[hmac, sw] Reintroduce idle polling timeout

andrea-caforio · martin-velay · h-filali · commit d5cb56d5ee76 · 2025-10-31T18:29:51.000+01:00
The previously reverted commit f591bea (later refined in e869152) contained a desirable timeout implementation for the HMAC idle polling (see #23191). This commit reinstantiates it. Signed-off-by: Andrea Caforio <andrea.caforio@lowrisc.org> Co-authored-by: Martin Velay <mvelay@lowrisc.org> (cherry picked from commit a0304b2)
diff --git a/sw/device/lib/crypto/drivers/hmac.c b/sw/device/lib/crypto/drivers/hmac.c
@@ -116,8 +116,6 @@ typedef enum hmac_key_length {
  * It returns error if HMAC HWIP becomes idle without firing `hmac_done`
  * interrupt.
  *
- * TODO(#23191): It might be beneficial to have a timeout value for the polling.
- *
  * @return Result of the operation.
  */
 OT_WARN_UNUSED_RESULT

Original file line number	Diff line number	Diff line change
`@@ -116,8 +116,6 @@ typedef enum hmac_key_length {`
`116`	`116`	* It returns error if HMAC HWIP becomes idle without firing `hmac_done`
`117`	`117`	`* interrupt.`
`118`	`118`	`*`
`119`		`- * TODO(#23191): It might be beneficial to have a timeout value for the polling.`
`120`		`- *`
`121`	`119`	`* @return Result of the operation.`
`122`	`120`	`*/`
`123`	`121`	`OT_WARN_UNUSED_RESULT`