On Mon, 26 Aug 2013, Xenia Ragiadakou wrote: > In usb_reset_and_verify_device(), hub_port_init() allocates a new bos > descriptor to hold the value read by the device. The new bos descriptor > has to be compared with the old one in order to figure out if device 's > firmware has changed in which case the device has to be reenumerated. > In the original code, none of the two descriptors was deallocated leading > to memory leaks. > > This patch compares the old bos descriptor with the new one to detect change > in firmware and releases the newly allocated bos descriptor to prevent memory > leak. > > Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx> > --- > > Differences from version 2: > > - fix identation > - initialize udev->bos to null so that check fails if bos is uninitialized > - move bos deallocation inside 'done' and 're_enumerate' paths to ensure > that the deallocation will be performed even if hub_port_init() fails > - remove check (!udev->wusb && le16_to_cpu(udev->descriptor.bcdUSB) >= 0x0201) > since the checks that follow suffice This looks good to me. Martin, can you verify that it fixes your kmemleak issue? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
