Commit graph

1,398,251 commits

Author SHA1 Message Date
Jakub Kicinski
f09fc24dd9 selftests: drv-net: wait for carrier
On fast machines the tests run in quick succession so even
when tests clean up after themselves the carrier may need
some time to come back.

Specifically in NIPA when ping.py runs right after netpoll_basic.py
the first ping command fails.

Since the context manager callbacks are now common NetDrvEpEnv
gets an ip link up call as well.

Reviewed-by: Joe Damato <joe@dama.to>
Link: https://patch.msgid.link/20250812142054.750282-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:44:46 -07:00
Vladimir Oltean
df979273bd net: phy: mscc: report and configure in-band auto-negotiation for SGMII/QSGMII
The following Vitesse/Microsemi/Microchip PHYs, among those supported by
this driver, have the host interface configurable as SGMII or QSGMII:
- VSC8504
- VSC8514
- VSC8552
- VSC8562
- VSC8572
- VSC8574
- VSC8575
- VSC8582
- VSC8584

All these PHYs are documented to have bit 7 of "MAC SerDes PCS Control"
as "MAC SerDes ANEG enable".

Out of these, I could test the VSC8514 quad PHY in QSGMII. This works
both with the in-band autoneg on and off, on the NXP LS1028A-RDB and
T1040-RDB boards.

Notably, the bit is sticky (survives soft resets), so giving Linux the
tools to read and modify this settings makes it robust to changes made
to it by previous boot layers (U-Boot).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20250813074454.63224-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:42:32 -07:00
Vladimir Oltean
20e1b75b38 net: dsa: realtek: remove unnecessary file, dentry, inode declarations
These are present since commit d8652956cf ("net: dsa: realtek-smi: Add
Realtek SMI driver") and never needed. Apparently the driver was not
cleaned up sufficiently for submission.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250813181023.808528-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:39:44 -07:00
Suraj Gupta
fd980bf6e9 net: xilinx: axienet: Fix RX skb ring management in DMAengine mode
Submit multiple descriptors in axienet_rx_cb() to fill Rx skb ring. This
ensures the ring "catches up" on previously missed allocations.

Increment Rx skb ring head pointer after BD is successfully allocated.
Previously, head pointer was incremented before verifying if descriptor is
successfully allocated and has valid entries, which could lead to ring
state inconsistency if descriptor setup failed.

These changes improve reliability by maintaining adequate descriptor
availability and ensuring proper ring buffer state management.

Fixes: 6a91b846af ("net: axienet: Introduce dmaengine support")
Signed-off-by: Suraj Gupta <suraj.gupta2@amd.com>
Link: https://patch.msgid.link/20250813135559.1555652-1-suraj.gupta2@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:38:44 -07:00
Yue Haibing
eeea768863 net/sched: Use TC_RTAB_SIZE instead of magic number
Replace magic number with TC_RTAB_SIZE to make it more informative.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://patch.msgid.link/20250813125526.853895-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:37:48 -07:00
Alexandra Winter
1548549e17 MAINTAINERS: update s390/net
Remove Thorsten Winkler as maintainer and add Aswin Karuvally as reviewer.

Thank you Thorsten for your support, welcome Aswin!

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Acked-by: Thorsten Winkler <twinkler@linux.ibm.com>
Acked-by: Aswin Karuvally <aswin@linux.ibm.com>
Link: https://patch.msgid.link/20250813111633.241111-1-wintera@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:36:15 -07:00
Liao Yuanhong
4b6dc4c891 ptp: ptp_clockmatrix: Remove redundant semicolons
Remove unnecessary semicolons.

Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com>
Link: https://patch.msgid.link/20250813095024.559085-1-liaoyuanhong@vivo.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:35:49 -07:00
Jakub Kicinski
9b96c60d70 Merge branch 'devlink-port-attr-cleanup'
Parav Pandit says:

====================
devlink port attr cleanup

patch-1 removes the return 0 check at several places and simplfies
patch-2 constifies the attributes and moves the checks early
caller
====================

Link: https://patch.msgid.link/20250813094417.7269-1-parav@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:35:23 -07:00
Parav Pandit
41a6e8ab18 devlink/port: Check attributes early and constify
Constify the devlink port attributes to indicate they are read only
and does not depend on anything else. Therefore, validate it early
before setting in the devlink port.

Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Parav Pandit <parav@nvidia.com>
Link: https://patch.msgid.link/20250813094417.7269-3-parav@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:35:20 -07:00
Parav Pandit
0ebc0bcd0a devlink/port: Simplify return checks
Drop always returning 0 from the helper routine and simplify
its callers.

Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Parav Pandit <parav@nvidia.com>
Link: https://patch.msgid.link/20250813094417.7269-2-parav@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:35:20 -07:00
Dan Carpenter
c6f68f6941 nfc: pn533: Delete an unnecessary check
The "rc" variable is set like this:

	if (IS_ERR(resp)) {
		rc = PTR_ERR(resp);

We know that "rc" is negative so there is no need to check.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/aJwn2ox5g9WsD2Vx@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:33:20 -07:00
Markus Stockhausen
34167f1a02 net: phy: realtek: convert RTL8226-CG to c45 only
Short: Convert the RTL8226-CG to c45 so it can be used in its
Realtek based ecosystems.

Long: The RTL8226-CG can be mainly found on devices of the
Realtek Otto switch platform. Devices like the Zyxel XGS1210-12
are based on it. These implement a hardware based phy polling
in the background to update SoC status registers.

The hardware provides 4 smi busses where phys are attached to.
For each bus one can decide if it is polled in c45 or c22 mode.
See https://svanheule.net/realtek/longan/register/smi_glb_ctrl
With this setting the register access will be limited by the
hardware. This is very complex (including caching and special
c45-over-c22 handling). But basically it boils down to "enable
protocol x and SoC will disable register access via protocol y".

Mainline already gained support for the rtl9300 mdio driver
in commit 24e31e4747 ("net: mdio: Add RTL9300 MDIO driver").

It covers the basic features, but a lot effort is still needed
to understand hardware properly. So it runs a simple setup by
selecting the proper bus mode during startup.

	/* Put the interfaces into C45 mode if required */
	glb_ctrl_mask = GENMASK(19, 16);
	for (i = 0; i < MAX_SMI_BUSSES; i++)
		if (priv->smi_bus_is_c45[i])
			glb_ctrl_val |= GLB_CTRL_INTF_SEL(i);
	...
	err = regmap_update_bits(regmap, SMI_GLB_CTRL,
				 glb_ctrl_mask, glb_ctrl_val);

To avoid complex coding later on, it limits access by only
providing either c22 or c45:

	bus->name = "Realtek Switch MDIO Bus";
	if (priv->smi_bus_is_c45[mdio_bus]) {
		bus->read_c45 = rtl9300_mdio_read_c45;
		bus->write_c45 =  rtl9300_mdio_write_c45;
	} else {
		bus->read = rtl9300_mdio_read_c22;
		bus->write = rtl9300_mdio_write_c22;
	}

Because of these limitations the existing RTL8226 phy driver
is not working at all on Realtek switches. Convert the driver
to c45-only.

Luckily the RTL8226 seems to support proper MDIO_PMA_EXTABLE
flags. So standard function genphy_c45_pma_read_abilities() can
call genphy_c45_pma_read_ext_abilities() and 10/100/1000 is
populated right. Thus conversion is straight forward.

Outputs before - REMARK: For this a "hacked" bus was used that
toggles the mode for each c22/c45 access. But that is slow and
produces unstable data in the SoC status registers).

