[PATCH] PCI: endpoint: pci-epf-vntb: Add missing check for alloc_workqueue

Jiasheng Jiang
2023-01-04T09:08:28Z

Add check for the return value of alloc_workqueue since it may return
NULL pointer.

Fixes: e35f56bb0330 ("PCI: endpoint: Support NTB transfer between RC and EP")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
---
drivers/pci/endpoint/functions/pci-epf-vntb.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c
index 04698e7995a5..05c99185ba65 100644
--- a/drivers/pci/endpoint/functions/pci-epf-vntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c
@@ -1441,6 +1441,9 @@ static int __init epf_ntb_init(void)

kpcintb_workqueue = alloc_workqueue("kpcintb", WQ_MEM_RECLAIM |
WQ_HIGHPRI, 0);
+ if (!kpcintb_workqueue)
+ return -ENOMEM;
+
ret = pci_epf_register_driver(&epf_ntb_driver);
if (ret) {
destroy_workqueue(kpcintb_workqueue);
--
2.25.1