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authorRajmohan Mani <rajmohan.mani@intel.com>2019-12-17 13:33:42 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-12-18 15:40:36 +0100
commitaa43a9dcf7fcb71f34689bc63cdfb3464d2bebbb (patch)
treee956b031cb32e116b09c7443a8f1a89a570c95b6 /drivers/thunderbolt
parentthunderbolt: Update Kconfig entries to USB4 (diff)
downloadlinux-aa43a9dcf7fcb71f34689bc63cdfb3464d2bebbb.tar.xz
linux-aa43a9dcf7fcb71f34689bc63cdfb3464d2bebbb.zip
thunderbolt: Make tb_switch_find_cap() available to other files
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>
Diffstat (limited to 'drivers/thunderbolt')
-rw-r--r--drivers/thunderbolt/cap.c11
-rw-r--r--drivers/thunderbolt/tb.h1
2 files changed, 11 insertions, 1 deletions
diff --git a/drivers/thunderbolt/cap.c b/drivers/thunderbolt/cap.c
index fdd77bb4628d..19db6cdc5b70 100644
--- a/drivers/thunderbolt/cap.c
+++ b/drivers/thunderbolt/cap.c
@@ -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;
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index 0158f0e9858c..28dd0e0b1579 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -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);