diff options
| author | Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com> | 2025-10-02 15:37:22 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2026-05-05 13:53:46 +0200 |
| commit | cf0c38ee554c3e9062408cc3a38325483d52ecd0 (patch) | |
| tree | 20e3f83861328c9f843e494f1785596c4354cdc4 /include/linux | |
| parent | a8937f35cf39c39c64325aa84d0463d866850857 (diff) | |
thunderbolt: Don't create multiple DMA tunnels on firmware connection manager
Firmware connection manager supports only one DMA tunnel per XDomain
connection. Firmware prior Intel Titan Ridge failed the operation
directly but the same does not happen anymore on Titan Ridge and
forward. For this reason add an explicit check, and fail the operation
accordingly in the driver.
Signed-off-by: Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/thunderbolt.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/thunderbolt.h b/include/linux/thunderbolt.h index a5ef7100a6d3..bbdbbc84c999 100644 --- a/include/linux/thunderbolt.h +++ b/include/linux/thunderbolt.h @@ -228,6 +228,7 @@ enum tb_link_width { * changed notification * @bonding_possible: True if lane bonding is possible on local side * @target_link_width: Target link width from the remote host + * @ntunnels: Keeps track of how many tunnels go through this XDomain * @link: Root switch link the remote domain is connected (ICM only) * @depth: Depth in the chain the remote domain is connected (ICM only) * @@ -273,6 +274,7 @@ struct tb_xdomain { int properties_changed_retries; bool bonding_possible; u8 target_link_width; + atomic_t ntunnels; u8 link; u8 depth; }; |