WARNING: please write a help paragraph that fully describes the config symbol with at least 4 lines
#29: FILE: block/Kconfig:212:
+config BLK_NVMEM
+	bool "Block device NVMEM provider"
+	depends on OF
+	depends on NVMEM
+	help
+	  Allow block devices (or partitions) to act as NVMEM providers,
+	  typically used with eMMC to store MAC addresses or Wi-Fi
+	  calibration data on embedded devices.
+

WARNING: line length of 82 exceeds 80 columns
#103: FILE: block/blk-nvmem.c:48:
+		folio = read_mapping_folio(bdev_file->f_mapping, f_index++, NULL);

total: 0 errors, 2 warnings, 0 checks, 183 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 65e28e40f44f ("block: implement NVMEM provider") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 2 warnings, 0 checks, 183 lines checked