kernel/linux.git/drivers/usb/host, branch v7.2-rc1

Merge tag 'usb-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2026-06-22T19:09:47+00:00

Pull USB and Thunderbolt driver updates from Greg KH: "Here is the big set of USB and Thunderbolt driver changes for 7.2-rc1. Lots of little stuff in here, major highlights include: - USB4STREAM support for Thunderbolt devices. A new way to send "raw" data very quickly over a USB4 connection to another system directly - Other thunderbolt updates and changes to make the stream code work - xhci driver updates and additions - typec driver updates and additions - usb gadget driver updates and fixes for reported issues - zh_CN documentation translation of the USB documentation - usb-serial driver updates - dts cleanups for some USB platforms - other minor USB driver updates and tweaks All of these have been in linux-next for over a week with no reported issues, most of them for many many weeks" * tag 'usb-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (131 commits) usb: ucsi: huawei_gaokun: support mode switching thunderbolt: debugfs: Fix sideband write size check thunderbolt: debugfs: Fix margining error counter buffer leak usb: host: xhci-rcar: Split R-Car Gen2 and Gen3 .plat_start() handling usb: host: xhci-rcar: Remove SET_XHCI_PLAT_PRIV_FOR_RCAR() macro usb: xhci: allocate internal DCBAA mirror dynamically usb: xhci: allocate DCBAA based on host controller max slots usb: xhci: refactor DCBAA struct xhci: Prevent queuing new commands if xhci is inaccessible xhci: dbc: detect and recover hung DbC during enumeraton xhci: dbc: add timestamps to DbC state changes in a new helper. xhci: dbc: add helper to set and clear DbC DCE enable bit xhci: dbc: serialize enabling and disabling dbc xhci: dbc: Fix sysfs ABI Documentation for xhci dbc states usb: xhci: Improve Soft Retries after short transfers usb: xhci: Remove isochronous URB_SHORT_NOT_OK handling usb: xhci: Remove skip_isoc_td() usb: xhci: Simplify xhci_quiesce() usb: xhci: remove legacy 'num_trbs_free' tracking usb: xhci: fix typo in xhci_set_port_power() comment ...

Merge tag 'soc-drivers-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2026-06-17T18:21:40+00:00

Pull SoC driver updates from Arnd Bergmann: "There are a few added drivers, but mostly the normal maintenance to drivers for firmware, memory controller and other soc specific hardware: - The NXP QuickEngine gets modern MSI support, which allows some cleanups to the GICv3 irqchip chip driver - A new SoC specific driver for the Renesas R-Car MFIS unit is added, encapsulating support for the on-chip mailbox and hwspinlock implementations that are not easily separated into individual drivers - The Qualcomm SoC drivers add support for additional SoC implementations, and flexibility around power management for the serial-engine driver as well as probing the LLCC driver using custom hardware descriptions inside of the device itself. - Added support for the Samsung thermal management unit - A cleanup to the Tegra 'PMC' driver interfaces to remove legacy APIs and allow multiple PMC instances everywhere. - Updates to the TI SCI and KNAS drivers to improve suspend/resume support. - Minor driver changes for mediatek, xilinx, allwinner, aspeed, tegra, broadcom, amd, microchip and starfive specific drivers - Memory controller updates for Tegra and Renesas for additional SoC types and other improvements. - Firmware driver updates for Arm FF-A, SMCCC and SCMI interfaces, to update driver probing, object lifetimes and address minor bugs" * tag 'soc-drivers-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (189 commits) Revert "firmware: zynqmp: Add dynamic CSU register discovery and sysfs interface" Revert "Documentation: ABI: add sysfs interface for ZynqMP CSU registers" memory: tegra234: drop dead NULL check in tegra234_mc_icc_aggregate() memory: tegra264: drop redundant tegra264_mc_icc_aggregate() memory: tegra186-emc: stop borrowing MC aggregate hook for EMC soc: aspeed: cleanup dead default for ASPEED_SOCINFO firmware: tegra: bpmp: Add support for multi-socket platforms firmware: tegra: bpmp: Propagate debugfs errors soc/tegra: pmc: Add Tegra238 support soc/tegra: pmc: Restrict power-off handler to Nexus 7 soc/tegra: pmc: Populate powergate debugfs only when needed soc/tegra: pmc: Move legacy code behind CONFIG_ARM guard soc/tegra: pmc: Remove unused legacy functions soc/tegra: pmc: Create PMC context dynamically firmware: samsung: acpm: remove compile-testing stubs firmware: samsung: acpm: Add devm_acpm_get_by_phandle helper firmware: samsung: acpm: Add TMU protocol support firmware: samsung: acpm: Make acpm_ops const and access via pointer firmware: samsung: acpm: Drop redundant _ops suffix in acpm_ops members firmware: samsung: acpm: Annotate rx_data->cmd with __counted_by_ptr ...

