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authorMika Westerberg <mika.westerberg@linux.intel.com>2020-10-22 13:22:06 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2021-02-04 10:45:25 +0300
commit5ca67688256a0aeede5cba288eaef4d8e4a9e622 (patch)
treef1720294f847f5238db5720cc231f64fc7575c78 /drivers/thunderbolt/tb.c
parent3cd542e6e6afb6fa6c34d4094d498f42e22110f5 (diff)
downloadlinux-5ca67688256a0aeede5cba288eaef4d8e4a9e622.tar.xz
thunderbolt: Allow disabling XDomain protocol
This allows disabling XDomain protocol completely if the user does not plan to use the USB4/Thunderbolt peer-to-peer functionality, or for security reasons. XDomain protocol is enabled by default but with this commit it is possible to disable it by passing "xdomain=0" as module parameter (or through the kernel command line). Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Diffstat (limited to 'drivers/thunderbolt/tb.c')
-rw-r--r--drivers/thunderbolt/tb.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c
index 413955aa6a94..ad3c285026d5 100644
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -179,6 +179,9 @@ static void tb_scan_xdomain(struct tb_port *port)
struct tb_xdomain *xd;
u64 route;
+ if (!tb_is_xdomain_enabled())
+ return;
+
route = tb_downstream_route(port);
xd = tb_xdomain_find_by_route(tb, route);
if (xd) {