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1,399,042 commits

Author SHA1 Message Date
Mauro Carvalho Chehab
3f7f3d4941 docs: kernel_include.py: move range logic to a separate function
Cleanup run() function by moving the range logic to a separate
function.

Here, I ended checking the current Sphinx implementation, as it
has some extra logic for the range check.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/12fa2204a9e7e309ae4b8694a37ebad9327ca634.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:43 -06:00
Mauro Carvalho Chehab
012e00dda3 docs: kernel_include.py: move rawtext logic to separate functions
The run function is too complex. merge run() and _run() into
a single function and move the read logic to separate functions.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/04776a94c85b6c931c198a149f08b299c9f571a3.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
39f5f2fa8c docs: kernel_include.py: generate warnings for broken refs
In the past, Sphinx used to warn about broken references. That's
basically the rationale for adding media uAPI files: to get
warnings about missed symbols.

This is not true anymore. So, we need to explicitly check them
after doctree-resolved event.

While here, move setup() to the end, to make it closer to
what we do on other extensions.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/73be9a198746421687e2eee916ccf8bf67980b7d.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
0cb6aee358 docs: kernel_include.py: allow cross-reference generation
kernel_include extension was originally designed to be used by the
media comprehensive uAPI documentation, where, instead of simpler
kernel-doc markups, the uAPI documentation is enriched with a larger
text, with images, complex tables, graphs, etc.

There, we wanted to include the much simpler yet documented .h
file.

This extension is needed to include files from other parts of the
Kernel tree outside Documentation, because the original Sphinx
include tag doesn't allow going outside of the directory passed
via sphinx-build command line.

Yet, the cross-references themselves to the full documentation
were using a perl script to create cross-references against the
comprehensive documentation.

As the perl script is now converted to Phython and there is a
Python class producing an include-compatible output with cross
references, add two optional arguments to kernel_include.py:

1. :generate-cross-refs:

        If present, instead of reading the file, it calls ParseDataStructs()
        class, which converts C data structures into cross-references to
        be linked to ReST files containing a more comprehensive documentation;

        Don't use it together with :start-line: and/or :end-line:, as
        filtering input file line range is currently not supported.

2. :exception-file:

        Used together with :generate-cross-refs:. Points to a file containing
        rules to ignore C data structs or to use a different reference name,
        optionally using a different reference type.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/efc39c8e54a2056ae2fdb94d5006fcb19e227198.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
bb97996500 docs: kernel_include.py: Update its coding style
With the help of tools like black, pylint, autopep8 and flake,
improve the code style in preparation for further changes.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/f64c3af47fdfd632bb5f8eb88e3c7d94b0b84a66.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
319d2a7ebe docs: uapi: media: Makefile: use parse-headers.py
Now that we have a new parser, use it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/7025759744f74058eee55c35e8cd8cb5a2953fca.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
99198814e5 MAINTAINERS: add files from tools/docs to documentation entry
As we now have a tools directory for docs, add it to its
corresponding entry.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/87bbb94e442fe747e24f801d7685856b392b2568.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
242cfe3f77 tools: docs: parse_data_structs.py: add methods to return output
When running it from command line, we want to write an output
file, but when used as a class, one may just want the output
content returned as a string.

Split write_output() on two methods to allow both usecases.

Also add an extra method to produce a TOC.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/c98bdec3380aad54178baf2751a2f1fcd128576b.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
cde494660f tools: docs: parse-headers.py: move it from sphinx dir
As suggested by Jon, we should start having a tools/docs
directory, instead of placing everything under scripts.

In the specific case of parse-headers.py, the previous
location is where we're placing Sphinx extensions, which is
not the right place for execs.

Move it to tools/docs/parse-headers.py.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/0f5ac2d704cffe9834e589b39549d2393e1237ef.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
37497a4dc5 docs: parse-headers.py: simplify the rules for hashes
Normal :ref domain accept either hashes or underscores, but
c-domain ones don't. Fix it and remove unneeded places where
we opt to disable underscore transformation.

