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path: root/drivers/acpi/osl.c
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Diffstat (limited to 'drivers/acpi/osl.c')
-rw-r--r--drivers/acpi/osl.c45
1 files changed, 11 insertions, 34 deletions
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 3b8963f21b36..739a4a6b3b9b 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -19,10 +19,6 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
*/
@@ -47,6 +43,7 @@
#include <asm/io.h>
#include <asm/uaccess.h>
+#include <asm-generic/io-64-nonatomic-lo-hi.h>
#include "internal.h"
@@ -83,6 +80,7 @@ static void *acpi_irq_context;
static struct workqueue_struct *kacpid_wq;
static struct workqueue_struct *kacpi_notify_wq;
static struct workqueue_struct *kacpi_hotplug_wq;
+static bool acpi_os_initialized;
/*
* This list of permanent mappings is for memory that may be accessed from
@@ -947,21 +945,6 @@ acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width)
EXPORT_SYMBOL(acpi_os_write_port);
-#ifdef readq
-static inline u64 read64(const volatile void __iomem *addr)
-{
- return readq(addr);
-}
-#else
-static inline u64 read64(const volatile void __iomem *addr)
-{
- u64 l, h;
- l = readl(addr);
- h = readl(addr+4);
- return l | (h << 32);
-}
-#endif
-
acpi_status
acpi_os_read_memory(acpi_physical_address phys_addr, u64 *value, u32 width)
{
@@ -994,7 +977,7 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u64 *value, u32 width)
*(u32 *) value = readl(virt_addr);
break;
case 64:
- *(u64 *) value = read64(virt_addr);
+ *(u64 *) value = readq(virt_addr);
break;
default:
BUG();
@@ -1008,19 +991,6 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u64 *value, u32 width)
return AE_OK;
}
-#ifdef writeq
-static inline void write64(u64 val, volatile void __iomem *addr)
-{
- writeq(val, addr);
-}
-#else
-static inline void write64(u64 val, volatile void __iomem *addr)
-{
- writel(val, addr);
- writel(val>>32, addr+4);
-}
-#endif
-
acpi_status
acpi_os_write_memory(acpi_physical_address phys_addr, u64 value, u32 width)
{
@@ -1049,7 +1019,7 @@ acpi_os_write_memory(acpi_physical_address phys_addr, u64 value, u32 width)
writel(value, virt_addr);
break;
case 64:
- write64(value, virt_addr);
+ writeq(value, virt_addr);
break;
default:
BUG();
@@ -1316,6 +1286,9 @@ acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
long jiffies;
int ret = 0;
+ if (!acpi_os_initialized)
+ return AE_OK;
+
if (!sem || (units < 1))
return AE_BAD_PARAMETER;
@@ -1355,6 +1328,9 @@ acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
{
struct semaphore *sem = (struct semaphore *)handle;
+ if (!acpi_os_initialized)
+ return AE_OK;
+
if (!sem || (units < 1))
return AE_BAD_PARAMETER;
@@ -1863,6 +1839,7 @@ acpi_status __init acpi_os_initialize(void)
rv = acpi_os_map_generic_address(&acpi_gbl_FADT.reset_register);
pr_debug(PREFIX "%s: map reset_reg status %d\n", __func__, rv);
}
+ acpi_os_initialized = true;
return AE_OK;
}