Re: [PATCH v9 2/2] fpga: lattice machxo2: Add Lattice MachXO2 support

[kbuild test robot <lkp@xxxxxxxxx>]

Hi Paolo,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16 next-20180329]
[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/Paolo-Pisati/fpga-Lattice-MachXO2-Slave-SPI-FPGA-Manager-support/20180403-000300
config: i386-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

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

   drivers/fpga/machxo2-spi.c: In function 'machxo2_spi_probe':
>> drivers/fpga/machxo2-spi.c:361:5: error: 'struct fpga_manager' has no member named 'parent'
     mgr->parent = dev;
        ^~
>> drivers/fpga/machxo2-spi.c:367:27: error: passing argument 1 of 'fpga_mgr_register' from incompatible pointer type [-Werror=incompatible-pointer-types]
     return fpga_mgr_register(mgr);
                              ^~~
   In file included from drivers/fpga/machxo2-spi.c:12:0:
   include/linux/fpga/fpga-mgr.h:173:5: note: expected 'struct device *' but argument is of type 'struct fpga_manager *'
    int fpga_mgr_register(struct device *dev, const char *name,
        ^~~~~~~~~~~~~~~~~
>> drivers/fpga/machxo2-spi.c:367:9: error: too few arguments to function 'fpga_mgr_register'
     return fpga_mgr_register(mgr);
            ^~~~~~~~~~~~~~~~~
   In file included from drivers/fpga/machxo2-spi.c:12:0:
   include/linux/fpga/fpga-mgr.h:173:5: note: declared here
    int fpga_mgr_register(struct device *dev, const char *name,
        ^~~~~~~~~~~~~~~~~
   drivers/fpga/machxo2-spi.c: In function 'machxo2_spi_remove':
>> drivers/fpga/machxo2-spi.c:374:22: error: passing argument 1 of 'fpga_mgr_unregister' from incompatible pointer type [-Werror=incompatible-pointer-types]
     fpga_mgr_unregister(mgr);
                         ^~~
   In file included from drivers/fpga/machxo2-spi.c:12:0:
   include/linux/fpga/fpga-mgr.h:176:6: note: expected 'struct device *' but argument is of type 'struct fpga_manager *'
    void fpga_mgr_unregister(struct device *dev);
         ^~~~~~~~~~~~~~~~~~~
   drivers/fpga/machxo2-spi.c: In function 'machxo2_spi_probe':
>> drivers/fpga/machxo2-spi.c:368:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
   cc1: some warnings being treated as errors

vim +361 drivers/fpga/machxo2-spi.c

   346	
   347	static int machxo2_spi_probe(struct spi_device *spi)
   348	{
   349		struct device *dev = &spi->dev;
   350		struct fpga_manager *mgr;
   351	
   352		if (spi->max_speed_hz > MACHXO2_MAX_SPEED) {
   353			dev_err(dev, "Speed is too high\n");
   354			return -EINVAL;
   355		}
   356	
   357		mgr = devm_kzalloc(dev, sizeof(*mgr), GFP_KERNEL);
   358		if (!mgr)
   359			return -ENOMEM;
   360	
 > 361		mgr->parent = dev;
   362		mgr->name = "Lattice MachXO2 SPI FPGA Manager";
   363		mgr->mops = &machxo2_ops;
   364		mgr->priv = spi;
   365		spi_set_drvdata(spi, mgr);
   366	
 > 367		return fpga_mgr_register(mgr);
 > 368	}
   369	
   370	static int machxo2_spi_remove(struct spi_device *spi)
   371	{
   372		struct fpga_manager *mgr = spi_get_drvdata(spi);
   373	
 > 374		fpga_mgr_unregister(mgr);
   375	
   376		return 0;
   377	}
   378	

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