT/a/foo $MNT/a/foo.$i
ln $MNT/a/foo $MNT/b/foo.$i
done
btrfs subvolume snapshot -r $MNT $MNT/snap1
btrfs send $MNT/snap1 -f /tmp/base.send
rm -r $MNT/a $MNT/b
btrfs subvolume snapshot -r $MNT $MNT/snap2
btrfs send -p $MNT/snap1 $MNT/snap2 -f /tmp/incremental.send
umount $MNT
mkfs.btrfs -f $DEV
mount $DEV $MNT
btrfs receive $MNT -f /tmp/base.send
btrfs receive $MNT -f /tmp/incremental.send
rm -f /tmp/base.send /tmp/incremental.send
umount $MNT
When running it, it fails like this:
$ ./test.sh
(...)
At subvol snap1
At snapshot snap2
ERROR: rmdir o257-9-0 failed: No such file or directory
CC: <stable@vger.kernel.org>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Ting-Chang Hou <tchou@synology.com>
[ Updated changelog ]
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The platform_get_resource() function doesn't return error pointers, it
returns NULL on error. Update the error checking to match.
Fixes: 64d87ccfae ("spi: aspeed: Only map necessary address window region")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/aPJpEnfK31pHz8_w@stanley.mountain
Signed-off-by: Mark Brown <broonie@kernel.org>
The same suspend and resume callbacks are used for both suspend-to-RAM/idle
and hibernation. These callbacks invoke pm_suspend_via_firmware() and
pm_resume_via_firmware(), respectively. In the .freeze() of hibernation,
pm_suspend_via_firmware() returns false, causing the driver to put ISH into
D0i3. However, during the .thaw(), pm_resume_via_firmware() returns true,
leading the driver to treat ISH as resuming from D3 instead of D0i3. The
asymmetric behavior between .freeze() and .thaw() during hibernation can
cause the client connection states on the firmware side and the driver side
to become inconsistent.
To address the inconsistent client connection states issue, separate
hibernate-related callbacks (freeze, thaw) in dev_pm_ops. Since ISH does
not need to save any firmware-related state when entering hibernation, it
is sufficient to call pci_save_state() in .freeze() to prevent the PCI bus
from changing the ISH power state. No actions are required in .thaw().
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
On ISH power-up, the bootloader enters sleep after preparing to load the
main firmware, waiting for the driver to be ready. When the driver is
ready, it sends a void message to wake up the bootloader and load the main
firmware. The main firmware then sends MNG_RESET_NOTIFY to the driver for
handshake.
This void message-based IPC handshake only works if the main firmware has
not been loaded. During hibernation resume, if the restore kernel has the
ISH driver, the driver wakes up the bootloader to load the main firmware
and perform IPC handshake. However, when switching to the image kernel,
since the main firmware is already loaded, sending a void message in the
.restore() callback does not trigger IPC handshake.
By sending MNG_RESET_NOTIFY (IPC RESET message) in ish_wakeup() instead of
a void message, we can explicitly wake up the bootloader and perform IPC
handshake, regardless of the firmware state. Additionally, since
ish_ipc_reset() already waits for recvd_hw_ready, the redundant wait for
recvd_hw_ready in ish_hw_start() is removed.
The timeout for waiting for HW ready is set to 10 seconds, matching the
original timeout value used in ish_wakeup(), to ensure reliable wakeup on
hardware that requires more time, such as the Lenovo ThinkPad X1 Titanium
Gen 1.
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Both ISH firmware and driver can actively send MNG_RESET_NOTIFY to initiate
an FW reset handshake. Upon receiving this, the peer should reply with
MNG_RESET_NOTIFY_ACK. Therefore, the driver should schedule the FW reset
handshake work function when receiving either MNG_RESET_NOTIFY or
MNG_RESET_NOTIFY_ACK.
Previously, driver only scheduled the work function on MNG_RESET_NOTIFY.
This patch ensures the work function is scheduled on both messages, but
only replies with MNG_RESET_NOTIFY_ACK when receiving MNG_RESET_NOTIFY.
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
When ISH resumes from D3, the connection between ishtp clients and firmware
is lost. The ish_resume() function schedules resume_work asynchronously to
re-initiate the connection and then returns immediately. This can cause a
race where the upper-layer ishtp client driver's .resume() may execute
before the connection is fully restored, leaving the client in a stale
connected state. If the client sends messages during this window, the
firmware cannot respond.
