diff options
| author | Gil Fine <gil.fine@intel.com> | 2022-05-26 13:59:16 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2022-06-06 12:19:22 +0300 |
| commit | 990f4b85d7d9bb954a24ada7145947dec501fe3d (patch) | |
| tree | d454a175539d81375f7feb07be25ff3e76595693 /drivers/thunderbolt/tb.c | |
| parent | f2906aa863381afb0015a9eb7fefad885d4e5a56 (diff) | |
| download | linux-990f4b85d7d9bb954a24ada7145947dec501fe3d.tar.xz | |
thunderbolt: Silently ignore CLx enabling in case CLx is not supported
We can't enable CLx if it is not supported either by the host or device,
or by the USB4/TBT link (e.g. when an optical cable is used).
We silently ignore CLx enabling in this case.
Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.c')
| -rw-r--r-- | drivers/thunderbolt/tb.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 9a3214fb5038..8ab3530dfa0d 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -575,6 +575,7 @@ static void tb_scan_port(struct tb_port *port) struct tb_cm *tcm = tb_priv(port->sw->tb); struct tb_port *upstream_port; struct tb_switch *sw; + int ret; if (tb_is_upstream_port(port)) return; @@ -663,7 +664,9 @@ static void tb_scan_port(struct tb_port *port) tb_switch_lane_bonding_enable(sw); /* Set the link configured */ tb_switch_configure_link(sw); - if (tb_switch_enable_clx(sw, TB_CL0S)) + /* Silently ignore CLx enabling in case CLx is not supported */ + ret = tb_switch_enable_clx(sw, TB_CL0S); + if (ret && ret != -EOPNOTSUPP) tb_sw_warn(sw, "failed to enable CLx on upstream port\n"); tb_switch_tmu_configure(sw, TB_SWITCH_TMU_RATE_HIFI, @@ -1446,12 +1449,15 @@ static int tb_suspend_noirq(struct tb *tb) static void tb_restore_children(struct tb_switch *sw) { struct tb_port *port; + int ret; /* No need to restore if the router is already unplugged */ if (sw->is_unplugged) return; - if (tb_switch_enable_clx(sw, TB_CL0S)) + /* Silently ignore CLx re-enabling in case CLx is not supported */ + ret = tb_switch_enable_clx(sw, TB_CL0S); + if (ret && ret != -EOPNOTSUPP) tb_sw_warn(sw, "failed to re-enable CLx on upstream port\n"); /* |