Ideally, we should have a rule about the default, or change
the way media docs have their references.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/0c011090272f7a1068545409222f970ddb1ed431.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
285b8d3db2 docs: parse-headers.py: better handle @var arguments
The kernel-doc markups inside headers may contain @var markups.

With the current rule, this would be converted into:

     \* @:c:type:`DMX_BUFFER_FLAG_DISCONTINUITY_INDICATOR <dmx_buffer_flags>`\:

Fix it adding a non-printed space if needed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/8d06bb713d6ec8de65179dd93defe479715409b6.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
a2d58c917c docs: parse-headers.py: improve --help logic
When printing --help, we'd like the name of the files
from __doc__ to match the displayed positional arguments at
both usage and argument description lines.

Use a custom formatter class to convert ``foo`` into ANSI SGR
code to bold the argument, if is TTY, and adjust the help
text to match the argument names.

Here on Plasma, that makes it display it colored, wich is
really cool. Yet, I opted for SGR, as the best is to follow
the terminal color schema for bold.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/2c1e61d1fb1b2a2838b443beee89c1528831997f.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
8a5a85be4d docs: parse-headers.py: convert parse-headers.pl
When the Kernel started to use Sphinx, we had to come up with
a solution to parse media headers. On that time, we didn't have
much experience with Sphinx extensions. So, we came up with our
own script-based solution that were basically implementing a
set of rules we used to have at the Makefile.

Convert it to Python, keeping it bug-compatible with the
original script.

While here, try to better document it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/ae5cfa8dff37e280cc9493fc95a51cd0cc0ba127.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Mauro Carvalho Chehab
b5698da669 docs: parse-headers.pl: improve its debug output format
Change the --debug logic to help comparing its results with
a new python script.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/1064011717951eac257889a3032303c9d4440711.1755872208.git.mchehab+huawei@kernel.org
2025-08-29 15:54:42 -06:00
Bagas Sanjaya
61578493ca Documentation: ocfs2: Properly reindent filecheck operations list
Some of texts in filecheck operations list are indented out of the list.
In particular, the third operation is shown not as the third list
item but rather as a separate paragraph.

Reindent the list so that gets properly rendered as such.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250826024756.16073-1-bagasdotme@gmail.com
2025-08-29 15:50:50 -06:00
Alex Tran
2dddb2792b docs: driver-api pinctrl cleanup
Replace FIXME comments in the pinctrl documentation example with
proper cleanup code:
- Add devm_pinctrl_put() calls in error paths
  (pinctrl_lookup_state, pinctrl_select_state)
  after successful devm_pinctrl_get()
- Set foo->p to NULL when devm_pinctrl_get() fails
- Add ret variable for cleaner error handling
- provides proper example of pinctrl resource management on failure

Signed-off-by: Alex Tran <alex.t.tran@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250827074525.685863-1-alex.t.tran@gmail.com
2025-08-29 15:49:18 -06:00
Liao Yuanhong
f3e8293685 drm/nouveau: Replace redundant return value judgment with PTR_ERR_OR_ZERO()
Replace redundant return value judgment with PTR_ERR_OR_ZERO() to
enhance code readability.

Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://lore.kernel.org/r/20250815133643.418089-1-liaoyuanhong@vivo.com
2025-08-29 17:10:13 -04:00
Linus Torvalds
11e7861d68 ARM:
- Correctly handle 'invariant' system registers for protected VMs
 
 - Improved handling of VNCR data aborts, including external aborts
 
 - Fixes for handling of FEAT_RAS for NV guests, providing a sane
   fault context during SEA injection and preventing the use of
   RASv1p1 fault injection hardware
 
 - Ensure that page table destruction when a VM is destroyed gives an
   opportunity to reschedule
 
 - Large fix to KVM's infrastructure for managing guest context loaded
   on the CPU, addressing issues where the output of AT emulation
   doesn't get reflected to the guest
 
