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Date:   Sun, 1 Jan 2017 07:45:47 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Luis Oliveira <Luis.Oliveira@...opsys.com>
Cc:     kbuild-all@...org, wsa@...-dreams.de, robh+dt@...nel.org,
        mark.rutland@....com, jarkko.nikula@...ux.intel.com,
        andriy.shevchenko@...ux.intel.com, mika.westerberg@...ux.intel.com,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Luis.Oliveira@...opsys.com,
        Ramiro.Oliveira@...opsys.com, Joao.Pinto@...opsys.com,
        CARLOS.PALMINHA@...opsys.com
Subject: Re: [PATCH v5 5/7] i2c: designware: add SLAVE mode functions

Hi Luis,

[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on v4.10-rc1 next-20161224]
[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/Luis-Oliveira/i2c-designware-Cleaning-and-comment-style-fixes/20161229-010120
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: i386-randconfig-c0-01010626 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/i2c/busses/i2c-designware-slave.c: In function 'i2c_dw_irq_handler_slave':
>> drivers/i2c/busses/i2c-designware-slave.c:293:3: error: implicit declaration of function 'i2c_slave_event' [-Werror=implicit-function-declaration]
      i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_REQUESTED, &val);
      ^
>> drivers/i2c/busses/i2c-designware-slave.c:293:31: error: 'I2C_SLAVE_WRITE_REQUESTED' undeclared (first use in this function)
      i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_REQUESTED, &val);
                                  ^
   drivers/i2c/busses/i2c-designware-slave.c:293:31: note: each undeclared identifier is reported only once for each function it appears in
   In file included from include/linux/err.h:4:0,
                    from drivers/i2c/busses/i2c-designware-slave.c:23:
>> drivers/i2c/busses/i2c-designware-slave.c:300:6: error: 'I2C_SLAVE_WRITE_RECEIVED' undeclared (first use in this function)
         I2C_SLAVE_WRITE_RECEIVED, &val)) {
         ^
   include/linux/compiler.h:149:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^
   drivers/i2c/busses/i2c-designware-slave.c:299:5: note: in expansion of macro 'if'
        if (!i2c_slave_event(dev->slave,
        ^
>> drivers/i2c/busses/i2c-designware-slave.c:312:7: error: 'I2C_SLAVE_READ_REQUESTED' undeclared (first use in this function)
          I2C_SLAVE_READ_REQUESTED, &val))
          ^
   include/linux/compiler.h:149:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^
   drivers/i2c/busses/i2c-designware-slave.c:311:4: note: in expansion of macro 'if'
       if (!i2c_slave_event(dev->slave,
       ^
>> drivers/i2c/busses/i2c-designware-slave.c:318:36: error: 'I2C_SLAVE_READ_PROCESSED' undeclared (first use in this function)
      if (!i2c_slave_event(dev->slave, I2C_SLAVE_READ_PROCESSED,
                                       ^
   include/linux/compiler.h:149:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^
   drivers/i2c/busses/i2c-designware-slave.c:318:3: note: in expansion of macro 'if'
      if (!i2c_slave_event(dev->slave, I2C_SLAVE_READ_PROCESSED,
      ^
>> drivers/i2c/busses/i2c-designware-slave.c:322:31: error: 'I2C_SLAVE_STOP' undeclared (first use in this function)
      i2c_slave_event(dev->slave, I2C_SLAVE_STOP, &val);
                                  ^
   drivers/i2c/busses/i2c-designware-slave.c: At top level:
>> drivers/i2c/busses/i2c-designware-slave.c:359:2: error: unknown field 'reg_slave' specified in initializer
     .reg_slave = i2c_dw_reg_slave,
     ^
   drivers/i2c/busses/i2c-designware-slave.c:359:2: warning: excess elements in struct initializer
   drivers/i2c/busses/i2c-designware-slave.c:359:2: warning: (near initialization for 'i2c_dw_algo')
>> drivers/i2c/busses/i2c-designware-slave.c:360:2: error: unknown field 'unreg_slave' specified in initializer
     .unreg_slave = i2c_dw_unreg_slave,
     ^
   drivers/i2c/busses/i2c-designware-slave.c:360:2: warning: excess elements in struct initializer
   drivers/i2c/busses/i2c-designware-slave.c:360:2: warning: (near initialization for 'i2c_dw_algo')
   cc1: some warnings being treated as errors

