Hi Haojian,

FYI, kernel build failed on

tree:   git://github.com/hzhuang1/linux.git testing/88pm860x
head:   87111113a97218c173305b8f01ee7f8977b5d12d
commit: d65270f70ae9c24d17916ca30a4cc67b5018373c [24/31] mfd: max8925: use register offset as REG in backlight
config: i386-randconfig-b013 (attached as .config)

All related error/warning messages:

drivers/mfd/max8925-core.c: In function 'max8925_device_init':
drivers/mfd/max8925-core.c:626:10: error: too few arguments to function 'mfd_add_devices'
In file included from drivers/mfd/max8925-core.c:18:0:
include/linux/mfd/core.h:100:12: note: declared here

vim +626 drivers/mfd/max8925-core.c
   621		if (pdata && pdata->backlight) {
   622			bk_devs[0].platform_data = &pdata->backlight;
   623			bk_devs[0].pdata_size = sizeof(struct max8925_backlight_pdata);
   624		}
   625		ret = mfd_add_devices(chip->dev, 0, bk_devs, ARRAY_SIZE(bk_devs),
 > 626				      NULL, 0);
   627		if (ret < 0) {
   628			dev_err(chip->dev, "Failed to add backlight subdev\n");
   629			goto out_dev;
   630		}
   631	

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0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu, Yuanhan Liu                              Intel Corporation