 - Fix AT S12 emulation to actually perform stage-2 translation when
   necessary
 
 - Avoid attempting vLPI irqbypass when GICv4 has been explicitly
   disabled for a VM
 
 - Minor KVM + selftest fixes
 
 RISC-V:
 
 - Fix pte settings within kvm_riscv_gstage_ioremap()
 
 - Fix comments in kvm_riscv_check_vcpu_requests()
 
 - Fix stack overrun when setting vlenb via ONE_REG
 
 x86:
 
 - Use array_index_nospec() to sanitize the target vCPU ID when handling PV
   IPIs and yields as the ID is guest-controlled.
 
 - Drop a superfluous cpumask_empty() check when reclaiming SEV memory, as
   the common case, by far, is that at least one CPU will have entered the
   VM, and wbnoinvd_on_cpus_mask() will naturally handle the rare case where
   the set of have_run_cpus is empty.
 
 Selftests (not KVM):
 
 - Rename the is_signed_type() macro in kselftest_harness.h to is_signed_var()
   to fix a collision with linux/overflow.h.  The collision generates compiler
   warnings due to the two macros having different meaning.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "ARM:

   - Correctly handle 'invariant' system registers for protected VMs

   - Improved handling of VNCR data aborts, including external aborts

   - Fixes for handling of FEAT_RAS for NV guests, providing a sane
     fault context during SEA injection and preventing the use of
     RASv1p1 fault injection hardware

   - Ensure that page table destruction when a VM is destroyed gives an
     opportunity to reschedule

   - Large fix to KVM's infrastructure for managing guest context loaded
     on the CPU, addressing issues where the output of AT emulation
     doesn't get reflected to the guest

   - Fix AT S12 emulation to actually perform stage-2 translation when
     necessary

   - Avoid attempting vLPI irqbypass when GICv4 has been explicitly
     disabled for a VM

   - Minor KVM + selftest fixes

  RISC-V:

   - Fix pte settings within kvm_riscv_gstage_ioremap()

   - Fix comments in kvm_riscv_check_vcpu_requests()

   - Fix stack overrun when setting vlenb via ONE_REG

  x86:

   - Use array_index_nospec() to sanitize the target vCPU ID when
     handling PV IPIs and yields as the ID is guest-controlled.

   - Drop a superfluous cpumask_empty() check when reclaiming SEV
     memory, as the common case, by far, is that at least one CPU will
     have entered the VM, and wbnoinvd_on_cpus_mask() will naturally
     handle the rare case where the set of have_run_cpus is empty.

  Selftests (not KVM):

   - Rename the is_signed_type() macro in kselftest_harness.h to
     is_signed_var() to fix a collision with linux/overflow.h. The
     collision generates compiler warnings due to the two macros having
     different meaning"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (29 commits)
  KVM: arm64: nv: Fix ATS12 handling of single-stage translation
  KVM: arm64: Remove __vcpu_{read,write}_sys_reg_{from,to}_cpu()
  KVM: arm64: Fix vcpu_{read,write}_sys_reg() accessors
  KVM: arm64: Simplify sysreg access on exception delivery
  KVM: arm64: Check for SYSREGS_ON_CPU before accessing the 32bit state
  RISC-V: KVM: fix stack overrun when loading vlenb
  RISC-V: KVM: Correct kvm_riscv_check_vcpu_requests() comment
  RISC-V: KVM: Fix pte settings within kvm_riscv_gstage_ioremap()
  KVM: arm64: selftests: Sync ID_AA64MMFR3_EL1 in set_id_regs
  KVM: arm64: Get rid of ARM64_FEATURE_MASK()
  KVM: arm64: Make ID_AA64PFR1_EL1.RAS_frac writable
  KVM: arm64: Make ID_AA64PFR0_EL1.RAS writable
  KVM: arm64: Ignore HCR_EL2.FIEN set by L1 guest's EL2
  KVM: arm64: Handle RASv1p1 registers
  arm64: Add capability denoting FEAT_RASv1p1
  KVM: arm64: Reschedule as needed when destroying the stage-2 page-tables
  KVM: arm64: Split kvm_pgtable_stage2_destroy()
  selftests: harness: Rename is_signed_type() to avoid collision with overflow.h
  KVM: SEV: don't check have_run_cpus in sev_writeback_caches()
  KVM: arm64: Correctly populate FAR_EL2 on nested SEA injection
  ...
2025-08-29 13:54:26 -07:00
Liao Yuanhong
b639c20e74 f2fs: Use allocate_section_policy to control write priority in multi-devices setups
Introduces two new sys nodes: allocate_section_hint and
allocate_section_policy. The allocate_section_hint identifies the boundary
between devices, measured in sections; it defaults to the end of the device
for single storage setups, and the end of the first device for multiple
storage setups. The allocate_section_policy determines the write strategy,
with a default value of 0 for normal sequential write strategy. A value of
1 prioritizes writes before the allocate_section_hint, while a value of 2
prioritizes writes after it.

