[PATCH 07/18] thunderbolt: Use pseudo-random number as initial property block generation

[Mika Westerberg]

As recommended by USB4 inter-domain service spec use pseudo-random value
instead of zero as initial XDomain property block generation value.

Signed-off-by: Mika Westerberg <mika.westerb...@linux.intel.com>
---
 drivers/thunderbolt/xdomain.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c
index a1657663a95e..cfe6fa7e84f4 100644
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -12,6 +12,7 @@
 #include <linux/kmod.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
+#include <linux/prandom.h>
 #include <linux/utsname.h>
 #include <linux/uuid.h>
 #include <linux/workqueue.h>
@@ -1880,6 +1881,7 @@ int tb_xdomain_init(void)
        tb_property_add_immediate(xdomain_property_dir, "deviceid", 0x1);
        tb_property_add_immediate(xdomain_property_dir, "devicerv", 0x80000100);
 
+       xdomain_property_block_gen = prandom_u32();
        return 0;
 }
 
-- 
2.30.1