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

Message ID 20210304123125.43630-8-mika.westerberg@linux.intel.com (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series thunderbolt: Align with USB4 inter-domain and DROM specs | expand

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netdev/stable success Stable not CCed

Commit Message

Mika Westerberg March 4, 2021, 12:31 p.m. UTC
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.westerberg@linux.intel.com>
---
 drivers/thunderbolt/xdomain.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

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;
 }