This strategy addresses the issue where, despite F2FS supporting multiple
devices, SOC vendors lack multi-devices support (currently only supporting
zoned devices). As a workaround, multiple storage devices are mapped to a
single dm device. Both this workaround and the F2FS multi-devices solution
may require prioritizing writing to certain devices, such as a device with
better performance or when switching is needed due to performance
degradation near a device's end. For scenarios with more than two devices,
sort them at mount time to utilize this feature.

When using this feature with a single storage device, it has almost no
impact. However, for configurations where multiple storage devices are
mapped to the same dm device using F2FS, utilizing this feature can provide
some optimization benefits. Therefore, I believe it should not be limited
to just multi-devices usage.

Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2025-08-29 20:48:47 +00:00
Qingfang Deng
4f54dff818 pppoe: drop sock reference counting on fast path
Now that PPPoE sockets are freed via RCU (SOCK_RCU_FREE), it is no longer
necessary to take a reference count when looking up sockets on the receive
path. Readers are protected by RCU, so the socket memory remains valid
until after a grace period.

Convert fast-path lookups to avoid refcounting:
 - Replace get_item() and sk_receive_skb() in pppoe_rcv() with
   __get_item() and __sk_receive_skb().
 - Rework get_item_by_addr() into __get_item_by_addr() (no refcount and
   move RCU lock into pppoe_ioctl)
 - Remove unnecessary sock_put() calls.

This avoids cacheline bouncing from atomic reference counting and improves
performance on the receive fast path.

Signed-off-by: Qingfang Deng <dqfext@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250828012018.15922-2-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-29 13:39:54 -07:00
Qingfang Deng
72cdc67e7f pppoe: remove rwlock usage
Like ppp_generic.c, convert the PPPoE socket hash table to use RCU for
lookups and a spinlock for updates. This removes rwlock usage and allows
lockless readers on the fast path.

- Mark hash table and list pointers as __rcu.
- Use spin_lock() to protect writers.
- Readers use rcu_dereference() under rcu_read_lock(). All known callers
  of get_item() already hold the RCU read lock, so no additional locking
  is needed.
- get_item() now uses refcount_inc_not_zero() instead of sock_hold() to
  safely take a reference. This prevents crashes if a socket is already
  in the process of being freed (sk_refcnt == 0).
- Set SOCK_RCU_FREE to defer socket freeing until after an RCU grace
  period.
- Move skb_queue_purge() into sk_destruct callback to ensure purge
  happens after an RCU grace period.

