This is a note to let you know that I've just added the patch titled
firmware: turris-mox-rwtm: Fix checking return value of wait_for_completion_timeout()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
firmware-turris-mox-rwtm-fix-checking-return-value-o.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f40a2e400c363c0dcffd96c40ea3c3061ff291bc
Author: Marek Behún <kabel@xxxxxxxxxx>
Date: Mon Jul 15 13:59:11 2024 +0200
firmware: turris-mox-rwtm: Fix checking return value of wait_for_completion_timeout()
[ Upstream commit 8467cfe821ac3526f7598682ad5f90689fa8cc49 ]
The wait_for_completion_timeout() function returns 0 if timed out, and a
positive value if completed. Fix the usage of this function.
Fixes: 389711b37493 ("firmware: Add Turris Mox rWTM firmware driver")
Fixes: 2eab59cf0d20 ("firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng")
Signed-off-by: Marek Behún <kabel@xxxxxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy@xxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/firmware/turris-mox-rwtm.c b/drivers/firmware/turris-mox-rwtm.c
index fa4b904d74df1..98bdfadfa1d9e 100644
--- a/drivers/firmware/turris-mox-rwtm.c
+++ b/drivers/firmware/turris-mox-rwtm.c
@@ -202,9 +202,8 @@ static int mox_get_board_info(struct mox_rwtm *rwtm)
if (ret < 0)
return ret;
- ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
- if (ret < 0)
- return ret;
+ if (!wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2))
+ return -ETIMEDOUT;
ret = mox_get_status(MBOX_CMD_BOARD_INFO, reply->retval);
if (ret == -ENODATA) {
@@ -238,9 +237,8 @@ static int mox_get_board_info(struct mox_rwtm *rwtm)
if (ret < 0)
return ret;
- ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
- if (ret < 0)
- return ret;
+ if (!wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2))
+ return -ETIMEDOUT;
ret = mox_get_status(MBOX_CMD_ECDSA_PUB_KEY, reply->retval);
if (ret == -ENODATA) {
@@ -277,9 +275,8 @@ static int check_get_random_support(struct mox_rwtm *rwtm)
if (ret < 0)
return ret;
- ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
- if (ret < 0)
- return ret;
+ if (!wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2))
+ return -ETIMEDOUT;
return mox_get_status(MBOX_CMD_GET_RANDOM, rwtm->reply.retval);
}
