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thunderbolt: Make tb_switch_find_cap() available to other files

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We need to find switch capabilities in order to implement TMU support so
make it available to other files as well.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20191217123345.31850-7-mika.westerberg@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rajmohan Mani 2019-12-17 15:33:42 +03:00 committed by Greg Kroah-Hartman
parent 690ac0d20d
commit aa43a9dcf7
2 changed files with 11 additions and 1 deletions
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11
drivers/thunderbolt/cap.c
View File

@ -113,7 +113,16 @@ int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap)
return ret;
}
static int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap)
/**
* tb_switch_find_cap() - Find switch capability
* @sw Switch to find the capability for
* @cap: Capability to look
*
* Returns offset to start of capability or %-ENOENT if no such
* capability was found. Negative errno is returned if there was an
* error.
*/
int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap)
{
int offset = sw->config.first_cap_offset;

1
drivers/thunderbolt/tb.h
View File

@ -685,6 +685,7 @@ struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end,
struct tb_port *prev);
int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec);
int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap);
int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap);
bool tb_port_is_enabled(struct tb_port *port);