Signed-off-by: Qingfang Deng <dqfext@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250828012018.15922-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-29 13:39:53 -07:00
Jakub Kicinski
629840e208 Some fixes for the current cycle:
- mt76: MLO regressions, offchannel handling, list corruption
  - mac80211: scan allocation size, no 40 MHz EHT, signed type
  - rt2x00: (randconfig) build
  - cfg80211: use-after-free
  - iwlwifi: config/old devices, BIOS compatibility
  - mwifiex: vmalloc content leak
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Merge tag 'wireless-2025-08-28' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless

Johannes Berg says:

====================
Some fixes for the current cycle:
 - mt76: MLO regressions, offchannel handling, list corruption
 - mac80211: scan allocation size, no 40 MHz EHT, signed type
 - rt2x00: (randconfig) build
 - cfg80211: use-after-free
 - iwlwifi: config/old devices, BIOS compatibility
 - mwifiex: vmalloc content leak

* tag 'wireless-2025-08-28' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless: (29 commits)
  wifi: iwlwifi: cfg: add back more lost PCI IDs
  wifi: iwlwifi: fix byte count table for old devices
  wifi: iwlwifi: cfg: restore some 1000 series configs
  wifi: mwifiex: Initialize the chan_stats array to zero
  wifi: mac80211: do not permit 40 MHz EHT operation on 5/6 GHz
  wifi: iwlwifi: uefi: check DSM item validity
  wifi: iwlwifi: acpi: check DSM func validity
  wifi: iwlwifi: if scratch is ~0U, consider it a failure
  wifi: mt76: fix linked list corruption
  wifi: mt76: free pending offchannel tx frames on wcid cleanup
  wifi: mt76: mt7915: fix list corruption after hardware restart
  wifi: mt76: mt7996: add missing check for rx wcid entries
  wifi: mt76: do not add non-sta wcid entries to the poll list
  wifi: mt76: mt7996: fix crash on some tx status reports
  wifi: mt76: mt7996: use the correct vif link for scanning/roc
  wifi: mt76: mt7996: disable beacons when going offchannel
  wifi: mt76: prevent non-offchannel mgmt tx during scan/roc
  wifi: mt76: mt7925: skip EHT MLD TLV on non-MLD and pass conn_state for sta_cmd
  wifi: mt76: mt7925u: use connac3 tx aggr check in tx complete
  wifi: mt76: mt7925: fix the wrong bss cleanup for SAP
  ...
====================

Link: https://patch.msgid.link/20250828122654.1167754-8-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-29 13:35:13 -07:00
Keguang Zhang
ad79935dbc MIPS: configs: Consolidate Loongson1 defconfigs
Unify loongson{1b,1c}_defconfig into a single loongson1_defconfig.

Enable the following options by default:
 - CONFIG_SERIAL_OF_PLATFORM
 - CONFIG_RTC_DRV_LOONGSON
 - CONFIG_LOONGSON1_APB_DMA
 - CONFIG_MTD_NAND_LOONGSON1
 - CONFIG_SND_LOONGSON1_AC97

Also disable unnecessary options.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Keguang Zhang
2d18f2343e MIPS: Unify Loongson1 PRID_REV
LS1B and LS1C share the same PRID value, so unify them
into a single definition: PRID_REV_LOONGSON1.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Keguang Zhang
85c4354076 MIPS: loongson32: Switch to generic core
The generic MIPS core is fully compatible with Loongson-1 SoCs,
so migrate Loongson-1 to it.

Main changes are:
 - Merge CPU_LOONGSON1B and CPU_LOONGSON1C into a unified CPU_LOONGSON32,
   as both are based on the GS232 core.
 - Consolidate LOONGSON1_LS1B and LOONGSON1_LS1C Kconfig options into
   MACH_LOONGSON32.
 - Enable MACH_GENERIC_CORE and remove the legacy custom implementation.
 - Remove all Loongson-1 platform devices and associated code,
   which are now obsolete due to Device Tree support.
 - Misc cleanup.

Partially based on earlier work by Jiaxun Yang.

