summaryrefslogtreecommitdiff
path: root/drivers/thunderbolt
diff options
context:
space:
mode:
authorMika Westerberg <mika.westerberg@linux.intel.com>2020-06-24 21:45:03 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2020-08-25 11:29:01 +0300
commit813050e0a9b871ac575abfd3d321f74916df609d (patch)
tree0ddc32ed10b78bcf40ffafa282670793bcbb70c6 /drivers/thunderbolt
parent8824d19b45867be75d375385414c4f06719a11a4 (diff)
downloadlinux-813050e0a9b871ac575abfd3d321f74916df609d.tar.xz
thunderbolt: Use maximum USB3 link rate when reclaiming if link is not up
If the USB3 link is not up the actual link rate is 0 so when reclaiming bandwidth we should look at maximum supported link rate instead. Cc: stable@vger.kernel.org Fixes: 0bd680cd900c ("thunderbolt: Add USB3 bandwidth management") Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
-rw-r--r--drivers/thunderbolt/tunnel.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/thunderbolt/tunnel.c b/drivers/thunderbolt/tunnel.c
index 2aae2c76d880..d50e5b93632a 100644
--- a/drivers/thunderbolt/tunnel.c
+++ b/drivers/thunderbolt/tunnel.c
@@ -951,10 +951,18 @@ static void tb_usb3_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
int ret, max_rate, allocate_up, allocate_down;
ret = usb4_usb3_port_actual_link_rate(tunnel->src_port);
- if (ret <= 0) {
- tb_tunnel_warn(tunnel, "tunnel is not up\n");
+ if (ret < 0) {
+ tb_tunnel_warn(tunnel, "failed to read actual link rate\n");
return;
+ } else if (!ret) {
+ /* Use maximum link rate if the link valid is not set */
+ ret = usb4_usb3_port_max_link_rate(tunnel->src_port);
+ if (ret < 0) {
+ tb_tunnel_warn(tunnel, "failed to read maximum link rate\n");
+ return;
+ }
}
+
/*
* 90% of the max rate can be allocated for isochronous
* transfers.