WARNING: line length of 97 exceeds 80 columns
#179: FILE: drivers/mfd/nct6694.c:84:
+int nct6694_read_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf)

WARNING: line length of 98 exceeds 80 columns
#223: FILE: drivers/mfd/nct6694.c:128:
+int nct6694_write_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf)

WARNING: line length of 88 exceeds 80 columns
#385: FILE: drivers/mfd/nct6694.c:290:
+	nct6694->usb_msg = devm_kzalloc(dev, sizeof(union nct6694_usb_msg), GFP_KERNEL);

WARNING: line length of 81 exceeds 80 columns
#427: FILE: drivers/mfd/nct6694.c:332:
+	ret = mfd_add_hotplug_devices(dev, nct6694_dev, ARRAY_SIZE(nct6694_dev));

WARNING: line length of 98 exceeds 80 columns
#573: FILE: include/linux/mfd/nct6694.h:99:
+int nct6694_read_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf);

WARNING: line length of 99 exceeds 80 columns
#574: FILE: include/linux/mfd/nct6694.h:100:
+int nct6694_write_msg(struct nct6694 *nct6694, const struct nct6694_cmd_header *cmd_hd, void *buf);

total: 0 errors, 6 warnings, 0 checks, 520 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 889fcf53be29 ("mfd: Add core driver for Nuvoton NCT6694") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 6 warnings, 0 checks, 520 lines checked