[PATCH] openprom: Add NULL check for pdev in oprompci2node()

[Chenyuan Yang]

Since pci_get_domain_bus_and_slot() can return NULL,
add NULL check for pdev in oprompci2node().

This change is similar to the fix implemented in commit 9af152dcf1a0
("drm/gma500: Add NULL check for pci_gfx_root in mid_get_vbt_data()").

Signed-off-by: Chenyuan Yang <chenyuan0y@xxxxxxxxx>
---
 drivers/sbus/char/openprom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/sbus/char/openprom.c b/drivers/sbus/char/openprom.c
index 8643947fee8e..e6f3082569fc 100644
--- a/drivers/sbus/char/openprom.c
+++ b/drivers/sbus/char/openprom.c
@@ -241,6 +241,8 @@ static int oprompci2node(void __user *argp, struct device_node *dp, struct openp
 		pdev = pci_get_domain_bus_and_slot(0,
 						((int *) op->oprom_array)[0],
 						((int *) op->oprom_array)[1]);
+		if (!pdev)
+			return -ENODEV;
 
 		dp = pci_device_to_OF_node(pdev);
 		data->current_node = dp;
-- 
2.34.1