ERROR: Macros with multiple statements should be enclosed in a do - while loop
#94: FILE: include/linux/packing.h:29:
+#define GEN_PACKED_FIELD_MEMBERS(__type) \
+	__type startbit; \
+	__type endbit; \
+	__type offset; \
+	__type size;

WARNING: macros should not use a trailing semicolon
#94: FILE: include/linux/packing.h:29:
+#define GEN_PACKED_FIELD_MEMBERS(__type) \
+	__type startbit; \
+	__type endbit; \
+	__type offset; \
+	__type size;

WARNING: line length of 90 exceeds 80 columns
#127: FILE: include/linux/packing.h:62:
+	BUILD_BUG_ON(__f.size != 1 && __f.size != 2 && __f.size != 4 && __f.size != 8); })

WARNING: line length of 89 exceeds 80 columns
#131: FILE: include/linux/packing.h:66:
+	BUILD_BUG_ON(max(_f1.endbit, _f2.endbit) <=  min(_f1.startbit, _f2.startbit)); })

CHECK: Alignment should match open parenthesis
#148: FILE: include/linux/packing.h:83:
+void unpack_fields_m(const void *pbuf, size_t pbuflen, void *ustruct,
+		      const struct packed_field_m *fields, size_t num_fields,

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#165: 
new file mode 100644

WARNING: line length of 82 exceeds 80 columns
#180: FILE: lib/gen_packing_checks.c:11:
+		printf("#define CHECK_PACKED_FIELDS_%d(fields, pbuflen) \\\n", i);

WARNING: line length of 106 exceeds 80 columns
#181: FILE: lib/gen_packing_checks.c:12:
+		printf("\t({ typeof(&(fields)[0]) _f = (fields); typeof(pbuflen) _len = (pbuflen); \\\n");

WARNING: line length of 91 exceeds 80 columns
#193: FILE: lib/gen_packing_checks.c:24:
+				printf("\tCHECK_PACKED_FIELD_OVERLAP(_f[%d], _f[%d]);%s\n",

WARNING: line length of 81 exceeds 80 columns
#214: FILE: lib/packing.c:13:
+#define __pack_fields(pbuf, pbuflen, ustruct, fields, num_fields, quirks)	\

WARNING: line length of 81 exceeds 80 columns
#215: FILE: lib/packing.c:14:
+	({									\

WARNING: line length of 81 exceeds 80 columns
#216: FILE: lib/packing.c:15:
+		for (size_t i = 0; i < (num_fields); i++) {			\

WARNING: line length of 81 exceeds 80 columns
#217: FILE: lib/packing.c:16:
+			typeof(&(fields)[0]) field = &(fields)[i];		\

WARNING: line length of 81 exceeds 80 columns
#218: FILE: lib/packing.c:17:
+			u64 uval;						\

WARNING: line length of 81 exceeds 80 columns
#219: FILE: lib/packing.c:18:
+										\

WARNING: line length of 91 exceeds 80 columns
#220: FILE: lib/packing.c:19:
+			uval = ustruct_field_to_u64(ustruct, field->offset, field->size); \

WARNING: line length of 81 exceeds 80 columns
#221: FILE: lib/packing.c:20:
+										\

WARNING: line length of 81 exceeds 80 columns
#222: FILE: lib/packing.c:21:
+			__pack(pbuf, uval, field->startbit, field->endbit,	\

WARNING: line length of 81 exceeds 80 columns
#223: FILE: lib/packing.c:22:
+			       pbuflen, quirks);				\

WARNING: line length of 81 exceeds 80 columns
#224: FILE: lib/packing.c:23:
+		}								\

WARNING: line length of 81 exceeds 80 columns
#227: FILE: lib/packing.c:26:
+#define __unpack_fields(pbuf, pbuflen, ustruct, fields, num_fields, quirks)	\

WARNING: line length of 81 exceeds 80 columns
#228: FILE: lib/packing.c:27:
+	({									\

WARNING: line length of 81 exceeds 80 columns
#229: FILE: lib/packing.c:28:
+		for (size_t i = 0; i < (num_fields); i++) {			\

WARNING: line length of 81 exceeds 80 columns
#230: FILE: lib/packing.c:29:
+			typeof(&(fields)[0]) field = &fields[i];		\

WARNING: line length of 81 exceeds 80 columns
#231: FILE: lib/packing.c:30:
+			u64 uval;						\

WARNING: line length of 81 exceeds 80 columns
#232: FILE: lib/packing.c:31:
+										\

WARNING: line length of 81 exceeds 80 columns
#233: FILE: lib/packing.c:32:
+			__unpack(pbuf, &uval, field->startbit, field->endbit,	\

WARNING: line length of 81 exceeds 80 columns
#234: FILE: lib/packing.c:33:
+				 pbuflen, quirks);				\

WARNING: line length of 81 exceeds 80 columns
#235: FILE: lib/packing.c:34:
+										\

WARNING: line length of 90 exceeds 80 columns
#236: FILE: lib/packing.c:35:
+			u64_to_ustruct_field(ustruct, field->offset, field->size, uval); \

WARNING: line length of 81 exceeds 80 columns
#237: FILE: lib/packing.c:36:
+		}								\

WARNING: line length of 81 exceeds 80 columns
#249: FILE: lib/packing.c:198:
+static void __unpack(const void *pbuf, u64 *uval, size_t startbit, size_t endbit,

CHECK: Alignment should match open parenthesis
#327: FILE: lib/packing.c:421:
+void pack_fields_m(void *pbuf, size_t pbuflen, const void *ustruct,
+		    const struct packed_field_m *fields, size_t num_fields,

CHECK: Alignment should match open parenthesis
#369: FILE: lib/packing.c:463:
+void unpack_fields_m(const void *pbuf, size_t pbuflen, void *ustruct,
+		      const struct packed_field_m *fields, size_t num_fields,

total: 1 errors, 30 warnings, 3 checks, 298 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 d74a7b5775f7 ("lib: packing: add pack_fields() and unpack_fields()") 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.