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firmware: turris-mox-rwtm: Fix checking return value of wait_for_completion_timeout()

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The wait_for_completion_timeout() function returns 0 if timed out, and a
positive value if completed. Fix the usage of this function.

Fixes: 389711b374 ("firmware: Add Turris Mox rWTM firmware driver")
Fixes: 2eab59cf0d ("firmware: turris-mox-rwtm: fail probing when firmware does not support hwrng")
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Marek Behún 2024-07-15 13:59:11 +02:00 • committed by Arnd Bergmann
parent 0bafb172b1
commit 8467cfe821
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GPG key ID: 60AB47FFC9095227
1 changed files with 6 additions and 9 deletions
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15
drivers/firmware/turris-mox-rwtm.c
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@ -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);
}