Re: [PATCH v4 4/5] i2c: designware: Add slave mode as separated driver

[kbuild test robot <lkp@intel.com>]

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Hi Luis,

[auto build test WARNING on wsa/i2c/for-next]
[also build test WARNING on next-20161207]
[cannot apply to v4.9-rc8]
[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-Refactoring-of-the-i2c-designware/20161208-044045
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: i386-randconfig-h0-12081126 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (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:294:3: 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:294:31: 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:294:31: 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:26:
   drivers/i2c/busses/i2c-designware-slave.c:301:6: 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:300:5: note: in expansion of macro 'if'
        if (!i2c_slave_event(dev->slave,
        ^~
   drivers/i2c/busses/i2c-designware-slave.c:313:7: 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:312:4: note: in expansion of macro 'if'
       if (!i2c_slave_event(dev->slave,
       ^~
   drivers/i2c/busses/i2c-designware-slave.c:319:36: 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:319:3: note: in expansion of macro 'if'
      if (!i2c_slave_event(dev->slave, I2C_SLAVE_READ_PROCESSED,
      ^~
   drivers/i2c/busses/i2c-designware-slave.c:323:31: 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:358:2: error: unknown field 'reg_slave' specified in initializer
     .reg_slave = i2c_dw_reg_slave,
     ^
   drivers/i2c/busses/i2c-designware-slave.c:358:15: warning: excess elements in struct initializer
     .reg_slave = i2c_dw_reg_slave,
                  ^~~~~~~~~~~~~~~~
   drivers/i2c/busses/i2c-designware-slave.c:358:15: note: (near initialization for 'i2c_dw_algo')
   drivers/i2c/busses/i2c-designware-slave.c:359:2: error: unknown field 'unreg_slave' specified in initializer
     .unreg_slave = i2c_dw_unreg_slave,
     ^
   drivers/i2c/busses/i2c-designware-slave.c:359:17: warning: excess elements in struct initializer
     .unreg_slave = i2c_dw_unreg_slave,
                    ^~~~~~~~~~~~~~~~~~
   drivers/i2c/busses/i2c-designware-slave.c:359:17: note: (near initialization for 'i2c_dw_algo')
   cc1: some warnings being treated as errors

vim +/if +300 drivers/i2c/busses/i2c-designware-slave.c

   288			dw_readl(dev, DW_IC_CLR_START_DET);
   289		if (stat & DW_IC_INTR_ACTIVITY)
   290			dw_readl(dev, DW_IC_CLR_ACTIVITY);
   291		if (stat & DW_IC_INTR_RX_OVER)
   292			dw_readl(dev, DW_IC_CLR_RX_OVER);
   293		if ((stat & DW_IC_INTR_RX_FULL) && (stat & DW_IC_INTR_STOP_DET))
 > 294			i2c_slave_event(dev->slave, I2C_SLAVE_WRITE_REQUESTED, &val);
   295	
   296		if (slave_activity) {
   297			if (stat & DW_IC_INTR_RD_REQ) {
   298				if (stat & DW_IC_INTR_RX_FULL) {
   299					val = dw_readl(dev, DW_IC_DATA_CMD);
 > 300					if (!i2c_slave_event(dev->slave,
   301					 I2C_SLAVE_WRITE_RECEIVED, &val)) {
   302						dev_dbg(dev->dev, "Byte %X acked!",
   303						 val);

---
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