[PATCH 4.19 270/323] usb: host: ohci-tmio: check return value after calling platform_get_resource()

[Greg Kroah-Hartman]

From: Yang Yingliang <yangyingliang@xxxxxxxxxx>

[ Upstream commit 9eff2b2e59fda25051ab36cd1cb5014661df657b ]

It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20211011134920.118477-1-yangyingliang@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/usb/host/ohci-tmio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
index 983a00e2988dc..702d78e0d903a 100644
--- a/drivers/usb/host/ohci-tmio.c
+++ b/drivers/usb/host/ohci-tmio.c
@@ -196,7 +196,7 @@ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev)
 	if (usb_disabled())
 		return -ENODEV;
 
-	if (!cell)
+	if (!cell || !regs || !config || !sram)
 		return -EINVAL;
 
 	if (irq < 0)
-- 
2.33.0