From c442a0d18744d4a5857d513f171d68ed6a54df5b Mon Sep 17 00:00:00 2001
From: Saravana Kannan <saravanak@google.com>
Date: Sat, 21 Mar 2020 14:03:05 -0700
Subject: [PATCH] driver core: Set fw_devlink to "permissive" behavior by
default
Set fw_devlink to "permissive" behavior by default so that device links
are automatically created (with DL_FLAG_SYNC_STATE_ONLY) by scanning the
firmware.
This ensures suppliers get their sync_state() calls only after all their
consumers have probed successfully. Without this, suppliers will get
their sync_state() calls at late_initcall_sync() even if their consuer
Ideally, we'd want to set fw_devlink to "on" or "rpm" by default. But
that needs more testing as it's known to break some corner case
drivers/platforms.
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200321210305.28937-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/base/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 5e3cc1651c78c..9fabf9749a060 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -2345,7 +2345,7 @@ static int device_private_init(struct device *dev)
return 0;
}
-static u32 fw_devlink_flags;
+static u32 fw_devlink_flags = DL_FLAG_SYNC_STATE_ONLY;
static int __init fw_devlink_setup(char *arg)
{
if (!arg)
--
2.30.2