Re: [PATCH v2 2/4] drm: Add drm_get_acpi_edid() helper

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Hi Mario,

kernel test robot noticed the following build errors:

[auto build test ERROR on rafael-pm/linux-next]
[also build test ERROR on rafael-pm/acpi-bus linus/master v6.8-rc2 next-20240131]
[cannot apply to drm-misc/drm-misc-next rafael-pm/devprop]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Mario-Limonciello/ACPI-video-Handle-fetching-EDID-that-is-longer-than-256-bytes/20240131-032909
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link:    https://lore.kernel.org/r/20240130192608.11666-3-mario.limonciello%40amd.com
patch subject: [PATCH v2 2/4] drm: Add drm_get_acpi_edid() helper
config: i386-buildonly-randconfig-002-20240131 (https://download.01.org/0day-ci/archive/20240131/202401311541.bDe2glWR-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240131/202401311541.bDe2glWR-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401311541.bDe2glWR-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/platform/x86/dell/dell-wmi-ddv.c:647:12: error: call to undeclared function 'acpi_device_uid'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     647 |         uid_str = acpi_device_uid(acpi_dev);
         |                   ^
>> drivers/platform/x86/dell/dell-wmi-ddv.c:647:10: error: incompatible integer to pointer conversion assigning to 'const char *' from 'int' [-Wint-conversion]
     647 |         uid_str = acpi_device_uid(acpi_dev);
         |                 ^ ~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/platform/x86/dell/dell-wmi-ddv.c:660:35: error: call to undeclared function 'to_acpi_device'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     660 |         ret = dell_wmi_ddv_battery_index(to_acpi_device(dev->parent), &index);
         |                                          ^
>> drivers/platform/x86/dell/dell-wmi-ddv.c:660:35: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'struct acpi_device *' [-Wint-conversion]
     660 |         ret = dell_wmi_ddv_battery_index(to_acpi_device(dev->parent), &index);
         |                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/platform/x86/dell/dell-wmi-ddv.c:643:59: note: passing argument to parameter 'acpi_dev' here
     643 | static int dell_wmi_ddv_battery_index(struct acpi_device *acpi_dev, u32 *index)
         |                                                           ^
   drivers/platform/x86/dell/dell-wmi-ddv.c:679:35: error: call to undeclared function 'to_acpi_device'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     679 |         ret = dell_wmi_ddv_battery_index(to_acpi_device(dev->parent), &index);
         |                                          ^
   drivers/platform/x86/dell/dell-wmi-ddv.c:679:35: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'struct acpi_device *' [-Wint-conversion]
     679 |         ret = dell_wmi_ddv_battery_index(to_acpi_device(dev->parent), &index);
         |                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/platform/x86/dell/dell-wmi-ddv.c:643:59: note: passing argument to parameter 'acpi_dev' here
     643 | static int dell_wmi_ddv_battery_index(struct acpi_device *acpi_dev, u32 *index)
         |                                                           ^
   drivers/platform/x86/dell/dell-wmi-ddv.c:705:35: error: call to undeclared function 'to_acpi_device'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     705 |         ret = dell_wmi_ddv_battery_index(to_acpi_device(battery->dev.parent), &index);
         |                                          ^
   drivers/platform/x86/dell/dell-wmi-ddv.c:705:35: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'struct acpi_device *' [-Wint-conversion]
     705 |         ret = dell_wmi_ddv_battery_index(to_acpi_device(battery->dev.parent), &index);
         |                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/platform/x86/dell/dell-wmi-ddv.c:643:59: note: passing argument to parameter 'acpi_dev' here
     643 | static int dell_wmi_ddv_battery_index(struct acpi_device *acpi_dev, u32 *index)
         |                                                           ^
   8 errors generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for ACPI_WMI
   Depends on [n]: X86_PLATFORM_DEVICES [=y] && ACPI [=n]
   Selected by [m]:
   - DRM [=m] && HAS_IOMEM [=y] && (AGP [=n] || AGP [=n]=n) && !EMULATED_CMPXCHG && HAS_DMA [=y] && X86 [=y]


vim +660 drivers/platform/x86/dell/dell-wmi-ddv.c

3b7eeff93d2912 Armin Wolf 2023-02-09  642  
a77272c1604186 Armin Wolf 2022-09-27  643  static int dell_wmi_ddv_battery_index(struct acpi_device *acpi_dev, u32 *index)
a77272c1604186 Armin Wolf 2022-09-27  644  {
a77272c1604186 Armin Wolf 2022-09-27  645  	const char *uid_str;
a77272c1604186 Armin Wolf 2022-09-27  646  
a77272c1604186 Armin Wolf 2022-09-27 @647  	uid_str = acpi_device_uid(acpi_dev);
a77272c1604186 Armin Wolf 2022-09-27  648  	if (!uid_str)
a77272c1604186 Armin Wolf 2022-09-27  649  		return -ENODEV;
a77272c1604186 Armin Wolf 2022-09-27  650  
a77272c1604186 Armin Wolf 2022-09-27  651  	return kstrtou32(uid_str, 10, index);
a77272c1604186 Armin Wolf 2022-09-27  652  }
a77272c1604186 Armin Wolf 2022-09-27  653  
a77272c1604186 Armin Wolf 2022-09-27  654  static ssize_t temp_show(struct device *dev, struct device_attribute *attr, char *buf)
a77272c1604186 Armin Wolf 2022-09-27  655  {
a77272c1604186 Armin Wolf 2022-09-27  656  	struct dell_wmi_ddv_data *data = container_of(attr, struct dell_wmi_ddv_data, temp_attr);
a77272c1604186 Armin Wolf 2022-09-27  657  	u32 index, value;
a77272c1604186 Armin Wolf 2022-09-27  658  	int ret;
a77272c1604186 Armin Wolf 2022-09-27  659  
a77272c1604186 Armin Wolf 2022-09-27 @660  	ret = dell_wmi_ddv_battery_index(to_acpi_device(dev->parent), &index);
a77272c1604186 Armin Wolf 2022-09-27  661  	if (ret < 0)
a77272c1604186 Armin Wolf 2022-09-27  662  		return ret;
a77272c1604186 Armin Wolf 2022-09-27  663  
a77272c1604186 Armin Wolf 2022-09-27  664  	ret = dell_wmi_ddv_query_integer(data->wdev, DELL_DDV_BATTERY_TEMPERATURE, index, &value);
a77272c1604186 Armin Wolf 2022-09-27  665  	if (ret < 0)
a77272c1604186 Armin Wolf 2022-09-27  666  		return ret;
a77272c1604186 Armin Wolf 2022-09-27  667  
0331b1b0ba6537 Armin Wolf 2023-02-18  668  	/* Use 2731 instead of 2731.5 to avoid unnecessary rounding */
0331b1b0ba6537 Armin Wolf 2023-02-18  669  	return sysfs_emit(buf, "%d\n", value - 2731);
a77272c1604186 Armin Wolf 2022-09-27  670  }
a77272c1604186 Armin Wolf 2022-09-27  671  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki



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