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* [PATCH v2] firmware: turris-mox-rwtm: Fix an error handling path in mox_get_board_info()
@ 2023-02-15  9:30 Christophe JAILLET
  2023-02-17 11:21 ` Marek Behún
  0 siblings, 1 reply; 5+ messages in thread
From: Christophe JAILLET @ 2023-02-15  9:30 UTC (permalink / raw)
  To: Marek Behún, Arnd Bergmann
  Cc: linux-kernel, kernel-janitors, Christophe JAILLET

wait_for_completion_timeout() returns 0 if timed out, and positive (at
least 1, or number of jiffies left till timeout) if completed.

In case of timeout, return -ETIMEDOUT.

Fixes: 389711b37493 ("firmware: Add Turris Mox rWTM firmware driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
Compile tested only.

v2:
   - Fix some other wait_for_completion_timeout() calls

---
 drivers/firmware/turris-mox-rwtm.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/firmware/turris-mox-rwtm.c b/drivers/firmware/turris-mox-rwtm.c
index 6ea5789a89e2..d6fc37ba897d 100644
--- a/drivers/firmware/turris-mox-rwtm.c
+++ b/drivers/firmware/turris-mox-rwtm.c
@@ -200,8 +200,8 @@ static int mox_get_board_info(struct mox_rwtm *rwtm)
 		return ret;
 
 	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
-	if (ret < 0)
-		return ret;
+	if (ret == 0)
+		return -ETIMEDOUT;
 
 	ret = mox_get_status(MBOX_CMD_BOARD_INFO, reply->retval);
 	if (ret == -ENODATA) {
@@ -236,8 +236,8 @@ static int mox_get_board_info(struct mox_rwtm *rwtm)
 		return ret;
 
 	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
-	if (ret < 0)
-		return ret;
+	if (ret == 0)
+		return -ETIMEDOUT;
 
 	ret = mox_get_status(MBOX_CMD_ECDSA_PUB_KEY, reply->retval);
 	if (ret == -ENODATA) {
@@ -275,8 +275,8 @@ static int check_get_random_support(struct mox_rwtm *rwtm)
 		return ret;
 
 	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
-	if (ret < 0)
-		return ret;
+	if (ret == 0)
+		return -ETIMEDOUT;
 
 	return mox_get_status(MBOX_CMD_GET_RANDOM, rwtm->reply.retval);
 }
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2023-07-13  8:56 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-02-15  9:30 [PATCH v2] firmware: turris-mox-rwtm: Fix an error handling path in mox_get_board_info() Christophe JAILLET
2023-02-17 11:21 ` Marek Behún
2023-07-11 16:44   ` Christophe JAILLET
2023-07-12 11:16     ` Marek Behún
2023-07-13  8:56       ` Gregory CLEMENT

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