Settings for lan9:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full
        Advertised pause frame use: Symmetric Receive-only
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Speed: Unknown!
        Duplex: Unknown! (255)
        Port: Twisted Pair
        PHYAD: 24
        Transceiver: external
        Auto-negotiation: on
        MDI-X: Unknown
        Supports Wake-on: d
        Wake-on: d
        Link detected: no

Outputs with this commit:

Settings for lan9:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
                                2500baseT/Full
        Advertised pause frame use: Symmetric Receive-only
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Speed: Unknown!
        Duplex: Unknown! (255)
        Port: Twisted Pair
        PHYAD: 24
        Transceiver: external
        Auto-negotiation: on
        MDI-X: Unknown
        Supports Wake-on: d
        Wake-on: d
        Link detected: no

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://patch.msgid.link/20250813054407.1108285-1-markus.stockhausen@gmx.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:32:54 -07:00
Jijie Shao
355b82c54c net: phy: motorcomm: Add support for PHY LEDs on YT8521
Add minimal LED controller driver supporting
the most common uses with the 'netdev' trigger.

Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250813124542.3450447-1-shaojijie@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:32:01 -07:00
Jakub Kicinski
c4f72d3747 [GIT PULL for v6.17-rc2] docs fixes
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAmia2qMACgkQCF8+vY7k
 4RUjhw//e5IK78x5odQshGhOuCBKAYsaqz7ibdz/T4CqCgxzC3FJCCNcrFg3bS8K
 2vX3az0OAHOyCJxwOVq0ULF90aZaCMZkNxeNWTQynjvnt5jckX7BYIi+3Ol1pXvp
 741jmaAseQsnczQ/xBK2fH9JA2n0nBGySofbfEbEl5eOErWT1m4+//VfMObHGU8f
 W+R0Te5yPEewiHRWU9C4vtXDKeJvweI4goNiFWGWauaWcSjxJcdHj90VyKLDE9D7
 porbSriKVXSI+PO+3+PPK6siWwoyc4YBw8Xhhmo5trpSu6X9I34lQjEVImofC0M+
 6ZGUZXI3n9a/saLZj5QJ7O5pziQ57XbfDUSXjKepZVx8hFsX68dLksrzgI4Y+TLg
 GxClJPfBy+lHRNaAbNaAygKVFAnOCpaGNGxFq7+Xru6BK6DbfE8NDvaiZ25WQKgg
 Zmo1XZMq2E8UrexwGnPCigqInPSXjWxwtaXp/qh3R+2Y/pkgIXFt5sNyb0IfuTyf
 du9blwJ9Jx/95u1zmXnbbYziXk3UswVxi0fsy3gey+nhQtusf8qqK3KJ84msNHwY
 GWbe5KBjYHpEqjq97BxRfbokraMNVzvJ3ot3BFcRyNcZLXXnt5IhupjaekgmRzlZ
 4Gvd7tF5P4er6nOF1SY2ZRohqdVDbCfp9OvmvAGKebegrhAJM6w=
 =vNLV
 -----END PGP SIGNATURE-----

Merge tag 'docs/v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-docs

Mauro Carvalho Chehab says:

====================
add a generic yaml parser integrated with Netlink specs generation

- An YAML parser Sphinx plugin, integrated with Netlink YAML doc
  parser.

The patch content is identical to my v10 submission:
https://lore.kernel.org/cover.1753718185.git.mchehab+huawei@kernel.org

* tag 'docs/v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-docs:
  sphinx: parser_yaml.py: fix line numbers information
  docs: parser_yaml.py: fix backward compatibility with old docutils
  docs: parser_yaml.py: add support for line numbers from the parser
  tools: netlink_yml_parser.py: add line numbers to parsed data
  MAINTAINERS: add netlink_yml_parser.py to linux-doc
  docs: netlink: remove obsolete .gitignore from unused directory
  tools: ynl_gen_rst.py: drop support for generating index files
  docs: uapi: netlink: update netlink specs link
  docs: use parser_yaml extension to handle Netlink specs
  docs: sphinx: add a parser for yaml files for Netlink specs
  tools: ynl_gen_rst.py: cleanup coding style
  docs: netlink: index.rst: add a netlink index file
  tools: ynl_gen_rst.py: Split library from command line tool
  docs: netlink: netlink-raw.rst: use :ref: instead of :doc:
====================

