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From: Arnd Bergmann <arnd@arndb.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Felipe Balbi <balbi@ti.com>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Arnd Bergmann <arnd@arndb.de>, Ben Dooks <ben-linux@fluff.org>,
	Kukjin Kim <kgene.kim@samsung.com>,
	linux-samsung-soc@vger.kernel.org
Subject: [PATCH 1/8] usb/gadget: s3c2410_udc: don't use pr_debug return value
Date: Thu,  8 May 2014 15:52:14 +0200	[thread overview]
Message-ID: <1399557141-1346645-2-git-send-email-arnd@arndb.de> (raw)
In-Reply-To: <1399557141-1346645-1-git-send-email-arnd@arndb.de>

pr_debug() may be defined as "do { } while (0)" in some configurations,
which means one cannot rely on the return value to be available.

In the dprintk function in this driver, we can work around the
resulting build error trivially by returning the length that
this function already knows and ignoring the return value of
pr_debug.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org
---
 drivers/usb/gadget/s3c2410_udc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index dd9678f..7987aa0 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -117,7 +117,8 @@ static int dprintk(int level, const char *fmt, ...)
 			sizeof(printk_buf)-len, fmt, args);
 	va_end(args);
 
-	return pr_debug("%s", printk_buf);
+	pr_debug("%s", printk_buf);
+	return len;
 }
 #else
 static int dprintk(int level, const char *fmt, ...)
-- 
1.8.3.2


  reply	other threads:[~2014-05-08 13:52 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-08 13:52 [PATCH 0/8] usb: various fixes for ARM randconfig failures Arnd Bergmann
2014-05-08 13:52 ` Arnd Bergmann [this message]
2014-05-08 13:52 ` [PATCH 2/8] usb: musb: tusb-dma can't be built-in if tusb is not Arnd Bergmann
2014-05-08 13:52 ` [PATCH 3/8] usb: musb: omap2plus bus glue needs USB host support Arnd Bergmann
2014-05-08 13:52 ` [PATCH 4/8] usb: phy: fix isp1301-omap dependency on tps65010 Arnd Bergmann
2014-05-13 15:26   ` Felipe Balbi
2014-05-13 19:48     ` Arnd Bergmann
2014-05-13 19:52       ` Felipe Balbi
2014-05-08 13:52 ` [PATCH 5/8] usb: phy: msm: reset controller is mandatory now Arnd Bergmann
2014-05-08 14:21   ` Ivan T. Ivanov
2014-05-08 14:27     ` Arnd Bergmann
2014-05-08 14:58       ` Ivan T. Ivanov
2014-05-13 15:27   ` Felipe Balbi
2014-05-08 13:52 ` [PATCH 6/8] usb: xhci: avoid warning for !PM_SLEEP Arnd Bergmann
2014-05-13 15:28   ` Felipe Balbi
2014-05-13 19:39     ` Arnd Bergmann
2014-05-13 19:52       ` Felipe Balbi
2014-05-08 13:52 ` [PATCH 7/8] usb: ohci: sort out dependencies for lpc32xx and omap Arnd Bergmann
2014-05-08 15:51   ` Alan Stern
2014-05-08 13:52 ` [PATCH 8/8] usb: ohci-da8xx can only be built-in Arnd Bergmann
2014-05-08 15:47   ` Alan Stern

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