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

From: Stephen Rothwell <[email-masked]>
Date: Tue, 23 Jun 2020 13:51:34 +1000

Hi all,

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

net/core/devlink.c: In function 'devlink_nl_port_function_attrs_put':
net/core/devlink.c:586:3: warning: parameter names (without types) in function declaration
  586 |   int uninitialized_var(hw_addr_len);
      |   ^~~
net/core/devlink.c:589:65: error: 'hw_addr_len' undeclared (first use in this function); did you mean 'hw_addr'?
  589 |   err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
      |                                                                 ^~~~~~~~~~~
      |                                                                 hw_addr
net/core/devlink.c:589:65: note: each undeclared identifier is reported only once for each function it appears in

Caused by commit

  2e6d06799c15 ("compiler: Remove uninitialized_var() macro")

interacting with commit

  2a916ecc4056 ("net/devlink: Support querying hardware address of port function")

from the net-next tree.

I have added the following merge fix patch.

From: Stephen Rothwell <[email-masked]>
Date: Tue, 23 Jun 2020 13:43:06 +1000
Subject: [PATCH] net/core/devlink.c: remove new uninitialized_var() usage

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 net/core/devlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 455998a57671..6ae36808c152 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -583,7 +583,7 @@ devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *por
 
 	ops = devlink->ops;
 	if (ops->port_function_hw_addr_get) {
-		int uninitialized_var(hw_addr_len);
+		int hw_addr_len;
 		u8 hw_addr[MAX_ADDR_LEN];
 
 		err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
-- 
2.27.0

-- 
Cheers,
Stephen Rothwell