Subject: linux-next: build failure after merge of the net-next tree

From: Stephen Rothwell <[email-masked]>
Date: Tue, 24 Jan 2023 10:02:49 +1100

Hi all,

After merging the net-next tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

In file included from net/ethtool/netlink.c:6:
net/ethtool/netlink.h:177:20: error: redefinition of 'ethnl_update_bool'
  177 | static inline void ethnl_update_bool(bool *dst, const struct nlattr *attr,
      |                    ^~~~~~~~~~~~~~~~~
net/ethtool/netlink.h:125:20: note: previous definition of 'ethnl_update_bool' with type 'void(bool *, const struct nlattr *, bool *)' {aka 'void(_Bool *, const struct nlattr *, _Bool *)'}
  125 | static inline void ethnl_update_bool(bool *dst, const struct nlattr *attr,
      |                    ^~~~~~~~~~~~~~~~~

Caused by commit

  dc0b98a1758f ("ethtool: Add and use ethnl_update_bool.")

merging badly with commit

  7c494a7749a7 ("net: ethtool: netlink: introduce ethnl_update_bool()")

from the net tree.

I applied the following merge fix up.

From: Stephen Rothwell <[email-masked]>
Date: Tue, 24 Jan 2023 09:58:16 +1100
Subject: [PATCH] fix up for "ethtool: Add and use ethnl_update_bool."

interacting with "net: ethtool: netlink: introduce ethnl_update_bool()"

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 net/ethtool/netlink.h | 26 --------------------------
 1 file changed, 26 deletions(-)

diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h
index 4992fab0d06b..b01f7cd542c4 100644
--- a/net/ethtool/netlink.h
+++ b/net/ethtool/netlink.h
@@ -111,32 +111,6 @@ static inline void ethnl_update_u8(u8 *dst, const struct nlattr *attr,
 	*mod = true;
 }
 
-/**
- * ethnl_update_bool() - update bool from NLA_U8 attribute
- * @dst:  value to update
- * @attr: netlink attribute with new value or null
- * @mod:  pointer to bool for modification tracking
- *
- * Use the u8 value from NLA_U8 netlink attribute @attr to set bool variable
- * pointed to by @dst to false (if zero) or 1 (if not); do nothing if @attr is
- * null. Bool pointed to by @mod is set to true if this function changed the
- * logical value of *dst, otherwise it is left as is.
- */
-static inline void ethnl_update_bool(bool *dst, const struct nlattr *attr,
-				     bool *mod)
-{
-	u8 val;
-
-	if (!attr)
-		return;
-	val = !!nla_get_u8(attr);
-	if (*dst == val)
-		return;
-
-	*dst = val;
-	*mod = true;
-}
-
 /**
  * ethnl_update_bool32() - update u32 used as bool from NLA_U8 attribute
  * @dst:  value to update
-- 
2.35.1

-- 
Cheers,
Stephen Rothwell