To avoid this, reset the ishtp clients' state before returning from
ish_resume() if ISH is resuming from D3.
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
When resuming from suspend-to-RAM or hibernate, the ISH firmware is powered
on from D3, causing all previous client connections between the firmware
and driver to be lost. Although the underlying ishtp bus driver initiates a
client reconnection flow, this process is asynchronous. As a result, when
hid_ishtp_cl_resume_handler() is executed, the connection may not have been
re-established yet. Clearing the suspended flag prematurely in this
scenario can lead to a timeout when the upper-layer HID sensor driver set
feature during resume.
To prevent such timeouts, only clear the suspended flag after confirming
that the connection state is ISHTP_CL_CONNECTED.
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Add the ishtp_get_connection_state() function for struct ishtp_cl, allowing
ishtp client drivers to retrieve the current connection state.
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
During suspend/resume tests with S2IDLE, some ISH functional failures were
observed because of delay in executing ISH resume handler. Here
schedule_work() is used from resume handler to do actual work.
schedule_work() uses system_wq, which is a per CPU work queue. Although
the queuing is not bound to a CPU, but it prefers local CPU of the caller,
unless prohibited.
Users of this work queue are not supposed to queue long running work.
But in practice, there are scenarios where long running work items are
queued on other unbound workqueues, occupying the CPU. As a result, the
ISH resume handler may not get a chance to execute in a timely manner.
In one scenario, one of the ish_resume_handler() executions was delayed
nearly 1 second because another work item on an unbound workqueue occupied
the same CPU. This delay causes ISH functionality failures.
A similar issue was previously observed where the ISH HID driver timed out
while getting the HID descriptor during S4 resume in the recovery kernel,
likely caused by the same workqueue contention problem.
Create dedicated unbound workqueues for all ISH operations to allow work
items to execute on any available CPU, eliminating CPU-specific bottlenecks
and improving resume reliability under varying system loads. Also ISH has
three different components, a bus driver which implements ISH protocols, a
PCI interface layer and HID interface. Use one dedicated work queue for all
of them.
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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Merge tag 'io_uring-6.18-20251016' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Revert of a change that went into an older kernel, and which has been
reported to cause a regression for some write workloads on LVM while
a snapshop is being created
- Fix a regression from this merge window, where some compilers (and/or
certain .config options) would cause an earlier evaluations of a
dereference which would then cause a NULL pointer dereference.
I was only able to reproduce this with OPTIMIZE_FOR_SIZE=y, but David
Howells hit it with just KASAN enabled. Depending on how things
inlined, this makes sense
- Fix for a missing lock around a mem region unregistration
- Fix for ring resizing with the same placement after resize
* tag 'io_uring-6.18-20251016' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/rw: check for NULL io_br_sel when putting a buffer
io_uring: fix unexpected placement on same size resizing
io_uring: protect mem region deregistration
Revert "io_uring/rw: drop -EOPNOTSUPP check in __io_complete_rw_common()"
Format the kernel-doc for SCALE_HW_CALIB_INVALID correctly to
avoid a kernel-doc warning:
Warning: include/linux/misc_cgroup.h:26 Enum value
'MISC_CG_RES_TDX' not described in enum 'misc_res_type'
Fixes: 7c035bea94 ("KVM: TDX: Register TDX host key IDs to cgroup misc controller")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Merge tag 'block-6.18-20251016' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- iostats accounting fixed on multipath retries (Amit)
- secure concatenation response fixup (Martin)
- tls partial record fixup (Wilfred)
- Fix for a lockdep reported issue with the elevator lock and
blk group frozen operations
- Fix for a regression in this merge window, where updating
'nr_requests' would not do the right thing for queues with
shared tags
* tag 'block-6.18-20251016' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
nvme/tcp: handle tls partially sent records in write_space()
block: Remove elevator_lock usage from blkg_conf frozen operations
blk-mq: fix stale tag depth for shared sched tags in blk_mq_update_nr_requests()
nvme-auth: update sc_c in host response
nvme-multipath: Skip nr_active increments in RETRY disposition
- Move rpmb_frame struct and constants to rpmb common header
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Merge tag 'mmc-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull mmc cleanup from Ulf Hansson:
"Move rpmb_frame struct and constants to rpmb common header
This helps us to avoid sharing an immutable branch between our git
trees. I was planning to send it before rc1, but I didn't make it"
* tag 'mmc-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
rpmb: move rpmb_frame struct and constants to common header
A collection of small fixes. All changes are rather boring
device-specific fixes and quirks.