usb: host: xhci-rcar: Split R-Car Gen2 and Gen3 .plat_start() handling

2026-06-03T17:23:37+00:00

Currently, R-Car Gen2 and Gen3 share the same .plat_start() callback. However, this single callback performs different operations, after checking the XHCI's controller compatible value. Avoid repeated checking of compatible values and reduce kernel size by splitting this method in two separate functions. Update xhci_rcar_resume_quirk() to dispatch to the correct method by calling it through the .plat_start() function pointer, too. Signed-off-by: Geert Uytterhoeven Link: https://patch.msgid.link/d1ee4e1bb9106f8251b061b52948434d560b4675.1780499433.git.geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman

usb: host: xhci-rcar: Remove SET_XHCI_PLAT_PRIV_FOR_RCAR() macro

2026-06-03T17:23:37+00:00

The SET_XHCI_PLAT_PRIV_FOR_RCAR() macro does not add much value (there are only two users), and stands in the way of handling differences between R-Car Gen2 and Gen3. Remove it. Signed-off-by: Geert Uytterhoeven Link: https://patch.msgid.link/a7083c3c822837556b91d845bd449c099db64769.1780499433.git.geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman

usb: xhci: allocate internal DCBAA mirror dynamically

2026-06-03T17:23:30+00:00

Allocate the internal virtual device array dynamically based on the maximum number of slots reported by the host controller. Previously, the array was always allocated to the absolute maximum of 255 entries. Repurpose the 'MAX_HC_SLOTS' macro to limit the number of enabled slots. This mirrors how the maximum number of ports and interrupters are handled. The allocation now uses kcalloc_node(), which zeroes the memory automatically, making the explicit memset() call unnecessary. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://patch.msgid.link/20260603091132.1110849-16-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman

usb: xhci: allocate DCBAA based on host controller max slots

2026-06-03T17:23:30+00:00

Allocate the Device Context Base Address Array (DCBAA) according to the maximum number of device slots supported by the host controller, instead of always allocating the absolute maximum of 255 entries. The xHCI specification defines the DCBAA size as (MaxSlotsEnabled + 1) entries. In the xhci driver there is currently no distinction between MaxSlots and MaxSlotsEnabled, as all available slots are enabled during initialization. As a result, 'max_slots' effectively represents both values. This change allows the xHCI driver to respect custom slot limits, reduces unnecessary memory usage, and removes the obsolete "TODO" comment. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://patch.msgid.link/20260603091132.1110849-15-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman

usb: xhci: refactor DCBAA struct

2026-06-03T17:23:29+00:00

Embed the 'xhci_device_context_array' structure directly within 'xhci_hcd' instead of allocating it as a separate block. Only the array of device context addresses is now allocated separately. Since the device context addresses are no longer part of an array structure, rename 'dev_context_ptrs' to 'ctx_array' for clearer access semantics. Also remove the redundant comment next to the 'ctx_array' allocation; using dma_alloc_coherent() for 64-bit * N allocations guarantees both physically contiguous and properly aligned for 64-byte boundaries. The xHCI section (5.4.6) refers to DCBAAP instead of DCBAA (6.1). This change does not modify the number of host controller slots but simplifies memory management and prepares the driver for a variable number of HC slots in the future. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://patch.msgid.link/20260603091132.1110849-14-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman

xhci: Prevent queuing new commands if xhci is inaccessible

2026-06-03T17:23:29+00:00

Refuse to queue a new command on the command ring if xHC is marked inaccessible with the HCD_FLAG_HW_ACCESSIBLE. HCD_FLAG_HW_ACCESSIBLE is set and cleared in suspend and resume. Also print a warning if xhci is being suspended with commands still pending on the command ring. Signed-off-by: Mathias Nyman Link: https://patch.msgid.link/20260603091132.1110849-13-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman

xhci: dbc: detect and recover hung DbC during enumeraton

2026-06-03T17:23:29+00:00

Add a timeout between the detection of the debug host connection and the DbC Run transition to ‘1’. Toggle the DCE bit to re-enable DbC in order to retry the debug device enumeration process if the DbC run transition takes too long. Set the timeout to 2 seconds See xhci specification section 7.6.4.1 "Debug Capability Initialization" Also detect cable disconnect during enable and connected state. Signed-off-by: Mathias Nyman Link: https://patch.msgid.link/20260603091132.1110849-12-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman

xhci: dbc: add timestamps to DbC state changes in a new helper.

2026-06-03T17:23:29+00:00

The timestamp helps us track when a state changed the last time. It allows us to detect if DbC is stuck in connected state for too long, and can later be used to enable runtime suspend if there is no activity for some time Signed-off-by: Mathias Nyman Link: https://patch.msgid.link/20260603091132.1110849-11-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman