wireguard-linux/drivers/bus/fsl-mc, branch stable

bus: fsl-mc: drop unused assignment of acpi_device_id::driver_data

2026-08-07T04:54:23Z

This module sets the acpi_device_id::driver_data to 0 but the field is not actually used within the module, we can just drop it from the table. While we are at it - use a named initializer for the acpi_device_id::id field as well to make the code more readable. Signed-off-by: Pawel Zalewski (The Capable Hub) Reviewed-by: Ioana Ciornei Link: https://lore.kernel.org/r/20260728-acpi-bus-v1-1-12ff25fdea9b@thegoodpenguin.co.uk Signed-off-by: Christophe Leroy (CS GROUP)

bus: fsl-mc: Remove redundant dev_err()

2026-08-07T04:54:22Z

Since commit 55b48e23f5c4 ("genirq/devres: Add error handling in devm_request_*_irq()"), devm_request_threaded_irq() automatically logs detailed error messages on failure. Remove the now-redundant driver-specific dev_err() calls. Signed-off-by: Pan Chuang Reviewed-by: Ioana Ciornei Link: https://lore.kernel.org/r/20260710110930.462109-2-panchuang@vivo.com Signed-off-by: Christophe Leroy (CS GROUP)

drivers/bus/fsl-mc: Use strscpy() to copy strings into arrays

2026-08-03T12:58:58Z

Replacing strcpy() with strscpy() ensures than overflow of the target buffer cannot happen. Signed-off-by: David Laight Reviewed-by: Ioana Ciornei Link: https://lore.kernel.org/r/20260608095500.2567-1-david.laight.linux@gmail.com Signed-off-by: Christophe Leroy (CS GROUP)

Merge tag 'soc_fsl-7.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/chleroy/linux into soc/drivers

2026-05-18T14:59:23Z

FSL SOC Changes for 7.1 Freescale QUICC Engine: - Add missing cleanup on device removal and switch to irq_domain_create_linear() in interrupt controller for IO Ports - Panic on ioremap() failure in qe_reset() Freescale Management Complex: - Move fsl-mc over to device MSI infrastructure - Wait for the MC firmware to complete its boot Freescale Hypervisor: - Fix header kernel-doc warnings * tag 'soc_fsl-7.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/chleroy/linux: bus: fsl-mc: wait for the MC firmware to complete its boot soc: fsl: qe: panic on ioremap() failure in qe_reset() soc: fsl: qe_ports_ic: switch to irq_domain_create_linear() soc: fsl: qe_ports_ic: Add missing cleanup on device removal virt: fsl_hypervisor: fix header kernel-doc warnings platform-msi: Remove stale comment fsl-mc: Remove legacy MSI implementation fsl-mc: Switch over to per-device platform MSI irqchip/gic-v3-its: Add fsl_mc device plumbing to the msi-parent handling fsl-mc: Add minimal infrastructure to use platform MSI fsl-mc: Remove MSI domain propagation to sub-devices Signed-off-by: Arnd Bergmann

bus: fsl-mc: use generic driver_override infrastructure

2026-04-04T18:41:25Z

When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1] Tested-by: Ioana Ciornei Acked-by: Ioana Ciornei Acked-by: Christophe Leroy (CS GROUP) Link: https://lore.kernel.org/driver-core/DGRGTIRHA62X.3RY09D9SOK77P@kernel.org/ [1] Reported-by: Gui-Dong Han Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220789 Fixes: 1f86a00c1159 ("bus/fsl-mc: add support for 'driver_override' in the mc-bus") Link: https://patch.msgid.link/20260324005919.2408620-3-dakr@kernel.org Signed-off-by: Danilo Krummrich

bus: fsl-mc: wait for the MC firmware to complete its boot

2026-04-04T16:54:05Z

There are use cases in which the Management Complex firmware boot process is started by the bootloader which does not wait for the boot to complete. This is mainly done in order to reduce the overall boot time of a DPAA2 based SoC. In this kind of circumstance, the fsl-mc bus driver needs to make sure that the MC firmware boot process is finished before proceeding to the usual operations such as interrogating the firmware to gather all existent DPAA2 objects, creating the fsl-mc devices on the bus etc. Add this kind of check early in the boot process of the fsl-mc bus and defer the probe in case the firmware is still in its boot process. Signed-off-by: Ioana Ciornei Link: https://lore.kernel.org/r/20260401144508.3062019-1-ioana.ciornei@nxp.com Signed-off-by: Christophe Leroy (CS GROUP)

fsl-mc: Remove legacy MSI implementation

2026-02-26T09:48:18Z

Get rid of most of the fsl_mc MSI infrastructure, which is now replaced by common code. Reviewed-by: Ioana Ciornei Tested-by: Ioana Ciornei # LX2160ARDB, LS2088ARDB Tested-by: Sascha Bischoff Signed-off-by: Marc Zyngier Acked-by: Thomas Gleixner Link: https://lore.kernel.org/r/20260224100936.3752303-6-maz@kernel.org Signed-off-by: Christophe Leroy (CS GROUP)

fsl-mc: Switch over to per-device platform MSI

2026-02-26T09:48:18Z

Obtain the msi-parent irqdomain instead of the fsl_mc domain, which magically engages the per-device infrastructure. Additionally, simplify the overly complicated error handling. Reviewed-by: Ioana Ciornei Tested-by: Ioana Ciornei # LX2160ARDB, LS2088ARDB Tested-by: Sascha Bischoff Signed-off-by: Marc Zyngier Acked-by: Thomas Gleixner Link: https://lore.kernel.org/r/20260224100936.3752303-5-maz@kernel.org Signed-off-by: Christophe Leroy (CS GROUP)

fsl-mc: Add minimal infrastructure to use platform MSI

2026-02-26T09:48:18Z

Add the tiny bit of infrastructure required to use platform MSI instead of the current hack. This means providing a write_msi_msg callback, as well as irq domain and devid retrieval helpers. Reviewed-by: Ioana Ciornei Tested-by: Ioana Ciornei # LX2160ARDB, LS2088ARDB Tested-by: Sascha Bischoff Signed-off-by: Marc Zyngier Acked-by: Thomas Gleixner Link: https://lore.kernel.org/r/20260224100936.3752303-3-maz@kernel.org Signed-off-by: Christophe Leroy (CS GROUP)

fsl-mc: Remove MSI domain propagation to sub-devices

2026-02-26T09:48:18Z

Only the root device generates MSIs (it is the only one talking to the ITS), so propagating the domain is pretty pointless. Remove it. Reviewed-by: Ioana Ciornei Tested-by: Ioana Ciornei # LX2160ARDB, LS2088ARDB Tested-by: Sascha Bischoff Signed-off-by: Marc Zyngier Acked-by: Thomas Gleixner Link: https://lore.kernel.org/r/20260224100936.3752303-2-maz@kernel.org Signed-off-by: Christophe Leroy (CS GROUP)