In case the controller is not initialized, we shall not de-initialize it.
As the control structure will not be filled, we will produce a null ptr
dereference if the controller is not inited.
Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Simon Glass <s...@chromium.org>
---
drivers/usb/host/ehci-hcd.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 8bd1eb8..3ef204d 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -201,6 +201,9 @@ static int ehci_shutdown(struct ehci_ctrl *ctrl)
int i, ret = 0;
uint32_t cmd, reg;
+ if (!ctrl || !ctrl->hcor)
+ return -EINVAL;
+
cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
cmd &= ~(CMD_PSE | CMD_ASE);
ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
--
1.8.4.3
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