The address check in acpi_hw_get_access_bit_width() should be byte size based, not bit width based. This patch fixes this mistake.
Reported-by: Boris Ostrovsky <[email protected]> Suggested-by: Jan Beulich <[email protected]> Signed-off-by: Lv Zheng <[email protected]> --- drivers/acpi/acpica/hwregs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index 0f18dbc..74a591b 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -95,7 +95,7 @@ acpi_hw_get_access_bit_width(struct acpi_generic_address *reg, u8 max_bit_width) if (!reg->bit_offset && reg->bit_width && ACPI_IS_POWER_OF_TWO(reg->bit_width) && ACPI_IS_ALIGNED(reg->bit_width, 8) && - ACPI_IS_ALIGNED(address, reg->bit_width)) { + ACPI_IS_ALIGNED(address, reg->bit_width >> 3)) { return (reg->bit_width); } else { if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) { -- 1.7.10
