Variable ret is reset in the loop, and its value will be 0 during the
after repeat of the loop. Then, if pci_alloc_consistent() returns NULL,
the return value is 0. 0 means no error, which may make it impossible
for the callers of beiscsi_create_cqs() to detect the memory allocation
error. This patch fixes the bug, assigning "-ENOMEM" to ret on the path
that the call to pci_alloc_consistent() fails.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188941
Signed-off-by: Pan Bian
---
drivers/scsi/be2iscsi/be_main.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index d9239c2..b6c5791 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -3113,8 +3113,10 @@ static int beiscsi_create_cqs(struct beiscsi_hba *phba,
cq_vaddress = pci_alloc_consistent(phba->pcidev,
num_cq_pages * PAGE_SIZE,
);
- if (!cq_vaddress)
+ if (!cq_vaddress) {
+ ret = -ENOMEM;
goto create_cq_error;
+ }
ret = be_fill_queue(cq, phba->params.num_cq_entries,
sizeof(struct sol_cqe), cq_vaddress);
--
1.9.1
--
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