Link: https://lore.kernel.org/all/20190411121915.8040-4-jiaxun.yang@flygoat.com/
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Keguang Zhang
ec7c2a107a MIPS: loongson: Add built-in DTB support
Since the current bootloader for Loongson-1 does not support FDT,
introduce CONFIG_BUILTIN_DTB_NAME to enable a built-in DTB.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Keguang Zhang
11741215e2 MIPS: dts: loongson: Add CQ-T300B board
Add a device tree for CQ-T300B board.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Keguang Zhang
cf4b382a92 MIPS: dts: loongson: Add Smartloong-1C board
Add a device tree for Smartloong-1C board, supporting CPU, clock, INTC,
UART, Ethernet, GPIO, USB host, RTC, watchdog, DMA, and NAND.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Keguang Zhang
9c60707729 MIPS: dts: loongson: Add LSGZ_1B_DEV board
Add a device tree for LSGZ_1B_DEV board.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:31 +02:00
Keguang Zhang
6428fcf27f MIPS: dts: loongson: Add LS1B-DEMO board
Add a device tree for LS1B-DEMO board, supporting CPU, clock, INTC,
UART, Ethernet, GPIO, USB host, RTC, watchdog, DMA, NAND, and AC97.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Keguang Zhang
cfbb794c62 dt-bindings: mips: loongson: Add LS1B-DEMO and CQ-T300B
Document two Loongson-1 boards:
 - loongson,ls1b-demo: a board based on Loongson-1B
 - loongson,cq-t300b: a board based on Loongson-1C

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Aleksander Jan Bajkowski
2b9706ce84 mips: lantiq: danube: rename stp node on EASY50712 reference board
This fixes the following warning:
arch/mips/boot/dts/lantiq/danube_easy50712.dtb: stp@e100bb0 (lantiq,gpio-stp-xway): $nodename:0: 'stp@e100bb0' does not match '^gpio@[0-9a-f]+$'
	from schema $id: http://devicetree.org/schemas/gpio/gpio-stp-xway.yaml#

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Aleksander Jan Bajkowski
b0d04fe6a6 mips: lantiq: xway: sysctrl: rename stp clock
Bindig requires a node name matching ‘^gpio@[0-9a-f]+$’. This patch
changes the clock name from “stp” to “gpio”.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
51f96bff04 MIPS: RB532: Replace deprecated strcpy() with memcpy() and strscpy()
strcpy() is deprecated; use memcpy() and strscpy() instead.

Add the local variable 'size_t len' to keep track of the string lengths
and prefer memcpy() over strscpy() when we use the string length to
advance the 'cp' pointer.

No functional changes intended.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
b7c1ee2dfe MIPS: Loongson64: Replace deprecated strcpy() with strscpy_pad()
strcpy() is deprecated; use strscpy_pad() instead.

strscpy_pad() already copies the source strings and zero-pads the tail
of the destination buffers, making the explicit initializations to zero
redundant. Remove them to ensure the buffers are only written to once.

No functional changes intended.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
6a1e6bf933 MIPS: generic: Replace deprecated strcpy() in ocelot_detect()
strcpy() is deprecated; use strscpy() instead.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
e34b690f58 MIPS: octeon: Replace deprecated strcpy() in octeon_model_get_string_buffer()
strcpy() is deprecated; use strscpy() instead.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
2c7c8cf656 MIPS: octeon: Replace memset(0) + deprecated strcpy() with strscpy_pad()
Replace memset(0) followed by the deprecated strcpy() with strscpy_pad()
to improve octeon_fdt_set_phy(). This avoids zeroing the memory before
copying the string and ensures the destination buffer is only written to
once, simplifying the code and improving efficiency.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
267ac0a800 MIPS: arc: Replace deprecated strcpy() with memcpy()
strcpy() is deprecated; use memcpy() instead.

