linux-kernel - [PATCH 5.10 281/717] powerpc/xmon: Fix build failure for 8xx

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Date:   Mon, 28 Dec 2020 13:44:39 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 281/717] powerpc/xmon: Fix build failure for 8xx

From: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>

[ Upstream commit f3e90408019b353fd1fcd338091fb8d3c4a1c1a5 ]

With CONFIG_PPC_8xx and CONFIG_XMON set, kernel build fails with

  arch/powerpc/xmon/xmon.c:1379:12: error: 'find_free_data_bpt' defined
  but not used [-Werror=unused-function]

Fix it by enclosing find_free_data_bpt() inside #ifndef CONFIG_PPC_8xx.

Fixes: 30df74d67d48 ("powerpc/watchpoint/xmon: Support 2nd DAWR")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Link: https://lore.kernel.org/r/20201130034406.288047-1-ravi.bangoria@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/powerpc/xmon/xmon.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 55c43a6c91112..5559edf36756c 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -1383,6 +1383,7 @@ static long check_bp_loc(unsigned long addr)
 	return 1;
 }
 
+#ifndef CONFIG_PPC_8xx
 static int find_free_data_bpt(void)
 {
 	int i;
@@ -1394,6 +1395,7 @@ static int find_free_data_bpt(void)
 	printf("Couldn't find free breakpoint register\n");
 	return -1;
 }
+#endif
 
 static void print_data_bpts(void)
 {
-- 
2.27.0