linux-kernel - [PATCH 1/2] aic94xx: avoid -Wempty-body warning

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Date:   Mon, 22 Mar 2021 11:25:43 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Arnd Bergmann <arnd@...db.de>, YueHaibing <yuehaibing@...wei.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] aic94xx: avoid -Wempty-body warning

From: Arnd Bergmann <arnd@...db.de>

Building with 'make W=1' shows a harmless -Wempty-body warning:

drivers/scsi/aic94xx/aic94xx_init.c: In function 'asd_free_queues':
drivers/scsi/aic94xx/aic94xx_init.c:858:62: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
  858 |                 ASD_DPRINTK("Uh-oh! Pending is not empty!\n");

Change the empty ASD_DPRINTK() macro to no_printk(), which avoids this
warning and adds format string checking.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/scsi/aic94xx/aic94xx.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/aic94xx/aic94xx.h b/drivers/scsi/aic94xx/aic94xx.h
index 98978bc199ff..8f24180646c2 100644
--- a/drivers/scsi/aic94xx/aic94xx.h
+++ b/drivers/scsi/aic94xx/aic94xx.h
@@ -33,7 +33,7 @@
 #ifdef ASD_DEBUG
 #define ASD_DPRINTK asd_printk
 #else
-#define ASD_DPRINTK(fmt, ...)
+#define ASD_DPRINTK(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
 #endif

 /* 2*ITNL timeout + 1 second */
-- 
2.29.2