Link: https://patch.msgid.link/20250812113329.356c93c2@foz.lan
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 17:26:38 -07:00
Dave Airlie
00062ea01d - Some more xe_migrate_access_memory fixes (Auld)
- Defer buffer object shrinker write-backs and GPU waits (Thomas)
 - HWMON fix for clamping limits (Karthik)
 - SRIOV-PF: Set VF LMEM BAR size (Michal)
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCgAdFiEEbSBwaO7dZQkcLOKj+mJfZA7rE8oFAmieCm0ACgkQ+mJfZA7r
 E8of7wf/U55dzKcOu9i4mTYZIGd3cqfbWRuDM5FSJpuXang7cRRZDr6RzSes4XKH
 ary751s97gUIzfiUCzNXCY+1ACQqN2qNUzJsrcAYVC5ertvrgmRLtTbczLSWj4Ey
 vh/ctCns4bxb955pTyi7xg8mAPBUN1OHckdJrrcQyatOaEVeB88N5Z67bGJ66s89
 sb5Nbnd0MImlX90/Ojd4TvfXfFkUwP0JII3+4XeTktNPw3ECMszEHHNV8Uk4LH+d
 8o0qG2f/WMul/c8eVVdcnCpYf42ZMQWithwh1f0eld0tDxQXgrFOg1HPV7cVGOEI
 y/znB2zWiluJ0/21XYyar3CazD38jA==
 =m/qf
 -----END PGP SIGNATURE-----

Merge tag 'drm-xe-fixes-2025-08-14' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes

- Some more xe_migrate_access_memory fixes (Auld)
- Defer buffer object shrinker write-backs and GPU waits (Thomas)
- HWMON fix for clamping limits (Karthik)
- SRIOV-PF: Set VF LMEM BAR size (Michal)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/aJ4MIZQurSo0uNxn@intel.com
2025-08-15 09:50:26 +10:00
Dave Airlie
4699c04b68 Merge tag 'drm-intel-fixes-2025-08-13' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-fixes
- Fix the implementation of wa_18038517565 [fbc] (Vinod Govindapillai)
- Do not trigger Frame Change events from frontbuffer flush [psr] (Jouni Högander)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Tvrtko Ursulin <tursulin@igalia.com>
Link: https://lore.kernel.org/r/aJ0HAh06VHWVdv63@linux
2025-08-15 09:05:05 +10:00
Dave Ertman
28f073b383 ice: Implement support for SRIOV VFs across Active/Active bonds
This patch implements the software flows to handle SRIOV VF
communication across an Active/Active link aggregate.  The same
restrictions apply as are in place for the support of Active/Backup
bonds.

- the two interfaces must be on the same NIC
- the FW LLDP engine needs to be disabled
- the DDP package that supports VF LAG must be loaded on device
- the two interfaces must have the same QoS config
- only the first interface added to the bond will have VF support
- the interface with VFs must be in switchdev mode

With the additional requirement of
- the version of the FW on the NIC needs to have VF Active/Active support
This requirement is indicated in the capabilities struct associated
with the NVM loaded on the NIC.

The balancing of traffic between the two interfaces is done on a queue
basis.  Taking the queues allocated to all of the VFs as a whole, one
half of them will be distributed to each interface.  When a link goes
down, then the queues allocated to the down interface will migrate to
the active port.  When the down port comes back up, then the same
queues as were originally assigned there will be moved back.

Co-developed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2025-08-14 15:50:47 -07:00
Brigham Campbell
5fbc0dbb92 drm/panel: novatek-nt35560: Clean up driver
Update driver to use the "multi" variants of MIPI functions which
facilitate improved error handling and cleaner driver code.

