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 <boris.ostrovsky@xxxxxxxxxx>
Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx>
---
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
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