Add check for pci_find_ext_capability() and return the error if it
fails in order to transfer the error.
Fixes: 6c6dd5802c2d ("crypto: hisilicon/qm - add controller reset interface")
Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
---
drivers/crypto/hisilicon/qm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 18599f3634c3..adbab1286d4a 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3967,6 +3967,9 @@ static int qm_set_vf_mse(struct hisi_qm *qm, bool set)
int i;
pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
+ if (!pos)
+ return -ENODEV;
+
pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &sriov_ctrl);
if (set)
sriov_ctrl |= PCI_SRIOV_CTRL_MSE;
--
2.25.1
