From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932280Ab2HOT5u (ORCPT ); Wed, 15 Aug 2012 15:57:50 -0400 Received: from mail1.windriver.com ([147.11.146.13]:63171 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932193Ab2HOTw4 (ORCPT ); Wed, 15 Aug 2012 15:52:56 -0400 From: Paul Gortmaker To: , CC: "Theodore Ts'o" , Linus Torvalds , Paul Gortmaker Subject: [v2.6.34-stable 159/165] usb: feed USB device information to the /dev/random driver Date: Wed, 15 Aug 2012 15:48:23 -0400 Message-ID: <1345060109-9187-160-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 1.7.12.rc2 In-Reply-To: <1345060109-9187-1-git-send-email-paul.gortmaker@windriver.com> References: <1345060109-9187-1-git-send-email-paul.gortmaker@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Theodore Ts'o ------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. ------------------- commit b04b3156a20d395a7faa8eed98698d1e17a36000 upstream. Send the USB device's serial, product, and manufacturer strings to the /dev/random driver to help seed its pools. Cc: Linus Torvalds Acked-by: Greg KH Signed-off-by: "Theodore Ts'o" Signed-off-by: Paul Gortmaker --- drivers/usb/core/hub.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 40815d0..953269f 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -1827,6 +1828,14 @@ int usb_new_device(struct usb_device *udev) /* Tell the world! */ announce_device(udev); + if (udev->serial) + add_device_randomness(udev->serial, strlen(udev->serial)); + if (udev->product) + add_device_randomness(udev->product, strlen(udev->product)); + if (udev->manufacturer) + add_device_randomness(udev->manufacturer, + strlen(udev->manufacturer)); + device_enable_async_suspend(&udev->dev); /* Register the device. The device driver is responsible * for configuring the device and invoking the add-device -- 1.7.12.rc2