Remove information from a comment which was made obsolete by commit
994ea402c7 ("drm/panel: Rename Sony ACX424 to Novatek NT35560"), which
determined that this driver supports the Novatek NT35560 panel
controller.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Brigham Campbell <me@brighamcampbell.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20250731032343.1258366-4-me@brighamcampbell.com
2025-08-14 15:44:47 -07:00
Brigham Campbell
ffc23a204a drm: Add MIPI read_multi func and two write macros
Create mipi_dsi_dcs_read_multi(), which accepts a mipi_dsi_multi_context
struct for improved error handling and cleaner panel driver code.

Create mipi_dsi_dcs_write_var_seq_multi() and
mipi_dsi_generic_write_var_seq_multi() macros which allow MIPI panel
drivers to write non-constant data to display controllers.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Brigham Campbell <me@brighamcampbell.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20250731032343.1258366-3-me@brighamcampbell.com
2025-08-14 15:42:26 -07:00
Paul E. McKenney
51c285baa3 rcutorture: Delay forward-progress testing until boot completes
Forward-progress testing can hog CPUs, which is not a great thing to do
before boot has completed.  This commit therefore makes the CPU-hotplug
operations hold off until boot has completed.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:26:30 -07:00
Paul E. McKenney
6e9c48b3e3 torture: Delay CPU-hotplug operations until boot completes
CPU-hotplug operations invoke stop-machine, which can hog CPUs, which is
not a great thing to do before boot has completed.  This commit therefore
makes the CPU-hotplug operations hold off until boot has completed.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:26:30 -07:00
Paul E. McKenney
9a316fe3ad rcutorture: Delay rcutorture readers and writers until boot completes
The rcutorture writers and (especially) readers are the biggest CPU
hogs of the bunch, so this commit therefore makes them wait until boot
has completed.

This makes the current setting of the boot_ended local variable dead code,
so while in the area, this commit removes that as well.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:26:30 -07:00
Paul E. McKenney
1b0f583843 rcutorture: Suppress "Writer stall state" reports during boot
When rcutorture is running on only the one boot-time CPU while that CPU
is busy invoking initcall() functions, the added load is quite likely to
unduly delay the RCU grace-period kthread, rcutorture readers, and much
else besides.  This can result in rcu_torture_stats_print() reporting
rcutorture writer stalls, which are not really a bug in that environment.
After all, one CPU can only do so much.

This commit therefore suppresses rcutorture writer stalls while the
kernel is booting, that is, while rcu_inkernel_boot_has_ended() continues
returning false.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:26:30 -07:00
Paul E. McKenney
b930ff84f3 torture: Announce kernel boot status at torture-test startup
Sometimes a given system takes surprisingly long to boot, for example,
in one recent case, 70 seconds instead of three seconds.  It would
be good to fix these slow-boot issues, but it would also be good for
the torture tests to announce that the system was still booting at the
start of the test.  Especially for tests that have a greater probability
of false positives when run in the single-CPU boot-time environment.
Yes, those tests should defend themselves, but we should also make this
situation easier to diagnose.

This commit therefore causes torture_print_module_parms() to print
"still booting" at the end of its printk() that dumps out the values of
its module parameters.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:26:30 -07:00
Paul E. McKenney
bd89367e05 torture: Add --do-normal parameter to torture.sh help text
The --do-normal parameter was missing from the torture.sh script's help
text, so this commit adds it.  Hopefully better late than never!

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:26:30 -07:00
Paul E. McKenney
e95f6ccdbc rcutorture: Fix jitter.sh spin time
An embarrassing syntax error in jitter.sh makes for fixed spin time.
This commit therefore makes it be variable, as intended, albeit with
very coarse-grained adjustment.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:26:30 -07:00
Paul E. McKenney
cacadb6303 srcu: Add guards for notrace variants of SRCU-fast readers
This adds the usual scoped_guard(srcu_fast_notrace, &my_srcu) and
guard(srcu_fast_notrace)(&my_srcu).

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: <bpf@vger.kernel.org>
2025-08-14 15:25:49 -07:00
Paul E. McKenney
7e2a2d060d srcu: Add srcu_read_lock_fast_notrace() and srcu_read_unlock_fast_notrace()
This commit adds no-trace variants of the srcu_read_lock_fast() and
srcu_read_unlock_fast() functions for tracing use.

