[PATCH] scsi: isci: Remove redundant check in isci_task_request_build()

Artem Chernyshev
2023-11-28T12:12:10Z

sci_task_request_construct_ssp() have invariant return. Change
this function to void and get rid of unnecessary checks.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Artem Chernyshev <artem.chernyshev@red-soft.ru>
---
drivers/scsi/isci/request.c | 5 +----
drivers/scsi/isci/request.h | 2 +-
drivers/scsi/isci/task.c | 4 +---
3 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index a7b3243b471d..71f711cb0628 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -738,8 +738,7 @@ static enum sci_status sci_io_request_construct_basic_ssp(struct isci_request *i
return SCI_SUCCESS;
}

-enum sci_status sci_task_request_construct_ssp(
- struct isci_request *ireq)
+void sci_task_request_construct_ssp(struct isci_request *ireq)
{
/* Construct the SSP Task SCU Task Context */
scu_ssp_task_request_construct_task_context(ireq);
@@ -748,8 +747,6 @@ enum sci_status sci_task_request_construct_ssp(
sci_task_request_build_ssp_task_iu(ireq);

sci_change_state(&ireq->sm, SCI_REQ_CONSTRUCTED);
-
- return SCI_SUCCESS;
}

static enum sci_status sci_io_request_construct_basic_sata(struct isci_request *ireq)
diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h
index 20b141739e4d..79ddfffbf73c 100644
--- a/drivers/scsi/isci/request.h
+++ b/drivers/scsi/isci/request.h
@@ -300,7 +300,7 @@ sci_task_request_construct(struct isci_host *ihost,
struct isci_remote_device *idev,
u16 io_tag,
struct isci_request *ireq);
-enum sci_status sci_task_request_construct_ssp(struct isci_request *ireq);
+void sci_task_request_construct_ssp(struct isci_request *ireq);
void sci_smp_request_copy_response(struct isci_request *ireq);

static inline int isci_task_is_ncq_recovery(struct sas_task *task)
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index c514b20293b2..3a25b1a2c52d 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -243,9 +243,7 @@ static struct isci_request *isci_task_request_build(struct isci_host *ihost,
/* XXX convert to get this from task->tproto like other drivers */
if (dev->dev_type == SAS_END_DEVICE) {
isci_tmf->proto = SAS_PROTOCOL_SSP;
- status = sci_task_request_construct_ssp(ireq);
- if (status != SCI_SUCCESS)
- return NULL;
+ sci_task_request_construct_ssp(ireq);
}

return ireq;
--
2.37.3