From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Theodore Ts'o To: Linux Kernel Developers List Cc: ewust@umich.edu, zakir@umich.edu, nadiah@cs.ucsd.edu, jhalderm@umich.edu, Theodore Ts'o , Linus Torvalds , stable@vger.kernel.org Subject: [PATCH 05/12] usb: feed USB device information to the /dev/random driver Date: Fri, 6 Jul 2012 18:44:57 -0400 Message-Id: <1341614704-24965-6-git-send-email-tytso@mit.edu> In-Reply-To: <1341614704-24965-1-git-send-email-tytso@mit.edu> References: <1341614704-24965-1-git-send-email-tytso@mit.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: 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" Cc: stable@vger.kernel.org --- 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 25a7422..7f380ff 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -2173,6 +2174,14 @@ 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); /* -- 1.7.11.1.108.gb129051