WARNING: please, no spaces at the start of a line
#7: FILE: src/csn1.c:76:
+  ar->direction           = CSN_DIRECTION_ENC;$

WARNING: please, no spaces at the start of a line
#15: FILE: src/csn1.h:55:
+  CSN_DIRECTION_ENC = 0,$

WARNING: please, no spaces at the start of a line
#16: FILE: src/csn1.h:56:
+  CSN_DIRECTION_DEC  = 1,$

WARNING: please, no spaces at the start of a line
#20: FILE: src/csn1.h:69:
+  enum CSN_Direction direction; /* encode vs decode */$

ERROR: code indent should use tabs where possible
#27: FILE: src/csn1_dec.c:486:
+        arT.direction = CSN_DIRECTION_DEC;$

WARNING: please, no spaces at the start of a line
#27: FILE: src/csn1_dec.c:486:
+        arT.direction = CSN_DIRECTION_DEC;$

ERROR: code indent should use tabs where possible
#34: FILE: src/csn1_enc.c:436:
+        arT.direction = CSN_DIRECTION_ENC;$

WARNING: please, no spaces at the start of a line
#34: FILE: src/csn1_enc.c:436:
+        arT.direction = CSN_DIRECTION_ENC;$

total: 2 errors, 6 warnings, 13 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.

NOTE: Whitespace errors detected.
      You may wish to use scripts/cleanpatch or scripts/cleanfile

Your patch has style problems, please review.

NOTE: Ignored message types: ASSIGN_IN_IF AVOID_EXTERNS BLOCK_COMMENT_STYLE COMPLEX_MACRO CONSTANT_COMPARISON DEEP_INDENTATION EMBEDDED_FILENAME EMBEDDED_FUNCTION_NAME EXECUTE_PERMISSIONS FILE_PATH_CHANGES GLOBAL_INITIALISERS IF_0 INITIALISED_STATIC LINE_CONTINUATIONS LINE_SPACING LONG_LINE LONG_LINE_COMMENT LONG_LINE_STRING MACRO_WITH_FLOW_CONTROL MISSING_SPACE PREFER_DEFINED_ATTRIBUTE_MACRO PREFER_FALLTHROUGH REPEATED_WORD SPDX_LICENSE_TAG SPLIT_STRING STRING_FRAGMENTS SYMBOLIC_PERMS TRACING_LOGGING TRAILING_STATEMENTS UNNECESSARY_BREAK UNNECESSARY_INT UNSPECIFIED_INT VOLATILE

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.