ACPICA: Avoid NULL pointer arithmetic
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Web: https://git.kernel.org/torvalds/c/761f0b82393353507930b6721ae4311a9df2ca36 Commit: 761f0b82393353507930b6721ae4311a9df2ca36 Parent: 0eedae8e5f983aba6fb5c29c8699ecf03c7e50e0 Refname: refs/heads/master Author: Jung-uk Kim <[email protected]> AuthorDate: Wed Jan 24 15:42:30 2018 -0800 Committer: Rafael J. Wysocki <[email protected]> CommitDate: Sun Feb 4 08:58:31 2018 +0100 ACPICA: Avoid NULL pointer arithmetic We should not assume NULL is defined as "(void *)0" because NULL is an implementation-defined macro. Especially, Clang 6 complains about it, i.e., "arithmetic on a null pointer treated as a cast from integer to pointer is a GNU extension". Signed-off-by: Jung-uk Kim <jkim@free_BSD.org> Signed-off-by: Erik Schmauss <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]> --- include/acpi/actypes.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 31f1be74dd16..f3999ae7a43f 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -485,7 +485,7 @@ typedef u8 acpi_owner_id; /* * Constants with special meanings */ -#define ACPI_ROOT_OBJECT ACPI_ADD_PTR (acpi_handle, NULL, ACPI_MAX_PTR) +#define ACPI_ROOT_OBJECT ACPI_ADD_PTR (acpi_handle, (void *) 0, ACPI_MAX_PTR) #define ACPI_WAIT_FOREVER 0xFFFF /* u16, as per ACPI spec */ #define ACPI_DO_NOT_WAIT 0 @@ -536,9 +536,9 @@ typedef u64 acpi_integer; /* Pointer/Integer type conversions */ -#define ACPI_TO_POINTER(i) ACPI_ADD_PTR (void, (void *) NULL,(acpi_size) i) -#define ACPI_TO_INTEGER(p) ACPI_PTR_DIFF (p, (void *) NULL) -#define ACPI_OFFSET(d, f) ACPI_PTR_DIFF (&(((d *) 0)->f), (void *) NULL) +#define ACPI_TO_POINTER(i) ACPI_ADD_PTR (void, (void *) 0, (acpi_size) (i)) +#define ACPI_TO_INTEGER(p) ACPI_PTR_DIFF (p, (void *) 0) +#define ACPI_OFFSET(d, f) ACPI_PTR_DIFF (&(((d *) 0)->f), (void *) 0) #define ACPI_PHYSADDR_TO_PTR(i) ACPI_TO_POINTER(i) #define ACPI_PTR_TO_PHYSADDR(i) ACPI_TO_INTEGER(i) -- To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html