thunderbolt: Update cap.c function documentation

Make cap.c function documentation compliant with current kernel-doc
standards. No functional changes.

Signed-off-by: Alan Borzeszkowski <alan.borzeszkowski@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

1 files changed, 31 insertions, 18 deletions

diff --git a/drivers/thunderbolt/cap.c b/drivers/thunderbolt/cap.c
index 8ecd610c62d5..4ab22d5291ac 100644
--- a/drivers/thunderbolt/cap.c
+++ b/drivers/thunderbolt/cap.c
@@ -64,10 +64,14 @@ static void tb_port_dummy_read(struct tb_port *port)
  * @port: Port to find the capability for
  * @offset: Previous capability offset (%0 for start)
  *
- * Returns dword offset of the next capability in port config space
- * capability list and returns it. Passing %0 returns the first entry in
- * the capability list. If no next capability is found returns %0. In case
- * of failure returns negative errno.
+ * Finds dword offset of the next capability in port config space
+ * capability list. When passed %0 in @offset parameter, first entry
+ * will be returned, if it exists.
+ *
+ * Return:
+ * * Double word offset of the first or next capability - On success.
+ * * %0 - If no next capability is found.
+ * * Negative errno - Another error occurred.
  */
 int tb_port_next_cap(struct tb_port *port, unsigned int offset)
 {
@@ -112,9 +116,10 @@ static int __tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap)
  * @port: Port 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.
+ * Return:
+ * * Offset to the start of capability - On success.
+ * * %-ENOENT - If no such capability was found.
+ * * Negative errno - Another error occurred.
  */
 int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap)
 {
@@ -137,10 +142,14 @@ int tb_port_find_cap(struct tb_port *port, enum tb_port_cap cap)
  * @sw: Switch to find the capability for
  * @offset: Previous capability offset (%0 for start)
  *
- * Finds dword offset of the next capability in router config space
- * capability list and returns it. Passing %0 returns the first entry in
- * the capability list. If no next capability is found returns %0. In case
- * of failure returns negative errno.
+ * Finds dword offset of the next capability in port config space
+ * capability list. When passed %0 in @offset parameter, first entry
+ * will be returned, if it exists.
+ *
+ * Return:
+ * * Double word offset of the first or next capability - On success.
+ * * %0 - If no next capability is found.
+ * * Negative errno - Another error occurred.
  */
 int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset)
 {
@@ -181,9 +190,10 @@ int tb_switch_next_cap(struct tb_switch *sw, unsigned int offset)
  * @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.
+ * Return:
+ * * Offset to the start of capability - On success.
+ * * %-ENOENT - If no such capability was found.
+ * * Negative errno - Another error occurred.
  */
 int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap)
 {
@@ -213,10 +223,13 @@ int tb_switch_find_cap(struct tb_switch *sw, enum tb_switch_cap cap)
  * @sw: Switch to find the capability for
  * @vsec: Vendor specific capability to look
  *
- * Functions enumerates vendor specific capabilities (VSEC) of a switch
- * and returns offset when capability matching @vsec is found. If no
- * such capability is found returns %-ENOENT. In case of error returns
- * negative errno.
+ * This function enumerates vendor specific capabilities (VSEC) of a
+ * switch and returns offset when capability matching @vsec is found.
+ *
+ * Return:
+ * * Offset of capability - On success.
+ * * %-ENOENT - If capability was not found.
+ * * Negative errno - Another error occurred.
  */
 int tb_switch_find_vse_cap(struct tb_switch *sw, enum tb_switch_vse_cap vsec)
 {