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

Jiasheng Jiang
2023-01-04T09:16:31Z

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

Fixes: 8b821cf76150 ("PCI: endpoint: Add EP function driver to provide NTB functionality")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
---
drivers/pci/endpoint/functions/pci-epf-ntb.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/pci/endpoint/functions/pci-epf-ntb.c b/drivers/pci/endpoint/functions/pci-epf-ntb.c
index 9a00448c7e61..304956bc0516 100644
--- a/drivers/pci/endpoint/functions/pci-epf-ntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-ntb.c
@@ -2124,6 +2124,9 @@ 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