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thunderbolt: Make tb_find_port() available to other files

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We will be needing this when adding initial USB4 support so make it
available to other files in the driver as well. We also rename it to
tb_switch_find_port() to follow conventions used in switch.c.

No functional changes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20191217123345.31850-2-mika.westerberg@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mika Westerberg 2019-12-17 15:33:37 +03:00 committed by Greg Kroah-Hartman
parent 10e5e6c249
commit 386e5e29d8
3 changed files with 22 additions and 20 deletions
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18
drivers/thunderbolt/switch.c
View File

@ -2517,6 +2517,24 @@ struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route)
return NULL; return NULL;
} }
/**
* tb_switch_find_port() - return the first port of @type on @sw or NULL
* @sw: Switch to find the port from
* @type: Port type to look for
*/
struct tb_port *tb_switch_find_port(struct tb_switch *sw,
enum tb_port_type type)
{
struct tb_port *port;
tb_switch_for_each_port(sw, port) {
if (port->config.type == type)
return port;
}
return NULL;
}
void tb_switch_exit(void) void tb_switch_exit(void)
{ {
ida_destroy(&nvm_ida); ida_destroy(&nvm_ida);

22
drivers/thunderbolt/tb.c
View File

@ -338,24 +338,6 @@ static void tb_free_unplugged_children(struct tb_switch *sw)
} }
} }
/**
* tb_find_port() - return the first port of @type on @sw or NULL
* @sw: Switch to find the port from
* @type: Port type to look for
*/
static struct tb_port *tb_find_port(struct tb_switch *sw,
enum tb_port_type type)
{
struct tb_port *port;
tb_switch_for_each_port(sw, port) {
if (port->config.type == type)
return port;
}
return NULL;
}
/** /**
* tb_find_unused_port() - return the first inactive port on @sw * tb_find_unused_port() - return the first inactive port on @sw
* @sw: Switch to find the port on * @sw: Switch to find the port on
@ -586,7 +568,7 @@ static int tb_tunnel_pci(struct tb *tb, struct tb_switch *sw)
struct tb_switch *parent_sw; struct tb_switch *parent_sw;
struct tb_tunnel *tunnel; struct tb_tunnel *tunnel;
up = tb_find_port(sw, TB_TYPE_PCIE_UP); up = tb_switch_find_port(sw, TB_TYPE_PCIE_UP);
if (!up) if (!up)
return 0; return 0;
@ -624,7 +606,7 @@ static int tb_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd)
sw = tb_to_switch(xd->dev.parent); sw = tb_to_switch(xd->dev.parent);
dst_port = tb_port_at(xd->route, sw); dst_port = tb_port_at(xd->route, sw);
nhi_port = tb_find_port(tb->root_switch, TB_TYPE_NHI); nhi_port = tb_switch_find_port(tb->root_switch, TB_TYPE_NHI);
mutex_lock(&tb->lock); mutex_lock(&tb->lock);
tunnel = tb_tunnel_alloc_dma(tb, nhi_port, dst_port, xd->transmit_ring, tunnel = tb_tunnel_alloc_dma(tb, nhi_port, dst_port, xd->transmit_ring,

2
drivers/thunderbolt/tb.h
View File

@ -533,6 +533,8 @@ void tb_switch_suspend(struct tb_switch *sw);
int tb_switch_resume(struct tb_switch *sw); int tb_switch_resume(struct tb_switch *sw);
int tb_switch_reset(struct tb *tb, u64 route); int tb_switch_reset(struct tb *tb, u64 route);
void tb_sw_set_unplugged(struct tb_switch *sw); void tb_sw_set_unplugged(struct tb_switch *sw);
struct tb_port *tb_switch_find_port(struct tb_switch *sw,
enum tb_port_type type);
struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link, struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
u8 depth); u8 depth);
struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid); struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);