linux-kernel - Re: [PATCH v6 4/5] crypto: LRNG

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Date:	Thu, 11 Aug 2016 21:50:15 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Stephan Mueller <smueller@...onox.de>
Cc:	kbuild-all@...org, herbert@...dor.apana.org.au,
	Ted Tso <tytso@....edu>, sandyinchina@...il.com,
	Jason Cooper <cryptography@...edaemon.net>,
	John Denker <jsd@...n.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Joe Perches <joe@...ches.com>, Pavel Machek <pavel@....cz>,
	George Spelvin <linux@...izon.com>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 4/5] crypto: LRNG - enable compile

Hi Stephan,

[auto build test ERROR on cryptodev/master]
[also build test ERROR on v4.8-rc1]
[cannot apply to next-20160811]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Stephan-Mueller/crypto-DRBG-externalize-DRBG-functions-for-LRNG/20160811-203346
base:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
config: tile-allyesconfig (attached as .config)
compiler: tilegx-linux-gcc (GCC) 4.6.2
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=tile 

All error/warnings (new ones prefixed by >>):

   crypto/lrng_base.c: In function 'add_interrupt_randomness':
>> crypto/lrng_base.c:583:10: error: implicit declaration of function 'get_irq_regs'
>> crypto/lrng_base.c:583:26: warning: initialization makes pointer from integer without a cast [enabled by default]
   cc1: some warnings being treated as errors

vim +/get_irq_regs +583 crypto/lrng_base.c

22708393 Stephan Mueller 2016-08-11  567  }
22708393 Stephan Mueller 2016-08-11  568  
22708393 Stephan Mueller 2016-08-11  569  /**
22708393 Stephan Mueller 2016-08-11  570   * Hot code path - Callback for interrupt handler
22708393 Stephan Mueller 2016-08-11  571   */
22708393 Stephan Mueller 2016-08-11  572  void add_interrupt_randomness(int irq, int irq_flags)
22708393 Stephan Mueller 2016-08-11  573  {
22708393 Stephan Mueller 2016-08-11  574  	u32 now_time = random_get_entropy();
22708393 Stephan Mueller 2016-08-11  575  	struct lrng_irq_info *irq_info = &lrng_pool.irq_info;
22708393 Stephan Mueller 2016-08-11  576  	u32 irq_num = (u32)atomic_add_return(1, &irq_info->num_events);
22708393 Stephan Mueller 2016-08-11  577  
22708393 Stephan Mueller 2016-08-11  578  	if (lrng_pool.irq_info.irq_highres_timer) {
22708393 Stephan Mueller 2016-08-11  579  		if (lrng_irq_stuck(irq_info, now_time))
22708393 Stephan Mueller 2016-08-11  580  			return;
22708393 Stephan Mueller 2016-08-11  581  		lrng_pool_mixin((u8 *)&now_time, sizeof(now_time), irq_num);
22708393 Stephan Mueller 2016-08-11  582  	} else {
22708393 Stephan Mueller 2016-08-11 @583  		struct pt_regs *regs = get_irq_regs();
22708393 Stephan Mueller 2016-08-11  584  		static atomic_t reg_idx = ATOMIC_INIT(0);
22708393 Stephan Mueller 2016-08-11  585  
22708393 Stephan Mueller 2016-08-11  586  		struct {
22708393 Stephan Mueller 2016-08-11  587  			long jiffies;
22708393 Stephan Mueller 2016-08-11  588  			int irq;
22708393 Stephan Mueller 2016-08-11  589  			int irq_flags;
22708393 Stephan Mueller 2016-08-11  590  			u64 ip;
22708393 Stephan Mueller 2016-08-11  591  			u32 curr_reg;

:::::: The code at line 583 was first introduced by commit
:::::: 227083931f3541c5430b40241419b56057555033 crypto: Linux Random Number Generator

:::::: TO: Stephan Mueller <smueller@...onox.de>
:::::: CC: 0day robot <fengguang.wu@...el.com>

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