thunderbolt: Expose make_header() to other files

We will be using this function in files introduced in subsequent
patches. While there the function is renamed to tb_cfg_make_header()
following tb_cfg_get_route().

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com>
Reviewed-by: Michael Jamet <michael.jamet@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 15 deletions

diff --git a/drivers/thunderbolt/ctl.c b/drivers/thunderbolt/ctl.c
index 8352ee8662aa..c6633da582b8 100644
--- a/drivers/thunderbolt/ctl.c
+++ b/drivers/thunderbolt/ctl.c
@@ -54,17 +54,6 @@ struct tb_ctl {
 
 /* utility functions */
 
-static struct tb_cfg_header make_header(u64 route)
-{
-        struct tb_cfg_header header = {
-                .route_hi = route >> 32,
-                .route_lo = route,
-        };
-        /* check for overflow, route_hi is not 32 bits! */
-        WARN_ON(tb_cfg_get_route(&header) != route);
-        return header;
-}
-
 static int check_header(struct ctl_pkg *pkg, u32 len, enum tb_cfg_pkg_type type,
                         u64 route)
 {
@@ -501,7 +490,7 @@ int tb_cfg_error(struct tb_ctl *ctl, u64 route, u32 port,
                  enum tb_cfg_error error)
 {
         struct cfg_error_pkg pkg = {
-                .header = make_header(route),
+                .header = tb_cfg_make_header(route),
                 .port = port,
                 .error = error,
         };
@@ -520,7 +509,7 @@ struct tb_cfg_result tb_cfg_reset(struct tb_ctl *ctl, u64 route,
                                   int timeout_msec)
 {
         int err;
-        struct cfg_reset_pkg request = { .header = make_header(route) };
+        struct cfg_reset_pkg request = { .header = tb_cfg_make_header(route) };
         struct tb_cfg_header reply;
 
         err = tb_ctl_tx(ctl, &request, sizeof(request), TB_CFG_PKG_RESET);
@@ -542,7 +531,7 @@ struct tb_cfg_result tb_cfg_read_raw(struct tb_ctl *ctl, void *buffer,
 {
         struct tb_cfg_result res = { 0 };
         struct cfg_read_pkg request = {
-                .header = make_header(route),
+                .header = tb_cfg_make_header(route),
                 .addr = {
                         .port = port,
                         .space = space,
@@ -579,7 +568,7 @@ struct tb_cfg_result tb_cfg_write_raw(struct tb_ctl *ctl, const void *buffer,
 {
         struct tb_cfg_result res = { 0 };
         struct cfg_write_pkg request = {
-                .header = make_header(route),
+                .header = tb_cfg_make_header(route),
                 .addr = {
                         .port = port,
                         .space = space,