svn commit: r357349 - in head/sys: conf modules/tpm

[Dimitry Andric]

Author: dim
Date: Fri Jan 31 19:36:14 2020
New Revision: 357349
URL: https://svnweb.freebsd.org/changeset/base/357349

Log:
  Merge r357348 from the clang 10.0.0 import branch:
  
  Disable new clang 10.0.0 warnings about converting the result of shift
  operations to a boolean in tpm(4):
  
  sys/dev/tpm/tpm_crb.c:301:32: error: converting the result of '<<' to a boolean; did you mean '(1 << (0)) != 0'? [-Werror,-Wint-in-bool-context]
          WR4(sc, TPM_CRB_CTRL_CANCEL, !TPM_CRB_CTRL_CANCEL_CMD);
                                        ^
  sys/dev/tpm/tpm_crb.c:73:34: note: expanded from macro 'TPM_CRB_CTRL_CANCEL_CMD'
  #define TPM_CRB_CTRL_CANCEL_CMD         BIT(0)
                                          ^
  sys/dev/tpm/tpm20.h:60:19: note: expanded from macro 'BIT'
  #define BIT(x) (1 << (x))
                    ^
  
  Such warnings can be useful in C++ contexts, but not so much in kernel
  drivers, where this type of bit twiddling is commonplace.  So disable it
  for this case.
  
  MFC after:	3 days

Modified:
  head/sys/conf/files.amd64
  head/sys/conf/kern.mk
  head/sys/modules/tpm/Makefile
Directory Properties:
  head/   (props changed)

Modified: head/sys/conf/files.amd64
==============================================================================
--- head/sys/conf/files.amd64	Fri Jan 31 19:35:21 2020	(r357348)
+++ head/sys/conf/files.amd64	Fri Jan 31 19:36:14 2020	(r357349)
@@ -323,7 +323,8 @@ dev/syscons/scvesactl.c		optional	sc vga vesa
 dev/syscons/scvgarndr.c		optional	sc vga
 dev/tpm/tpm.c			optional	tpm
 dev/tpm/tpm20.c		optional	tpm
-dev/tpm/tpm_crb.c		optional	tpm acpi
+dev/tpm/tpm_crb.c		optional	tpm acpi \
+	compile-with "${NORMAL_C} ${NO_WINT_IN_BOOL_CONTEXT}"
 dev/tpm/tpm_tis.c		optional	tpm acpi
 dev/tpm/tpm_acpi.c		optional	tpm acpi
 dev/tpm/tpm_isa.c		optional	tpm isa

Modified: head/sys/conf/kern.mk
==============================================================================
--- head/sys/conf/kern.mk	Fri Jan 31 19:35:21 2020	(r357348)
+++ head/sys/conf/kern.mk	Fri Jan 31 19:36:14 2020	(r357349)
@@ -37,6 +37,9 @@ CWARNEXTRA+=	-Wno-error-shift-negative-value
 .if ${COMPILER_VERSION} >= 40000
 CWARNEXTRA+=	-Wno-address-of-packed-member
 .endif
+.if ${COMPILER_VERSION} >= 100000
+NO_WINT_IN_BOOL_CONTEXT=	-Wno-int-in-bool-context
+.endif
 .endif
 
 .if ${COMPILER_TYPE} == "gcc"

Modified: head/sys/modules/tpm/Makefile
==============================================================================
--- head/sys/modules/tpm/Makefile	Fri Jan 31 19:35:21 2020	(r357348)
+++ head/sys/modules/tpm/Makefile	Fri Jan 31 19:36:14 2020	(r357349)
@@ -11,3 +11,5 @@ SRCS+=	tpm_isa.c tpm_acpi.c isa_if.h opt_acpi.h acpi_i
 SRCS+=	tpm20.c tpm_crb.c tpm_tis.c opt_tpm.h
 
 .include <bsd.kmod.mk>
+
+CWARNFLAGS.tpm_crb.c+=	${NO_WINT_IN_BOOL_CONTEXT}