- A few fixes for missing NULL checks
- ASoC NAU8821 fixes for jack and irq handling
- Various fixes for ASoC TAS2781, IDT821034, sc8280xp, max9809x,
wcd938x, and SoundWire
- Usual HD-audio and USB-audio quirks
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Merge tag 'sound-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes. All changes are rather boring
device-specific fixes and quirks:
- A few fixes for missing NULL checks
- ASoC NAU8821 fixes for jack and irq handling
- Various fixes for ASoC TAS2781, IDT821034, sc8280xp, max9809x,
wcd938x, and SoundWire
- Usual HD-audio and USB-audio quirks"
* tag 'sound-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (27 commits)
ALSA: hda/realtek: Fix mute led for HP Omen 17-cb0xxx
ALSA: usb-audio: fix vendor quirk for Logitech H390
ALSA: usb-audio: add volume quirks for MS LifeChat LX-3000
ASoC: amd/sdw_utils: avoid NULL deref when devm_kasprintf() fails
ASoC: max98090/91: fixed max98091 ALSA widget powering up/down
ASoC: dt-bindings: Add compatible string fsl,imx-audio-tlv320
ASoC: codecs: wcd938x-sdw: remove redundant runtime pm calls
ASoC: sdw_utils: add rt1321 part id to codec_info_list
ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card
ALSA: firewire: amdtp-stream: fix enum kernel-doc warnings
ALSA: usb-audio: add mixer_playback_min_mute quirk for Logitech H390
ASoC: nau8821: Avoid unnecessary blocking in IRQ handler
ASoC: nau8821: Add DMI quirk to bypass jack debounce circuit
ASoC: nau8821: Consistently clear interrupts before unmasking
ASoC: nau8821: Generalize helper to clear IRQ status
ASoC: nau8821: Cancel jdet_work before handling jack ejection
ASoC: codecs: Fix gain setting ranges for Renesas IDT821034 codec
ASoC: tas2781: Update ti,tas2781.yaml for adding tas58xx
ASoC: tas2781: Support more newly-released amplifiers tas58xx in the driver
ASoC: qcom: sc8280xp: Add support for QCS615
...
draw:
- Avoid color truncation
gpuvm:
- Avoid kernel-doc warning
sched:
- Avoid double free
i915:
- Skip GuC communication warning if reset is in progress
- Couple frontbuffer related fixes
- Deactivate PSR only on LNL and when selective fetch enabled
xe:
- Increase global invalidation timeout to handle some workloads
- Fix NPD while evicting BOs in an array of VM binds
- Fix resizable BAR to account for possibly needing to move BARs other
than the LMEMBAR
- Fix error handling in xe_migrate_init()
- Fix atomic fault handling with mixed mappings or if the page is
already in VRAM
- Enable media samplers power gating for platforms before Xe2
- Fix de-registering exec queue from GuC when unbinding
- Ensure data migration to system if indicated by madvise with SVM
- Fix kerneldoc for kunit change
- Always account for cacheline alignment on migration
- Drop bogus assertion on eviction
amdgpu:
- Backlight fix
- SI fixes
- CIK fix
- Make CE support debug only
- IP discovery fix
- Ring reset fixes
- GPUVM fault memory barrier fix
- Drop unused structures in amdgpu_drm.h
- JPEG debugfs fix
- VRAM handling fixes for GPUs without VRAM
- GC 12 MES fixes
amdkfd:
- MES fix
ast:
- Fix display output after reboot
bridge:
- lt9211: Fix version check
panthor:
- Fix MCU suspend
qaic:
- Init bootlog in correct order
- Treat remaining == 0 as error in find_and_map_user_pages()
- Lock access to DBC request queue
rockchip:
- vop2: Fix destination size in atomic check
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Merge tag 'drm-fixes-2025-10-17' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"As per usual xe/amdgpu are the leaders, with some i915 and then a
bunch of scattered fixes. There are a bunch of stability fixes for
some older amdgpu cards.
