[PATCH 5.4 196/240] scsi: ipr: Fix missing/incorrect resource cleanup in error case

Greg Kroah-Hartman
2022-06-20T14:01:33Z

From: Chengguang Xu <cgxu519@mykernel.net>

[ Upstream commit d64c491911322af1dcada98e5b9ee0d87e8c8fee ]

Fix missing resource cleanup (when '(--i) == 0') for error case in
ipr_alloc_mem() and skip incorrect resource cleanup (when '(--i) == 0') for
error case in ipr_request_other_msi_irqs() because variable i started from
1.

Link: https://lore.kernel.org/r/20220529153456.4183738-4-cgxu519@mykernel.net
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/ipr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 7a57b61f0340..a163fd9331b3 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -9772,7 +9772,7 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
GFP_KERNEL);

if (!ioa_cfg->hrrq[i].host_rrq) {
- while (--i > 0)
+ while (--i >= 0)
dma_free_coherent(&pdev->dev,
sizeof(u32) * ioa_cfg->hrrq[i].size,
ioa_cfg->hrrq[i].host_rrq,
@@ -10045,7 +10045,7 @@ static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg,
ioa_cfg->vectors_info[i].desc,
&ioa_cfg->hrrq[i]);
if (rc) {
- while (--i >= 0)
+ while (--i > 0)
free_irq(pci_irq_vector(pdev, i),
&ioa_cfg->hrrq[i]);
return rc;
--
2.35.1