linux-kernel - Re: [PATCH 2/2] hvc_xen: fix xenboot for DomUs

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Message-ID: <201602242008.Td9zQF7s%fengguang.wu@intel.com>
Date:	Wed, 24 Feb 2016 20:53:55 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	kbuild-all@...org, xen-devel@...ts.xensource.com,
	linux-kernel@...r.kernel.org, Stefano.Stabellini@...citrix.com,
	david.vrabel@...rix.com, konrad.wilk@...cle.com,
	boris.ostrovsky@...cle.com
Subject: Re: [PATCH 2/2] hvc_xen: fix xenboot for DomUs

Hi Stefano,

[auto build test WARNING on tty/tty-testing]
[also build test WARNING on v4.5-rc5 next-20160223]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Stefano-Stabellini/hvc_xen-add-earlycon-support/20160224-203006
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
config: x86_64-randconfig-x009-201608 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/tty/hvc/hvc_xen.c: In function 'xenboot_setup_console':
>> drivers/tty/hvc/hvc_xen.c:637:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +637 drivers/tty/hvc/hvc_xen.c

   621		}
   622		if (off < len)
   623			domU_write_console(0, string+off, len-off);
   624	}
   625	
   626	#ifdef CONFIG_EARLY_PRINTK
   627	static int xenboot_setup_console(struct console *console, char *string)
   628	{
   629		static struct xencons_info xenboot;
   630	
   631		if (xen_initial_domain())
   632			return 0;
   633		if (!xen_pv_domain())
   634			return -ENODEV;
   635	
   636		xen_early_pv_console_init(&xenboot, 0);
 > 637	}
   638	
   639	static void xenboot_write_console(struct console *console, const char *string,
   640					  unsigned len)
   641	{
   642		if (!xen_pv_domain())
   643			return;
   644	
   645		dom0_write_console(0, string, len);

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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