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firewire: core: feed /dev/random with devices' GUIDs 

Send the GUIDs of newly registered controllers and devices
to the /dev/random driver to help seed its pools.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Clemens Ladisch 2012-08-13 09:08:41 +02:00 committed by Stefan Richter
parent 979570e029
commit badfcb2489
1 changed files with 3 additions and 0 deletions
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3
drivers/firewire/core-device.c
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@ -32,6 +32,7 @@
#include <linux/mod_devicetable.h> #include <linux/mod_devicetable.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/mutex.h> #include <linux/mutex.h>
#include <linux/random.h>
#include <linux/rwsem.h> #include <linux/rwsem.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
@ -1066,6 +1067,8 @@ static void fw_device_init(struct work_struct *work)
device->config_rom_retries = 0; device->config_rom_retries = 0;
set_broadcast_channel(device, device->generation); set_broadcast_channel(device, device->generation);
add_device_randomness(&device->config_rom[3], 8);
} }
/* /*