Use pr_debug() instead of printk(KERN_DEBUG) to silence a checkpatch
warning.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
19b32dbba0 MIPS: txx9: Replace deprecated strcpy() with strscpy()
strcpy() is deprecated; use strscpy() instead.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
5861bb3ea2 MIPS: sni: Replace deprecated strcpy() in sni_console_setup()
strcpy() is deprecated; use strscpy() instead.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
5cd39d00c2 MIPS: sgi-ip32: Replace deprecated strcpy() in plat_mem_setup()
strcpy() is deprecated; use strscpy() instead.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:30 +02:00
Thorsten Blum
e5a6d4a23a MIPS: sgi-ip22: Replace deprecated strcpy() in plat_mem_setup()
strcpy() is deprecated; use strscpy() instead.

Link: https://github.com/KSPP/linux/issues/88
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00
Aleksander Jan Bajkowski
cb96fd880e mips: lantiq: danube: add model to EASY50712 dts
This fixes the following warning:
arch/mips/boot/dts/lantiq/danube_easy50712.dtb: / (lantiq,xway): 'model' is a required property
	from schema $id: http://devicetree.org/schemas/root-node.yaml#

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00
Aleksander Jan Bajkowski
d66949a187 mips: lantiq: danube: add missing device_type in pci node
This fixes the following warning:
arch/mips/boot/dts/lantiq/danube_easy50712.dtb: pci@e105400 (lantiq,pci-xway): 'device_type' is a required property
	from schema $id: http://devicetree.org/schemas/pci/pci-bus-common.yaml#

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00
Aleksander Jan Bajkowski
e8dee66c37 mips: lantiq: danube: add missing properties to cpu node
This fixes the following warnings:
arch/mips/boot/dts/lantiq/danube_easy50712.dtb: cpus: '#address-cells' is a required property
	from schema $id: http://devicetree.org/schemas/cpus.yaml#
arch/mips/boot/dts/lantiq/danube_easy50712.dtb: cpus: '#size-cells' is a required property
	from schema $id: http://devicetree.org/schemas/cpus.yaml#
arch/mips/boot/dts/lantiq/danube_easy50712.dtb: cpu@0 (mips,mips24Kc): 'reg' is a required property
	from schema $id: http://devicetree.org/schemas/mips/cpus.yaml#

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00
Aleksander Jan Bajkowski
1ea149fb5b dt-bindings: mips: cpu: Add MIPS 34Kc Core
Document MIPS 34Kc device tree bindings. It is used in the Realtek
RTL930x SoC.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00
Brian Masney
dba4380504 MIPS: Alchemy: convert from round_rate() to determine_rate()
The round_rate() clk ops is deprecated, so migrate this driver from
round_rate() to determine_rate() using the Coccinelle semantic patch
appended to the "under-the-cut" portion of the patch.

Note that prior to running Coccinelle, alchemy_clk_aux_roundr() was
renamed to alchemy_clk_aux_round_rate(). A few minor style cleanups
were also done by hand.

Signed-off-by: Brian Masney <bmasney@redhat.com>
Tested-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00
Thomas Huth
157f9533f9 mips: Replace __ASSEMBLY__ with __ASSEMBLER__ in the mips headers
While the GCC and Clang compilers already define __ASSEMBLER__
automatically when compiling assembler code, __ASSEMBLY__ is a macro
that only gets defined by the Makefiles in the kernel. Defining
such a macro was necessary in the early days of the kernel, since GCC
only started providing __ASSEMBLER__ since version 3.0 in 2000 (see
https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=f8f769ea4e69 ).
However, having two macros can be very confusing nowadays for the
developers when switching between userspace and kernelspace coding,
or when dealing with uapi headers that should use __ASSEMBLER__
instead. So let's now standardize on the __ASSEMBLER__ macro that is
provided by the compilers.

This is almost a completely mechanical patch (done with a simple
"sed -i" statement), with just one comment tweaked manually in
arch/mips/include/asm/cpu.h (that was missing some underscores).

Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00
Florian Fainelli
21050b589f MIPS: BMIPS: Properly define memory controller compatible
With the DT binding updated with 501be7cece ("dt-bindings:
memory-controller: Define fallback compatible") we need to define a
proper compatible string for the memory controller node(s).

Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2025-08-29 22:34:29 +02:00