Home Explore Help
Sign In
GfA
/
linux_kernel
5
0
Fork 0
Files Issues 0 Pull Requests 0 Wiki
Browse Source

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 <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Jiang Liu 10 years ago
parent
fcb29bbcd5
commit
8515f93681
1 changed files with 2 additions and 2 deletions
Unified View Show Diff Stats
  1. 2 2
      drivers/acpi/resource.c

+ 2 - 2
drivers/acpi/resource.c
View File 

@@ -90,8 +90,8 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res)
 
 	switch (ares->type) {
 
 	switch (ares->type) {
 
 	case ACPI_RESOURCE_TYPE_MEMORY24:
 
 	case ACPI_RESOURCE_TYPE_MEMORY24:
 
 		memory24 = &ares->data.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);
 
 					 memory24->write_protect);
 
 		break;
 
 		break;
 
 	case ACPI_RESOURCE_TYPE_MEMORY32:
 
 	case ACPI_RESOURCE_TYPE_MEMORY32: