thunderbolt: Introduce tb_port_is_nhi()

This is useful if one needs to check if adapter (port) is the host
interface (NHI). Make tb_port_alloc_hopid() take advantage of this.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index a1d5de53a349..6aee18b4f53d 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -464,6 +464,11 @@ 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_nhi(const struct tb_port *port)
+{
+	return port && port->config.type == TB_TYPE_NHI;
+}
+
 static inline bool tb_port_is_pcie_down(const struct tb_port *port)
 {
 	return port && port->config.type == TB_TYPE_PCIE_DOWN;