On Tue, Jul 07, 2015 at 12:16:47AM +0100, Al Stone wrote: > From: Al Stone <al.stone@xxxxxxxxxxx> > > The BAD_MADT_ENTRY() macro is designed to work for all of the subtables > of the MADT. In the ACPI 5.1 version of the spec, the struct for the > GICC subtable (struct acpi_madt_generic_interrupt) is 76 bytes long; in > ACPI 6.0, the struct is 80 bytes long. But, there is only one definition > in ACPICA for this struct -- and that is the 6.0 version. Hence, when > BAD_MADT_ENTRY() compares the struct size to the length in the GICC > subtable, it fails if 5.1 structs are in use, and there are systems in > the wild that have them. > > This patch adds the BAD_MADT_GICC_ENTRY() that checks the GICC subtable > only, accounting for the difference in specification versions that are > possible. The BAD_MADT_ENTRY() will continue to work as is for all other > MADT subtables. > > This code is being added to an arm64 header file since that is currently > the only architecture using the GICC subtable of the MADT. As a GIC is > specific to ARM, it is also unlikely the subtable will be used elsewhere. > > Fixes: aeb823bbacc2 (ACPICA: ACPI 6.0: Add changes for FADT table.) > Signed-off-by: Al Stone <al.stone@xxxxxxxxxx> > --- > arch/arm64/include/asm/acpi.h | 8 ++++++++ > 1 file changed, 8 insertions(+) Not the nicest patch I've ever seen, but if it gets things working again: Acked-by: Will Deacon <will.deacon@xxxxxxx> Catalin, I assume you're picking these two up for 4.2? Will -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