[ paulmck: Apply notrace feedback from Joel Fernandes, Steven Rostedt, and Mathieu Desnoyers. ]
[ paulmck: Apply excess-notrace feedback from Boqun Feng. ]

Link: https://lore.kernel.org/all/20250721162433.10454-1-paulmck@kernel.org
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: <bpf@vger.kernel.org>
2025-08-14 15:25:48 -07:00
Paul E. McKenney
f39494089a srcu: Move rcu_is_watching() checks to srcu_read_{,un}lock_fast()
The rcu_is_watching() warnings are currently in the SRCU-tree
implementations of __srcu_read_lock_fast() and __srcu_read_unlock_fast().
However, this makes it difficult to create _notrace variants of
srcu_read_lock_fast() and srcu_read_unlock_fast().  This commit therefore
moves these checks to srcu_read_lock_fast(), srcu_read_unlock_fast(),
srcu_down_read_fast(), and srcu_up_read_fast().

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: <bpf@vger.kernel.org>
2025-08-14 15:25:48 -07:00
Zqiang
42d590d100 rcu: Remove local_irq_save/restore() in rcu_preempt_deferred_qs_handler()
The per-CPU rcu_data structure's ->defer_qs_iw field is initialized
by IRQ_WORK_INIT_HARD(), which means that the subsequent invocation of
rcu_preempt_deferred_qs_handler() will always be executed with interrupts
disabled.  This commit therefore removes the local_irq_save/restore()
operations from rcu_preempt_deferred_qs_handler() and adds a call to
lockdep_assert_irqs_disabled() in order to enable lockdep to diagnose
mistaken invocations of this function from interrupts-enabled code.

Signed-off-by: Zqiang <qiang.zhang@linux.dev>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-08-14 15:25:15 -07:00
Raviteja Laggyshetty
7fdc1d1b02 dt-bindings: interconnect: document the RPMh Network-On-Chip interconnect in Glymur SoC
Document the RPMh Network-On-Chip Interconnect in Glymur platform.

Co-developed-by: Odelu Kukatla <odelu.kukatla@oss.qualcomm.com>
Signed-off-by: Odelu Kukatla <odelu.kukatla@oss.qualcomm.com>
Reviewed-by: "Rob Herring (Arm)" <robh@kernel.org>
Signed-off-by: Raviteja Laggyshetty <raviteja.laggyshetty@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250814-glymur-icc-v2-1-596cca6b6015@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
2025-08-15 00:30:47 +03:00
Niklas Schnelle
704e5dd1c0 powerpc/eeh: Use result of error_detected() in uevent
Ever since uevent support was added for AER and EEH with commit
856e1eb9bd ("PCI/AER: Add uevents in AER and EEH error/resume"), it
reported PCI_ERS_RESULT_NONE as uevent when recovery begins.

Commit 7b42d97e99 ("PCI/ERR: Always report current recovery status for
udev") subsequently amended AER to report the actual return value of
error_detected().

Make the same change to EEH to align it with AER and s390.

Suggested-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/linux-pci/aIp6LiKJor9KLVpv@wunner.de/
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Acked-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Link: https://patch.msgid.link/20250807-add_err_uevents-v5-3-adf85b0620b0@linux.ibm.com
2025-08-14 15:58:11 -05:00
Niklas Schnelle
dab32f2576 s390/pci: Use pci_uevent_ers() in PCI recovery
Issue uevents on s390 during PCI recovery using pci_uevent_ers() as done by
EEH and AER PCIe recovery routines.

Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Link: https://patch.msgid.link/20250807-add_err_uevents-v5-2-adf85b0620b0@linux.ibm.com
2025-08-14 15:56:28 -05:00
Niklas Schnelle
bbf7d0468d PCI/AER: Fix missing uevent on recovery when a reset is requested
Since commit 7b42d97e99 ("PCI/ERR: Always report current recovery
status for udev") AER uses the result of error_detected() as parameter
to pci_uevent_ers(). As pci_uevent_ers() however does not handle
PCI_ERS_RESULT_NEED_RESET this results in a missing uevent for the
beginning of recovery if drivers request a reset. Fix this by treating
PCI_ERS_RESULT_NEED_RESET as beginning recovery.

