ERROR: do not use assignment in if condition
#50: FILE: tools/testing/selftests/bpf/test_loader.c:175:
+		if (!in_regex && (m = str_has_pfx(pattern, "{{"))) {

ERROR: do not use assignment in if condition
#57: FILE: tools/testing/selftests/bpf/test_loader.c:180:
+		if (in_regex && (m = str_has_pfx(pattern, "}}"))) {

ERROR: do not use assignment in if condition
#70: FILE: tools/testing/selftests/bpf/test_loader.c:459:
+		if ((val = str_has_pfx(s, TEST_TAG_DESCRIPTION_PFX))) {

ERROR: do not use assignment in if condition
#81: FILE: tools/testing/selftests/bpf/test_loader.c:537:
+		} else if ((val = str_has_pfx(s, TEST_TAG_RETVAL_PFX))) {

ERROR: do not use assignment in if condition
#89: FILE: tools/testing/selftests/bpf/test_loader.c:543:
+		} else if ((val = str_has_pfx(s, TEST_TAG_RETVAL_PFX_UNPRIV))) {

ERROR: do not use assignment in if condition
#98: FILE: tools/testing/selftests/bpf/test_loader.c:550:
+		} else if ((val = str_has_pfx(s, TEST_TAG_LOG_LEVEL_PFX))) {

ERROR: do not use assignment in if condition
#105: FILE: tools/testing/selftests/bpf/test_loader.c:554:
+		} else if ((val = str_has_pfx(s, TEST_TAG_PROG_FLAGS_PFX))) {

ERROR: do not use assignment in if condition
#115: FILE: tools/testing/selftests/bpf/test_loader.c:579:
+		} else if ((val = str_has_pfx(s, TEST_TAG_ARCH))) {

ERROR: do not use assignment in if condition
#127: FILE: tools/testing/selftests/bpf/test_loader.c:597:
+		} else if ((val = str_has_pfx(s, TEST_BTF_PATH))) {

ERROR: do not use assignment in if condition
#129: FILE: tools/testing/selftests/bpf/test_loader.c:599:
+		} else if ((val = str_has_pfx(s, TEST_TAG_CAPS_UNPRIV))) {

ERROR: do not use assignment in if condition
#136: FILE: tools/testing/selftests/bpf/test_loader.c:604:
+		} else if ((val = str_has_pfx(s, TEST_TAG_LOAD_MODE_PFX))) {

ERROR: do not use assignment in if condition
#145: FILE: tools/testing/selftests/bpf/test_loader.c:634:
+		} else if ((val = str_has_pfx(s, TEST_TAG_LINEAR_SIZE))) {

total: 12 errors, 0 warnings, 0 checks, 125 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 bb17f52a6b84 ("selftests/bpf: make str_has_pfx return pointer past the prefix") 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.