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Date:   Thu, 14 May 2020 14:52:23 -0400
From:   Sasha Levin <>
Cc:     Masahiro Yamada <>,
        Stephen Rothwell <>,
        Neil Horman <>,
        Sasha Levin <>,
Subject: [PATCH AUTOSEL 5.4 02/49] net: drop_monitor: use IS_REACHABLE() to guard net_dm_hw_report()

From: Masahiro Yamada <>

[ Upstream commit 1cd9b3abf5332102d4d967555e7ed861a75094bf ]

In net/Kconfig, NET_DEVLINK implies NET_DROP_MONITOR.

The original behavior of the 'imply' keyword prevents NET_DROP_MONITOR
from being 'm' when NET_DEVLINK=y.

With the planned Kconfig change that relaxes the 'imply', the
combination of NET_DEVLINK=y and NET_DROP_MONITOR=m would be allowed.

Use IS_REACHABLE() to avoid the vmlinux link error for this case.

Reported-by: Stephen Rothwell <>
Signed-off-by: Masahiro Yamada <>
Acked-by: Neil Horman <>
Signed-off-by: Sasha Levin <>
 include/net/drop_monitor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/drop_monitor.h b/include/net/drop_monitor.h
index 2ab668461463e..f68bc373544a9 100644
--- a/include/net/drop_monitor.h
+++ b/include/net/drop_monitor.h
@@ -19,7 +19,7 @@ struct net_dm_hw_metadata {
 	struct net_device *input_dev;
 void net_dm_hw_report(struct sk_buff *skb,
 		      const struct net_dm_hw_metadata *hw_metadata);

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