Fixes: 7b42d97e99 ("PCI/ERR: Always report current recovery status for udev")
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20250807-add_err_uevents-v5-1-adf85b0620b0@linux.ibm.com
2025-08-14 15:55:58 -05:00
Chen Ni
539b06e9e0
clk: clk-axi-clkgen: remove unneeded semicolon
Remove unnecessary semicolons reported by Coccinelle/coccicheck and the
semantic patch at scripts/coccinelle/misc/semicolon.cocci.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://lore.kernel.org/r/20250729022735.1437560-1-nichen@iscas.ac.cn
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2025-08-14 13:27:00 -07:00
Liao Yuanhong
a1e1c10878
clk: tegra: Remove redundant semicolons
Remove unnecessary semicolons.

Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com>
Link: https://lore.kernel.org/r/20250813094003.552308-1-liaoyuanhong@vivo.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2025-08-14 13:25:25 -07:00
Hans Zhang
8ffc9f234f PCI: dwc: Implement capability search using PCI core APIs
The PCI core now provides generic PCI_FIND_NEXT_CAP() and
PCI_FIND_NEXT_EXT_CAP() macros to search for PCI capabilities, using
config accessors we supply.

Use them in the DWC driver to implement dw_pcie_find_capability() and
dw_pcie_find_ext_capability() instead of duplicating the algorithm.

Signed-off-by: Hans Zhang <18255117159@163.com>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20250813144529.303548-5-18255117159@163.com
2025-08-14 15:20:54 -05:00
Alexander Aring
8e40210788 dlm: check for undefined release_option values
Checking on all undefined release_option values to return -EINVAL in
case a user is providing them to dlm_release_lockspace().

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
2025-08-14 15:16:05 -05:00
Alexander Aring
8d90041a0d dlm: handle release_option as unsigned
Future patches will introduce a invalid argument check for undefined
values. All values for release_option are positive integer values to not
check on negative values as well we just change the parameter to
unsigned int.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
2025-08-14 15:16:05 -05:00
Alexander Aring
a8abcff174 dlm: move to rinfo for all middle conversion cases
Since commit f74dacb4c8 ("dlm: fix recovery of middle conversions")
we introduced additional debugging information if we hit the middle
conversion by using log_limit(). The DLM log_limit() functionality
requires a DLM debug option being enabled. As this case is so rarely and
excempt any potential introduced new issue with recovery we switching it
to log_rinfo() ad this is ratelimited under normal DLM loglevel.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
2025-08-14 15:16:04 -05:00
Alexander Aring
452d90def2 dlm: handle invalid lockspace member remove
Since commit de7b4869b4 ("dlm: add new configfs entry release_recover
for lockspace members") we are moving lockspace members into a gone list
before removing them to get additional removing attributes from
configfs. There is still a very unlikely possibility when
find_config_node() returns NULL, then for some reason the node wasn't
marked as gone but it was removed. We will just handle this case and drop
an error to observe if this case can ever happen.

Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/gfs2/aJ2Ssuh8xlsTutrA@stanley.mountain/T/#u
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
2025-08-14 15:16:04 -05:00
Hans Zhang
4d909bf1a5 PCI: Refactor extended capability search into PCI_FIND_NEXT_EXT_CAP()
Move the extended Capability search logic into a PCI_FIND_NEXT_EXT_CAP()
macro that accepts a config space accessor function as an argument. This
enables controller drivers to perform Capability discovery using their
early access mechanisms prior to full device initialization while sharing
the Capability search code.

Convert the existing PCI core extended Capability search implementation to
use PCI_FIND_NEXT_EXT_CAP().

Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://patch.msgid.link/20250813144529.303548-4-18255117159@163.com
2025-08-14 15:03:45 -05:00
Hans Zhang
3c02084d8f PCI: Refactor capability search into PCI_FIND_NEXT_CAP()
The PCI Capability search functionality is duplicated across the PCI core
and several controller drivers. The core's current implementation requires
fully initialized PCI device and bus structures, which prevents controller
drivers from using it during early initialization phases before these
structures are available.

Move the Capability search logic into a PCI_FIND_NEXT_CAP() macro that
accepts a config space accessor function as an argument. This enables
controller drivers to perform Capability discovery using their early
access mechanisms prior to full device initialization while sharing the
Capability search code.

Convert the existing PCI core Capability search implementation to use
PCI_FIND_NEXT_CAP().  Controller drivers can later use this with their
early access mechanisms while maintaining the existing protection against
infinite loops through preserved TTL checks.

Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://patch.msgid.link/20250813144529.303548-3-18255117159@163.com
2025-08-14 15:03:40 -05:00
Hans Zhang
37d1ade896 PCI: Clean up __pci_find_next_cap_ttl() readability
Refactor the __pci_find_next_cap_ttl() to improve code clarity:

  - Replace magic number 0x40 with PCI_STD_HEADER_SIZEOF.
  - Use ALIGN_DOWN() for position alignment instead of manual bitmask.
  - Extract PCI capability fields via FIELD_GET() with standardized masks.
  - Add necessary headers (linux/align.h).

No functional changes intended.

Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20250813144529.303548-2-18255117159@163.com
2025-08-14 15:03:34 -05:00
Arnd Bergmann
c123519bff
clk: npcm: select CONFIG_AUXILIARY_BUS
There are very rare randconfig builds that turn on this driver but
don't already select CONFIG_AUXILIARY_BUS from another driver, and
this results in a build failure:

arm-linux-gnueabi-ld: drivers/clk/clk-npcm8xx.o: in function `npcm8xx_clock_driver_init':
clk-npcm8xx.c:(.init.text+0x18): undefined reference to `__auxiliary_driver_register'

Select the bus here, as all other clk drivers using it do.

Fixes: e0b255df02 ("clk: npcm8xx: add clock controller")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250807072241.4190376-1-arnd@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2025-08-14 12:51:11 -07:00
Wolfram Sang
4239b174c2
clk: remove unneeded 'fast_io' parameter in regmap_config
When using MMIO with regmap, fast_io is implied. No need to set it
again.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250813161517.4746-3-wsa+renesas@sang-engineering.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2025-08-14 12:50:35 -07:00
Jakub Kicinski
f24775c325 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.17-rc2).

No conflicts.

Adjacent changes:

drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
  d7a276a576 ("net: stmmac: rk: convert to suspend()/resume() methods")
  de1e963ad0 ("net: stmmac: rk: put the PHY clock on remove")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-08-14 12:13:00 -07:00
Rob Herring (Arm)
01ce6aa56c dt-bindings: interrupt-controller: Convert hisilicon,mbigen-v2 to DT schema
Convert the HiSilicon MBIGEN binding to DT schema format. It's a
straight-forward conversion.

Link: https://lore.kernel.org/r/20250812203327.730393-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-08-14 13:24:37 -05:00
Rob Herring (Arm)
5de28cf4ae dt-bindings: arm/cpus: Add missing Applied Micro CPU compatibles
"apm,potenza" and "apm,strega" CPU compatibles have been in use for some
time.

Link: https://lore.kernel.org/r/20250812181428.69490-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-08-14 13:24:37 -05:00
Thomas Weißschuh
3f0ff4cc6f
kbuild: respect CONFIG_WERROR for userprogs
The userprogs compiler and linker do not share the regular compiler flags.

Make sure they also fail on warnings with CONFIG_WERROR and W=e.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Link: https://lore.kernel.org/r/20250814-kbuild-werror-v2-5-c01e596309d2@linutronix.de
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
2025-08-14 11:21:21 -07:00