kernel/git/stable/linux.git/drivers/thunderbolt/domain.c, 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: 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: Wait for tb_domain_release() to complete when driver is removed

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

We should not call nhi_shutdown() before the domain structure and the control channel rings are completely released. Otherwise we might release resources like the nhi->msix_ida that are still referenced in tb_domain_release(). For this reason wait for the tb_domain_release() to be completed before continuing to nhi_shutdown() and eventually releasing of the rest of the data structures. Signed-off-by: Mika Westerberg

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

thunderbolt: Fix typos in domain.c

2025-11-17T07:22:51+00:00

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

thunderbolt: Update domain.c function documentation

2025-09-17T05:32:58+00:00

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

thunderbolt: Use HMAC-SHA256 library instead of crypto_shash

2025-08-11T05:56:14+00:00

Use the hmac_sha256_usingrawkey() library function instead of the "hmac(sha256)" crypto_shash. This is simpler and faster. As a cleanup, change the input data parameters from "challenge, sizeof(hmac)" to "challenge, sizeof(challenge)", so that the size is being taken of the correct buffer. This is not a functional change, since it happens that sizeof(hmac) == sizeof(challenge). Replace the selection of CRYPTO and CRYPTO_HASH with CRYPTO_LIB_SHA256 and CRYPTO_LIB_UTILS. The latter is needed for crypto_memneq() which was previously being pulled in via CRYPTO. Signed-off-by: Eric Biggers Signed-off-by: Mika Westerberg

thunderbolt: Compare HMAC values in constant time

2025-08-11T05:56:13+00:00

To prevent timing attacks, HMAC value comparison needs to be constant time. Replace the memcmp() with the correct function, crypto_memneq(). Fixes: f67cf491175a ("thunderbolt: Add support for Internal Connection Manager (ICM)") Signed-off-by: Eric Biggers Signed-off-by: Mika Westerberg