According to LKP, commit [no upstream SHA yet] ("scsi: arcmsr: Remove
some set but unused variables") can be furthered to remove the entire
statement and not just the unused variable read into.
Snipped LKP report:
config: x86_64-randconfig-m001-20200719
compiler: gcc-9 (Debian 9.3.0-14) 9.3.0
New smatch warnings:
drivers/scsi/arcmsr/arcmsr_hba.c:1490 arcmsr_done4abort_postqueue() warn: statement has no effect 8
drivers/scsi/arcmsr/arcmsr_hba.c:2459 arcmsr_hbaD_postqueue_isr() warn: statement has no effect 8
drivers/scsi/arcmsr/arcmsr_hba.c:3526 arcmsr_hbaD_polling_ccbdone() warn: statement has no effect 8
1a4f550a09f89e Nick Cheng 2007-09-13 1401 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
1a4f550a09f89e Nick Cheng 2007-09-13 1402 {
[...]
18bc435e0a1de2 Lee Jones 2020-07-13 @1490 pmu->done_qbuffer[doneq_index & 0xFFF].addressHigh;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Delete this line.
[...]
Cc: support@xxxxxxxxxxxx
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
drivers/scsi/arcmsr/arcmsr_hba.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index 5feed135eb26c..23e9e12d588f6 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -1487,7 +1487,6 @@ static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
((toggle ^ 0x4000) + 1);
doneq_index = pmu->doneq_index;
spin_unlock_irqrestore(&acb->doneq_lock, flags);
- pmu->done_qbuffer[doneq_index & 0xFFF].addressHigh;
addressLow = pmu->done_qbuffer[doneq_index &
0xFFF].addressLow;
ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
@@ -2456,7 +2455,6 @@ static void arcmsr_hbaD_postqueue_isr(struct AdapterControlBlock *acb)
pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
((toggle ^ 0x4000) + 1);
doneq_index = pmu->doneq_index;
- pmu->done_qbuffer[doneq_index & 0xFFF].addressHigh;
addressLow = pmu->done_qbuffer[doneq_index &
0xFFF].addressLow;
ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
@@ -3523,7 +3521,6 @@ static int arcmsr_hbaD_polling_ccbdone(struct AdapterControlBlock *acb,
((toggle ^ 0x4000) + 1);
doneq_index = pmu->doneq_index;
spin_unlock_irqrestore(&acb->doneq_lock, flags);
- pmu->done_qbuffer[doneq_index & 0xFFF].addressHigh;
flag_ccb = pmu->done_qbuffer[doneq_index & 0xFFF].addressLow;
ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
if (acb->cdb_phyadd_hipart)
--
2.25.1
