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| author | Mika Westerberg | 2017-10-11 16:19:54 +0200 |
|---|---|---|
| committer | Mika Westerberg | 2019-04-18 10:18:53 +0200 |
| commit | 344e06430a72347b554a7fd98f3a961084f37be6 (patch) | |
| tree | 749030b9462451e58673e0ceb987be245d26c978 /drivers/thunderbolt/tb.h | |
| parent | thunderbolt: Add support for full PCIe daisy chains (diff) | |
| download | kernel-qcow2-linux-344e06430a72347b554a7fd98f3a961084f37be6.tar.gz kernel-qcow2-linux-344e06430a72347b554a7fd98f3a961084f37be6.tar.xz kernel-qcow2-linux-344e06430a72347b554a7fd98f3a961084f37be6.zip | |
thunderbolt: Scan only valid NULL adapter ports in hotplug
The only way to expand Thunderbolt topology is through the NULL adapter
ports (typically ports 1, 2, 3 and 4). There is no point handling
Thunderbolt hotplug events on any other port.
Add a helper function (tb_port_is_null()) that can be used to determine
if the port is NULL port, and use it in software connection manager code
when hotplug event is handled.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 5b5ba8919086..260360ec59a9 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -350,6 +350,11 @@ static inline bool tb_port_has_remote(const struct tb_port *port) return true; } +static inline bool tb_port_is_null(const struct tb_port *port) +{ + return port && port->port && port->config.type == TB_TYPE_PORT; +} + static inline bool tb_port_is_pcie_down(const struct tb_port *port) { return port && port->config.type == TB_TYPE_PCIE_DOWN; |