Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b04b3156 authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

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 <torvalds@linux-foundation.org>
Acked-by: default avatarGreg KH <greg@kroah.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
parent a2080a67

drivers/usb/core/hub.c

+9 −0
Original line number Diff line number Diff line
@@ -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);



	/*