From 8515f9368161730655b64ddaf8b11a3d20049610 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 2 Feb 2015 10:42:54 +0800 Subject: [PATCH] ACPI: Fix a bug in parsing ACPI Memory24 resource According to ACPI spec 5, section 6.4.3.1 "24-Bit Memory Range Descriptor", minimum, maximum and address_length field in struct acpi_resource_memory24 is in granularity of 256-bytes. So shift 8-bit left to get correct address. Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/resource.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index 7ce00a63f695..5544c6d26f32 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -90,8 +90,8 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res) switch (ares->type) { case ACPI_RESOURCE_TYPE_MEMORY24: memory24 = &ares->data.memory24; - acpi_dev_get_memresource(res, memory24->minimum, - memory24->address_length, + acpi_dev_get_memresource(res, memory24->minimum << 8, + memory24->address_length << 8, memory24->write_protect); break; case ACPI_RESOURCE_TYPE_MEMORY32: -- 2.39.5