This patch is to add a check of "portnum" which from the usb
port dev's name. The "portnum" will be used as array index
for struct usb_hub->ports in the usb_set_hub_port_connect_type().
Signed-off-by: Lan Tianyu <tianyu....@intel.com>
---
drivers/usb/core/usb-acpi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index 255c144..ec0e7cf 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -183,6 +183,9 @@ static int usb_acpi_find_device(struct device *dev,
acpi_handle *handle)
/* Get the struct usb_device point of port's hub */
udev = to_usb_device(dev->parent->parent);
+ if (port_num == 0 || port_num > udev->maxchild)
+ return -EINVAL;
+
/*
* The root hub ports' parent is the root hub. The non-root-hub
* ports' parent is the parent hub port which the hub is
--
1.7.10.4
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