USB: dynamically allocate usb_device children pointers instead of using a fix array

Non-hub device has no child, and even a real USB hub has ports far
less than USB_MAXCHILDREN, so there is no need using a fix array for
child devices, just allocate it dynamically according real port
number.

Signed-off-by: Huajun Li <huajun.li.lee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 0c51663f2733..73b68d1f2cb0 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -501,7 +501,7 @@ struct usb_device {
 #endif
 
         int maxchild;
-        struct usb_device *children[USB_MAXCHILDREN];
+        struct usb_device **children;
 
         u32 quirks;
         atomic_t urbnum;