tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   fc6eabbbf8ef99efed778dd5afabc83c21dba585
commit: 25d47027e1003546bfd8964b4423cb39bc2d53e9 platform/x86: dell-smbios: Link all dell-smbios-* modules together
date:   4 days ago
config: x86_64-randconfig-s4-03140942 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 25d47027e1003546bfd8964b4423cb39bc2d53e9
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/platform/x86/dell-smbios-smm.o: In function `dell_smbios_smm_call':
>> drivers/platform/x86/dell-smbios-smm.c:99: undefined reference to `dcdbas_smi_request'

vim +99 drivers/platform/x86/dell-smbios-smm.c

549b4930 Mario Limonciello 2017-11-01   84  
549b4930 Mario Limonciello 2017-11-01   85  int dell_smbios_smm_call(struct calling_interface_buffer *input)
549b4930 Mario Limonciello 2017-11-01   86  {
549b4930 Mario Limonciello 2017-11-01   87  	struct smi_cmd command;
549b4930 Mario Limonciello 2017-11-01   88  	size_t size;
549b4930 Mario Limonciello 2017-11-01   89  
549b4930 Mario Limonciello 2017-11-01   90  	size = sizeof(struct calling_interface_buffer);
549b4930 Mario Limonciello 2017-11-01   91  	command.magic = SMI_CMD_MAGIC;
549b4930 Mario Limonciello 2017-11-01   92  	command.command_address = da_command_address;
549b4930 Mario Limonciello 2017-11-01   93  	command.command_code = da_command_code;
549b4930 Mario Limonciello 2017-11-01   94  	command.ebx = virt_to_phys(buffer);
549b4930 Mario Limonciello 2017-11-01   95  	command.ecx = 0x42534931;
549b4930 Mario Limonciello 2017-11-01   96  
549b4930 Mario Limonciello 2017-11-01   97  	mutex_lock(&smm_mutex);
549b4930 Mario Limonciello 2017-11-01   98  	memcpy(buffer, input, size);
549b4930 Mario Limonciello 2017-11-01  @99  	dcdbas_smi_request(&command);
549b4930 Mario Limonciello 2017-11-01  100  	memcpy(input, buffer, size);
549b4930 Mario Limonciello 2017-11-01  101  	mutex_unlock(&smm_mutex);
549b4930 Mario Limonciello 2017-11-01  102  	return 0;
549b4930 Mario Limonciello 2017-11-01  103  }
549b4930 Mario Limonciello 2017-11-01  104  

:::::: The code at line 99 was first introduced by commit
:::::: 549b4930f057658dc50d8010e66219233119a4d8 platform/x86: dell-smbios: Introduce dispatcher for SMM calls

:::::: TO: Mario Limonciello <mario.limonciello@dell.com>
:::::: CC: Darren Hart (VMware) <dvhart@infradead.org>

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