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| author | Gil Fine <gil.fine@linux.intel.com> | 2023-08-10 22:37:14 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-10-20 18:18:01 +0300 |
| commit | 2bfeca73e94567c1a117ca45d2e8a25d63e5bd2c (patch) | |
| tree | 07815aa037a7e03ad44c022b7dfddc3fb7f6b5ef /drivers/thunderbolt/tb.h | |
| parent | ce91d793ab8bc55804cdac2536bc33c249e75196 (diff) | |
| download | linux-2bfeca73e94567c1a117ca45d2e8a25d63e5bd2c.tar.xz | |
thunderbolt: Introduce tb_port_path_direction_downstream()
Introduce tb_port_path_direction_downstream() to check if path from
source adapter to destination adapter is directed towards downstream.
Convert existing users to call this helper instead of open-coding.
No functional changes.
Signed-off-by: Gil Fine <gil.fine@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 3c9ae5584569..6d49510eea09 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1041,6 +1041,21 @@ void tb_port_release_out_hopid(struct tb_port *port, int hopid); struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end, struct tb_port *prev); +/** + * tb_port_path_direction_downstream() - Checks if path directed downstream + * @src: Source adapter + * @dst: Destination adapter + * + * Returns %true only if the specified path from source adapter (@src) + * to destination adapter (@dst) is directed downstream. + */ +static inline bool +tb_port_path_direction_downstream(const struct tb_port *src, + const struct tb_port *dst) +{ + return src->sw->config.depth < dst->sw->config.depth; +} + static inline bool tb_port_use_credit_allocation(const struct tb_port *port) { return tb_port_is_null(port) && port->sw->credit_allocation; |