linux-kernel - linux-next: build failure after merge of the tip tree

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Date:   Fri, 27 Nov 2020 15:10:37 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the tip tree

Hi all,

After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
failed like this:

kernel/smp.c: In function 'csd_lock_wait_getcpu':
kernel/smp.c:133:13: error: 'call_single_data_t' {aka 'struct __call_single_data'} has no member named 'dst'
  133 |   return csd->dst; /* Other CSD_TYPE_ values might not have ->dst. */
      |             ^~

Caused by commit

  545b8c8df41f ("smp: Cleanup smp_call_function*()")

[interacting with commit

  35feb60474bf ("kernel/smp: Provide CSD lock timeout diagnostics")

from before v5.10-rc1]

I have applied the following patch for today:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Fri, 27 Nov 2020 15:04:00 +1100
Subject: [PATCH] smp: fix up "smp: Cleanup smp_call_function*()"

An instance if "dst" was missed.

Fixes: 545b8c8df41f ("smp: Cleanup smp_call_function*()")
Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 kernel/smp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/smp.c b/kernel/smp.c
index faf1a3ace6a9..1b6070bf97bb 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -130,7 +130,7 @@ static __always_inline int csd_lock_wait_getcpu(call_single_data_t *csd)
 
 	csd_type = CSD_TYPE(csd);
 	if (csd_type == CSD_TYPE_ASYNC || csd_type == CSD_TYPE_SYNC)
-		return csd->dst; /* Other CSD_TYPE_ values might not have ->dst. */
+		return csd->node.dst; /* Other CSD_TYPE_ values might not have ->dst. */
 	return -1;
 }
 
-- 
2.29.2

-- 
Cheers,
Stephen Rothwell

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