Fix management of argument a0 output value of arm_smccc_1_1_invoke() that should consider only SMCCC_RET_NOT_SUPPORTED as reporting an unsupported function ID as correctly stated in the inline comment.
Signed-off-by: Etienne Carriere <[email protected]> --- drivers/firmware/arm_scmi/smc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c index 49bc4b0e8428..637ad439545f 100644 --- a/drivers/firmware/arm_scmi/smc.c +++ b/drivers/firmware/arm_scmi/smc.c @@ -115,7 +115,7 @@ static int smc_send_message(struct scmi_chan_info *cinfo, mutex_unlock(&scmi_info->shmem_lock); /* Only SMCCC_RET_NOT_SUPPORTED is valid error code */ - if (res.a0) + if (res.a0 == SMCCC_RET_NOT_SUPPORTED) return -EOPNOTSUPP; return 0; } -- 2.17.1
