linux-kernel - [PATCH] EDAC, pnd2_edac: fix build error without CONFIG_EDAC

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Date:   Thu, 23 Mar 2017 16:16:35 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Tony Luck <tony.luck@...el.com>, Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Qiuxu Zhuo <qiuxu.zhuo@...el.com>,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] EDAC, pnd2_edac: fix build error without CONFIG_EDAC_DEBUG

Calling into functions inside of the #ifdef causes an obvious compile error:

drivers/edac/pnd2_edac.c: In function 'pnd2_init':
drivers/edac/pnd2_edac.c:1521:2: error: implicit declaration of function 'setup_pnd2_debug'; did you mean 'setup_log_buf'? [-Werror=implicit-function-declaration]
drivers/edac/pnd2_edac.c: In function 'pnd2_exit':
drivers/edac/pnd2_edac.c:1529:2: error: implicit declaration of function 'teardown_pnd2_debug' [-Werror=implicit-function-declaration]

This removes the #ifdef and instead uses an equivalent IS_ENABLED() check
so the compiler can silently drop the functions but still build-test them
and not need an #ifdef.

Fixes: 5c71ad17f97e ("EDAC, pnd2_edac: Add new EDAC driver for Intel SoC platforms")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/edac/pnd2_edac.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c
index 14d39f05226e..25693a4c14c3 100644
--- a/drivers/edac/pnd2_edac.c
+++ b/drivers/edac/pnd2_edac.c
@@ -1389,7 +1389,6 @@ static struct notifier_block pnd2_mce_dec = {
 	.notifier_call	= pnd2_mce_check_error,
 };
 
-#ifdef CONFIG_EDAC_DEBUG
 /*
  * Write an address to this file to exercise the address decode
  * logic in this driver.
@@ -1435,7 +1434,6 @@ static void teardown_pnd2_debug(void)
 {
 	debugfs_remove_recursive(pnd2_test);
 }
-#endif
 
 static int pnd2_probe(void)
 {
@@ -1518,7 +1516,8 @@ static int __init pnd2_init(void)
 		return -ENODEV;
 
 	mce_register_decode_chain(&pnd2_mce_dec);
-	setup_pnd2_debug();
+	if (IS_ENABLED(CONFIG_EDAC_DEBUG))
+		setup_pnd2_debug();
 
 	return 0;
 }
@@ -1526,7 +1525,8 @@ static int __init pnd2_init(void)
 static void __exit pnd2_exit(void)
 {
 	edac_dbg(2, "\n");
-	teardown_pnd2_debug();
+	if (IS_ENABLED(CONFIG_EDAC_DEBUG))
+		teardown_pnd2_debug();
 	mce_unregister_decode_chain(&pnd2_mce_dec);
 	pnd2_remove();
 }
-- 
2.9.0