Hi Andy,
On Thu, Aug 29, 2019 at 10:04 PM Andy Shevchenko andriy.shevchenko@linux.intel.com wrote:
GCC starts complaining about possible pointer misalignment of pointers to the
Which GCC version?
unpacked (alignment=4) structures in the packed (alignment=1) ones:
CC arch/x86/cpu/tangier/acpi.o arch/x86/cpu/tangier/acpi.c: In function ‘acpi_create_fadt’: arch/x86/cpu/tangier/acpi.c:22:37: warning: taking address of packed member of ‘struct acpi_fadt’ may result in an unaligned pointer value [-Waddress-of-packed-member] 22 | struct acpi_table_header *header = &(fadt->header);
CC arch/x86/lib/acpi_table.o arch/x86/lib/acpi_table.c: In function ‘acpi_create_spcr’: arch/x86/lib/acpi_table.c:366:37: warning: taking address of packed member of ‘struct acpi_spcr’ may result in an unaligned pointer value [-Waddress-of-packed-member] 366 | struct acpi_table_header *header = &(spcr->header);
Fix the potential issues by annotating embedded structures with __packed even though they are packed naturally.
Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com
arch/x86/include/asm/acpi_table.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Regards, Bin