diff options
Diffstat (limited to 'drivers/thunderbolt/switch.c')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 1e29c06947af..63ff4c753d89 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1182,6 +1182,10 @@ struct tb_switch *tb_switch_alloc(struct tb *tb, struct device *parent, } sw->cap_plug_events = cap; + cap = tb_switch_find_vse_cap(sw, TB_VSE_CAP_LINK_CONTROLLER); + if (cap > 0) + sw->cap_lc = cap; + /* Root switch is always authorized */ if (!route) sw->authorized = true; @@ -1278,22 +1282,17 @@ int tb_switch_configure(struct tb_switch *sw) static int tb_switch_set_uuid(struct tb_switch *sw) { u32 uuid[4]; - int cap, ret; + int ret; - ret = 0; if (sw->uuid) - return ret; + return 0; /* * The newer controllers include fused UUID as part of link * controller specific registers */ - cap = tb_switch_find_vse_cap(sw, TB_VSE_CAP_LINK_CONTROLLER); - if (cap > 0) { - ret = tb_sw_read(sw, uuid, TB_CFG_SWITCH, cap + 3, 4); - if (ret) - return ret; - } else { + ret = tb_lc_read_uuid(sw, uuid); + if (ret) { /* * ICM generates UUID based on UID and fills the upper * two words with ones. This is not strictly following @@ -1308,8 +1307,8 @@ static int tb_switch_set_uuid(struct tb_switch *sw) sw->uuid = kmemdup(uuid, sizeof(uuid), GFP_KERNEL); if (!sw->uuid) - ret = -ENOMEM; - return ret; + return -ENOMEM; + return 0; } static int tb_switch_add_dma_port(struct tb_switch *sw) |