vim +/i2c_slave_event +293 drivers/i2c/busses/i2c-designware-slave.c

   287			dw_readl(dev, DW_IC_CLR_START_DET);
   288		if (stat & DW_IC_INTR_ACTIVITY)
   289			dw_readl(dev, DW_IC_CLR_ACTIVITY);
   290		if (stat & DW_IC_INTR_RX_OVER)
   291			dw_readl(dev, DW_IC_CLR_RX_OVER);
   292		if ((stat & DW_IC_INTR_RX_FULL) && (stat & DW_IC_INTR_STOP_DET))
 > 293			i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_REQUESTED, &val);
   294	
   295		if (slave_activity) {
   296			if (stat & DW_IC_INTR_RD_REQ) {
   297				if (stat & DW_IC_INTR_RX_FULL) {
   298					val = dw_readl(dev, DW_IC_DATA_CMD);
   299					if (!i2c_slave_event(dev->slave,
 > 300					 I2C_SLAVE_WRITE_RECEIVED, &val)) {
   301						dev_dbg(dev->dev, "Byte %X acked!",
   302						 val);
   303					}
   304					dw_readl(dev, DW_IC_CLR_RD_REQ);
   305					stat = i2c_dw_read_clear_intrbits_slave(dev);
   306				} else {
   307					dw_readl(dev, DW_IC_CLR_RD_REQ);
   308					dw_readl(dev, DW_IC_CLR_RX_UNDER);
   309					stat = i2c_dw_read_clear_intrbits_slave(dev);
   310				}
   311				if (!i2c_slave_event(dev->slave,
 > 312						 I2C_SLAVE_READ_REQUESTED, &val))
   313					dw_writel(dev, val, DW_IC_DATA_CMD);
   314			}
   315		}
   316	
   317		if (stat & DW_IC_INTR_RX_DONE) {
 > 318			if (!i2c_slave_event(dev->slave, I2C_SLAVE_READ_PROCESSED,
   319			 &val))
   320				dw_readl(dev, DW_IC_CLR_RX_DONE);
   321	
 > 322			i2c_slave_event(dev->slave, I2C_SLAVE_STOP, &val);
   323			stat = i2c_dw_read_clear_intrbits_slave(dev);
   324			return true;
   325		}
   326	
   327		if (stat & DW_IC_INTR_RX_FULL) {
   328			val = dw_readl(dev, DW_IC_DATA_CMD);
   329			if (!i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_RECEIVED,
   330			 &val))
   331				dev_dbg(dev->dev, "Byte %X acked!", val);
   332		} else {
   333			i2c_slave_event(dev->slave, I2C_SLAVE_STOP, &val);
   334			stat = i2c_dw_read_clear_intrbits_slave(dev);
   335		}
   336	
   337		if (stat & DW_IC_INTR_TX_OVER)
   338			dw_readl(dev, DW_IC_CLR_TX_OVER);
   339	
   340		return 1;
   341	}
   342	
   343	static irqreturn_t i2c_dw_isr_slave(int this_irq, void *dev_id)
   344	{
   345		struct dw_i2c_dev *dev = dev_id;
   346		int ret;
   347	
   348		i2c_dw_read_clear_intrbits_slave(dev);
   349		ret = i2c_dw_irq_handler_slave(dev);
   350	
   351		if (ret > 0)
   352			complete(&dev->cmd_complete);
   353	
   354		return IRQ_RETVAL(ret);
   355	}
   356	
   357	static struct i2c_algorithm i2c_dw_algo = {
   358		.functionality = i2c_dw_func,
 > 359		.reg_slave = i2c_dw_reg_slave,
 > 360		.unreg_slave = i2c_dw_unreg_slave,
   361	};
   362	
   363	void i2c_dw_disable_slave(struct dw_i2c_dev *dev)

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

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