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From: Arnd Bergmann <>
Cc:, Arnd Bergmann <>,,
Subject: [PATCH 1/2] fbdev: omapfb: avoid -Wempty-body warning
Date: Mon, 22 Mar 2021 11:52:59 +0100
Message-ID: <> (raw)

From: Arnd Bergmann <>

Building with 'make W=1' shows a few harmless warnings:

drivers/video/fbdev/omap2/omapfb/omapfb-main.c: In function 'omapfb_calc_addr':
drivers/video/fbdev/omap2/omapfb/omapfb-main.c:823:56: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
  823 |                     var->xoffset, var->yoffset, offset);
      |                                                        ^
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c: In function 'omapfb_ioctl':
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:911:45: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
  911 |                 DBG("ioctl failed: %d\n", r);

Avoid these by using no_printk(), which adds format string checking as

Signed-off-by: Arnd Bergmann <>
 drivers/video/fbdev/omap2/omapfb/omapfb.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb.h b/drivers/video/fbdev/omap2/omapfb/omapfb.h
index d27abccb37bc..1c1b5201c8b6 100644
--- a/drivers/video/fbdev/omap2/omapfb/omapfb.h
+++ b/drivers/video/fbdev/omap2/omapfb/omapfb.h
@@ -29,7 +29,7 @@ extern bool omapfb_debug;
 			printk(KERN_DEBUG "OMAPFB: " format, ## __VA_ARGS__); \
 	} while (0)
-#define DBG(format, ...)
+#define DBG(format, ...) no_printk(format, ## __VA_ARGS__)
 #define FB2OFB(fb_info) ((struct omapfb_info *)(fb_info->par))

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-22 10:52 Arnd Bergmann [this message]
2021-03-22 15:05 ` Geert Uytterhoeven

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