Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754804Ab2HMWM6 (ORCPT ); Mon, 13 Aug 2012 18:12:58 -0400 Received: from mail-yw0-f46.google.com ([209.85.213.46]:58152 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754693Ab2HMWEa (ORCPT ); Mon, 13 Aug 2012 18:04:30 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg KH , torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Greg KH , "Theodore Tso" Subject: [ 23/44] usb: feed USB device information to the /dev/random driver Date: Mon, 13 Aug 2012 15:02:30 -0700 Message-Id: <20120813220144.172382928@linuxfoundation.org> X-Mailer: git-send-email 1.7.10.1.362.g242cab3 In-Reply-To: <20120813220142.113186818@linuxfoundation.org> References: <20120813220142.113186818@linuxfoundation.org> User-Agent: quilt/0.60-20.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1674 Lines: 54 From: Greg KH 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Theodore Ts'o 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: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -1902,6 +1903,14 @@ int usb_new_device(struct usb_device *ud /* 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/