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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-11-14 17:20:59 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-12-07 15:18:33 +0300 |
| commit | 43bddb26e20af916249b5318200cfe1734c1700c (patch) | |
| tree | 4adc0f841b67230a9076724f52d3db4a558661f7 /drivers/thunderbolt/tunnel.h | |
| parent | f3380cac0c0b3a6f49ab161e2a057c363962f48d (diff) | |
| download | lwn-43bddb26e20af916249b5318200cfe1734c1700c.tar.gz lwn-43bddb26e20af916249b5318200cfe1734c1700c.zip | |
thunderbolt: Tear down existing tunnels when resuming from hibernate
If the boot firmware implements connection manager of its own it may not
create the paths in the same way or order we do. For example it may
create first PCIe tunnel and then USB3 tunnel. When we restore our
tunnels (first de-activating them) we may be doing that over completely
different tunnels and that leaves them possibly non-functional. For this
reason we re-use the tunnel discovery functionality and find out all the
existing tunnels, and tear them down. Once that is done we can restore
our tunnels.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tunnel.h')
| -rw-r--r-- | drivers/thunderbolt/tunnel.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/thunderbolt/tunnel.h b/drivers/thunderbolt/tunnel.h index eea14e24f7e0..03e56076b5bc 100644 --- a/drivers/thunderbolt/tunnel.h +++ b/drivers/thunderbolt/tunnel.h @@ -64,10 +64,12 @@ struct tb_tunnel { int allocated_down; }; -struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down); +struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down, + bool alloc_hopid); struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up, struct tb_port *down); -struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in); +struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in, + bool alloc_hopid); struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in, struct tb_port *out, int max_up, int max_down); @@ -77,7 +79,8 @@ struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi, int receive_ring); bool tb_tunnel_match_dma(const struct tb_tunnel *tunnel, int transmit_path, int transmit_ring, int receive_path, int receive_ring); -struct tb_tunnel *tb_tunnel_discover_usb3(struct tb *tb, struct tb_port *down); +struct tb_tunnel *tb_tunnel_discover_usb3(struct tb *tb, struct tb_port *down, + bool alloc_hopid); struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up, struct tb_port *down, int max_up, int max_down); |