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thunderbolt: Fixes for v5.9-rc4

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This includes two fixes, one that fixes a regression around reboot and
 other that uses a correct link rate when USB3 bandwidth is reclaimed
 when the link is not up.
 
 Both have been in linux-next with no reported issues.
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Merge tag 'thunderbolt-for-v5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-linus

Mika writes:

thunderbolt: Fixes for v5.9-rc4

This includes two fixes, one that fixes a regression around reboot and
other that uses a correct link rate when USB3 bandwidth is reclaimed
when the link is not up.

Both have been in linux-next with no reported issues.

* tag 'thunderbolt-for-v5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
  thunderbolt: Use maximum USB3 link rate when reclaiming if link is not up
  thunderbolt: Disable ports that are not implemented
This commit is contained in:
Greg Kroah-Hartman 2020-09-01 09:48:28 +02:00
commit 6b6c71e897
3 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/thunderbolt/switch.c
View File

@ -684,6 +684,7 @@ static int tb_init_port(struct tb_port *port)
if (res == -ENODEV) {
tb_dbg(port->sw->tb, " Port %d: not implemented\n",
port->port);
port->disabled = true;
return 0;
}
return res;

2
drivers/thunderbolt/tb.h
View File

@ -186,7 +186,7 @@ struct tb_switch {
* @cap_adap: Offset of the adapter specific capability (%0 if not present)
* @cap_usb4: Offset to the USB4 port capability (%0 if not present)
* @port: Port number on switch
* @disabled: Disabled by eeprom
* @disabled: Disabled by eeprom or enabled but not implemented
* @bonded: true if the port is bonded (two lanes combined as one)
* @dual_link_port: If the switch is connected using two ports, points
* to the other port.

12
drivers/thunderbolt/tunnel.c
View File

@ -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.