kernel/linux.git/drivers/thunderbolt/tb.h, branch v7.1

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

thunderbolt: Expose usb4_port_index() to other modules

2025-04-17T09:21:45+00:00

Make usb4_port_index() available to other files in the driver, rename and add function documentation. Signed-off-by: Alan Borzeszkowski Reviewed-by: Heikki Krogerus Signed-off-by: Mika Westerberg

thunderbolt: Expose router DROM through debugfs

2025-01-05T08:35:03+00:00

Router DROM contains information that might be usable for development and debugging purposes. For example when new entries are added to the USB4 spec it is useful to be able to look for them without need to change the kernel. For this reason expose the DROM through debugfs. Signed-off-by: Mika Westerberg

thunderbolt: debugfs: Implement asymmetric lane margining

2024-11-01T05:55:38+00:00

Add support for the RX2 receiver which is used as the third receiver in asymmetric links. This requires expanding the results array for the additional third data word of the hardware margining results. Signed-off-by: Aapo Vienamo Signed-off-by: Mika Westerberg

thunderbolt: debugfs: Don't hardcode margining results size

2024-11-01T05:55:38+00:00

Use ARRAY_SIZE() when available or pass in the array size derived from it. This is in preparation for adding another result data word for supporting Gen 4 asymmetric links with an additional lane. Signed-off-by: Aapo Vienamo Signed-off-by: Mika Westerberg