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authorLen Brown <len.brown@intel.com>2012-01-18 00:46:30 -0500
committerLen Brown <len.brown@intel.com>2012-01-18 00:46:30 -0500
commitcb7971756b901abd61d47f6eb1011066abfb348d (patch)
treec822e575f95c6f8ee5814648f6ccc1fb3226f6fc /drivers/acpi/osl.c
parent037d76f40430ba1269dc7d1fee22382cd9672997 (diff)
parent700130b41f4ee54520ac2ef2f7f1d072789711a4 (diff)
downloadop-kernel-dev-cb7971756b901abd61d47f6eb1011066abfb348d.zip
op-kernel-dev-cb7971756b901abd61d47f6eb1011066abfb348d.tar.gz
Merge branch 'atomicio-remove' into release
Diffstat (limited to 'drivers/acpi/osl.c')
-rw-r--r--drivers/acpi/osl.c40
1 files changed, 26 insertions, 14 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 3e57fbd..fcc12d8 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -153,17 +153,21 @@ static u32 acpi_osi_handler(acpi_string interface, u32 supported)
return supported;
}
-static void __init acpi_request_region (struct acpi_generic_address *addr,
+static void __init acpi_request_region (struct acpi_generic_address *gas,
unsigned int length, char *desc)
{
- if (!addr->address || !length)
+ u64 addr;
+
+ /* Handle possible alignment issues */
+ memcpy(&addr, &gas->address, sizeof(addr));
+ if (!addr || !length)
return;
/* Resources are never freed */
- if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
- request_region(addr->address, length, desc);
- else if (addr->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
- request_mem_region(addr->address, length, desc);
+ if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+ request_region(addr, length, desc);
+ else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
+ request_mem_region(addr, length, desc);
}
static int __init acpi_reserve_resources(void)
@@ -414,35 +418,42 @@ void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size)
__acpi_unmap_table(virt, size);
}
-static int acpi_os_map_generic_address(struct acpi_generic_address *addr)
+int acpi_os_map_generic_address(struct acpi_generic_address *gas)
{
+ u64 addr;
void __iomem *virt;
- if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
+ if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
return 0;
- if (!addr->address || !addr->bit_width)
+ /* Handle possible alignment issues */
+ memcpy(&addr, &gas->address, sizeof(addr));
+ if (!addr || !gas->bit_width)
return -EINVAL;
- virt = acpi_os_map_memory(addr->address, addr->bit_width / 8);
+ virt = acpi_os_map_memory(addr, gas->bit_width / 8);
if (!virt)
return -EIO;
return 0;
}
+EXPORT_SYMBOL(acpi_os_map_generic_address);
-static void acpi_os_unmap_generic_address(struct acpi_generic_address *addr)
+void acpi_os_unmap_generic_address(struct acpi_generic_address *gas)
{
+ u64 addr;
struct acpi_ioremap *map;
- if (addr->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
+ if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
return;
- if (!addr->address || !addr->bit_width)
+ /* Handle possible alignment issues */
+ memcpy(&addr, &gas->address, sizeof(addr));
+ if (!addr || !gas->bit_width)
return;
mutex_lock(&acpi_ioremap_lock);
- map = acpi_map_lookup(addr->address, addr->bit_width / 8);
+ map = acpi_map_lookup(addr, gas->bit_width / 8);
if (!map) {
mutex_unlock(&acpi_ioremap_lock);
return;
@@ -452,6 +463,7 @@ static void acpi_os_unmap_generic_address(struct acpi_generic_address *addr)
acpi_os_map_cleanup(map);
}
+EXPORT_SYMBOL(acpi_os_unmap_generic_address);
#ifdef ACPI_FUTURE_USAGE
acpi_status
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