kernel/git/stable/linux.git/drivers/thunderbolt/tb.h, branch linux-7.2.y

thunderbolt: Move pci_device out of tb_nhi

2026-05-21T12:29:05+00:00

Not all USB4/TB implementations are based on a PCIe-attached controller. In order to make way for these, start off with moving the pci_device reference out of the main tb_nhi structure. Encapsulate the existing struct in a new tb_nhi_pci, that shall also house all properties that relate to the parent bus. Similarly, any other type of controller will be expected to contain tb_nhi as a member. Signed-off-by: Konrad Dybcio Signed-off-by: Mika Westerberg

thunderbolt: Verify PCIe adapter in detect state before tunnel setup

2026-05-20T09:54:34+00:00

The USB4 Connection Manager guide suggests that a PCIe downstream and PCIe upstream adapters of the USB4 router is in the Detect state before setting up a PCIe tunnel. Add this check by verifying the LTSSM field in ADP_PCIE_CS_0 before tunnel setup. Signed-off-by: Gil Fine Signed-off-by: Mika Westerberg

thunderbolt: Add support for ConfigFS

2026-05-19T12:20:18+00:00

This adds ConfigFS support to USB4/Thunderbolt bus. By itself this just creates the subsystem but it exposes functions that can be used to register groups under it. Signed-off-by: Mika Westerberg

thunderbolt: Remove XDomain from the bus without holding tb->lock

2026-05-05T11:53:46+00:00

Currently we call device_unregister() for services and the XDomain itself with tb->lock held. This prevents the service drivers from calling any functions that may take it. For this reason separate removing the XDomain from the topology data structures (where we need the lock) from unregistering the device from the bus (where remove callbacks of the drivers are being called). Signed-off-by: Mika Westerberg

thunderbolt: Use kzalloc_flex() for struct tb_path allocation

2026-03-23T05:49:43+00:00

Simplifies allocation of struct tb_path by using a flexible array member. Also added __counted_by for extra runtime analysis. Signed-off-by: Rosen Penev Reviewed-by: Kees Cook Signed-off-by: Mika Westerberg

thunderbolt: Fix typos in tb.h

2025-11-17T07:24:24+00:00

Fix typos in tb.h. No functional changes. Signed-off-by: Alan Borzeszkowski Signed-off-by: Mika Westerberg

thunderbolt: Add missing documentation in tb.h

2025-09-17T05:32:59+00:00

Add missing parameters and struct/enum description in tb.h kernel-doc comments. No functional changes. Signed-off-by: Alan Borzeszkowski Signed-off-by: Mika Westerberg

thunderbolt: Update tb.h function documentation

2025-09-17T05:32:59+00:00

Make tb.h function documentation compliant with current kernel-doc standards. No functional changes. Signed-off-by: Alan Borzeszkowski Signed-off-by: Mika Westerberg

thunderbolt: Fix wake on connect at runtime

2025-06-23T09:46:19+00:00

commit 1a760d10ded37 ("thunderbolt: Fix a logic error in wake on connect") fixated on the USB4 port sysfs wakeup file not working properly to control policy, but it had an unintended side effect that the sysfs file controls policy both at runtime and at suspend time. The sysfs file is supposed to only control behavior while system is suspended. Pass whether programming a port for runtime into usb4_switch_set_wake() and if runtime then ignore the value in the sysfs file. Cc: stable@vger.kernel.org Reported-by: Alexander Kovacs Tested-by: Alexander Kovacs Fixes: 1a760d10ded37 ("thunderbolt: Fix a logic error in wake on connect") Signed-off-by: Mario Limonciello Signed-off-by: Mika Westerberg

thunderbolt: Introduce domain event message handler

2025-04-24T05:24:38+00:00

This patch introduces a function that can be used to send uevent notifications in the domain to userspace. For instance, it can indicate that a DisplayPort tunnel could not be established due to insufficient bandwidth. Userspace can then forward to user via dialog or similar. Convert boot_acl_store() to call this instead of open-coding. Signed-off-by: Alan Borzeszkowski Signed-off-by: Mika Westerberg