draw:
- Avoid color truncation
gpuvm:
- Avoid kernel-doc warning
sched:
- Avoid double free
i915:
- Skip GuC communication warning if reset is in progress
- Couple frontbuffer related fixes
- Deactivate PSR only on LNL and when selective fetch enabled
xe:
- Increase global invalidation timeout to handle some workloads
- Fix NPD while evicting BOs in an array of VM binds
- Fix resizable BAR to account for possibly needing to move BARs
other than the LMEMBAR
- Fix error handling in xe_migrate_init()
- Fix atomic fault handling with mixed mappings or if the page is
already in VRAM
- Enable media samplers power gating for platforms before Xe2
- Fix de-registering exec queue from GuC when unbinding
- Ensure data migration to system if indicated by madvise with SVM
- Fix kerneldoc for kunit change
- Always account for cacheline alignment on migration
- Drop bogus assertion on eviction
amdgpu:
- Backlight fix
- SI fixes
- CIK fix
- Make CE support debug only
- IP discovery fix
- Ring reset fixes
- GPUVM fault memory barrier fix
- Drop unused structures in amdgpu_drm.h
- JPEG debugfs fix
- VRAM handling fixes for GPUs without VRAM
- GC 12 MES fixes
amdkfd:
- MES fix
ast:
- Fix display output after reboot
bridge:
- lt9211: Fix version check
panthor:
- Fix MCU suspend
qaic:
- Init bootlog in correct order
- Treat remaining == 0 as error in find_and_map_user_pages()
- Lock access to DBC request queue
rockchip:
- vop2: Fix destination size in atomic check"
* tag 'drm-fixes-2025-10-17' of https://gitlab.freedesktop.org/drm/kernel: (44 commits)
drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies
drm/xe/evict: drop bogus assert
drm/xe/migrate: don't misalign current bytes
drm/xe/kunit: Fix kerneldoc for parameterized tests
drm/xe/svm: Ensure data will be migrated to system if indicated by madvise.
drm/gpuvm: Fix kernel-doc warning for drm_gpuvm_map_req.map
drm/i915/psr: Deactivate PSR only on LNL and when selective fetch enabled
drm/ast: Blank with VGACR17 sync enable, always clear VGACRB6 sync off
accel/qaic: Synchronize access to DBC request queue head & tail pointer
accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages()
accel/qaic: Fix bootlog initialization ordering
drm/rockchip: vop2: use correct destination rectangle height check
drm/draw: fix color truncation in drm_draw_fill24
drm/xe/guc: Check GuC running state before deregistering exec queue
drm/xe: Enable media sampler power gating
drm/xe: Handle mixed mappings and existing VRAM on atomic faults
drm/xe/migrate: Fix an error path
drm/xe: Move rebar to be done earlier
drm/xe: Don't allow evicting of BOs in same VM in array of VM binds
drm/xe: Increase global invalidation timeout to 1000us
...
After doing tweaks to the VFs provisioning we may want to restore
back the auto-provisioning mode. Allow that unless VFs are still
enabled. This can be also used to release all VFs resources.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20251015091211.592-5-michal.wajdeczko@intel.com
- subsystem: PM cleanup after all prerequisites are merged with rc1
- usbio: missing addition after all dependencies are in
- slimpro: DT binding schema conversion
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Merge tag 'i2c-for-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- PM cleanup after all prerequisites are merged with rc1
- usbio: missing addition after all dependencies are in
- slimpro: DT binding schema conversion
* tag 'i2c-for-6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: Convert apm,xgene-slimpro-i2c to DT schema
i2c: usbio: Add ACPI device-id for MTL-CVF devices
i2c: Remove redundant pm_runtime_mark_last_busy() calls
When we attempt to tweak VFs configurations using debugfs, stop
assuming that VFs need auto-(un)provisioning.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20251015091211.592-4-michal.wajdeczko@intel.com
We shouldn't attempt to auto-provision VFs once we allow other
provisioning methods. Make the code aware of the new condition.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20251015091211.592-3-michal.wajdeczko@intel.com
As we plan to add more VFs provisioning methods, start moving
related code into single place.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20251015091211.592-2-michal.wajdeczko@intel.com
