thunderbolt: Make __TB_[SW|PORT]_PRINT take const parameters

The printing macros do not modify the passed object so make them
const. While there make tb_route() to take const parameter as well.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 119a0083799299c9cc7e5e4af0b0e308a09144a5..15d225dcb40320b10fa08e5460dd892d0bd1f8d3 100644 (file)
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -320,7 +320,7 @@ static inline bool tb_is_upstream_port(const struct tb_port *port)
        return port == upstream_port || port->dual_link_port == upstream_port;
 }
 
-static inline u64 tb_route(struct tb_switch *sw)
+static inline u64 tb_route(const struct tb_switch *sw)
 {
        return ((u64) sw->config.route_hi) << 32 | sw->config.route_lo;
 }
@@ -442,7 +442,7 @@ static inline int tb_port_write(struct tb_port *port, const void *buffer,
 
 #define __TB_SW_PRINT(level, sw, fmt, arg...)           \
        do {                                            \
-               struct tb_switch *__sw = (sw);          \
+               const struct tb_switch *__sw = (sw);    \
                level(__sw->tb, "%llx: " fmt,           \
                      tb_route(__sw), ## arg);          \
        } while (0)
@@ -453,7 +453,7 @@ static inline int tb_port_write(struct tb_port *port, const void *buffer,
 
 #define __TB_PORT_PRINT(level, _port, fmt, arg...)                      \
        do {                                                            \
-               struct tb_port *__port = (_port);                       \
+               const struct tb_port *__port = (_port);                 \
                level(__port->sw->tb, "%llx:%x: " fmt,                  \
                      tb_route(__port->sw), __port->port, ## arg);      \
        } while (0)