commit: b04b3156a20d395a7faa8eed98698d1e17a36000 From: Theodore Ts'o <[email protected]> Date: Wed, 4 Jul 2012 11:22:20 -0400 Subject: usb: feed USB device information to the /dev/random driver
Send the USB device's serial, product, and manufacturer strings to the /dev/random driver to help seed its pools. Cc: Linus Torvalds <[email protected]> Acked-by: Greg KH <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]> Cc: [email protected] --- drivers/usb/core/hub.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) 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 <linux/kthread.h> #include <linux/mutex.h> #include <linux/freezer.h> +#include <linux/random.h> #include <asm/uaccess.h> #include <asm/byteorder.h> @@ -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); /* -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
