1 files changed, 36 insertions, 0 deletions

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 6c9bd5165bdb..c750f6ce770a 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -187,6 +187,12 @@ int noautodma = 1;
 
 EXPORT_SYMBOL(noautodma);
 
+#ifdef CONFIG_BLK_DEV_IDEACPI
+int ide_noacpi = 0;
+int ide_noacpitfs = 1;
+int ide_noacpionboot = 1;
+#endif
+
 /*
  * This is declared extern in ide.h, for access by other IDE modules:
  */
@@ -1214,10 +1220,15 @@ EXPORT_SYMBOL(system_bus_clock);
 static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
 {
         ide_drive_t *drive = dev->driver_data;
+        ide_hwif_t *hwif = HWIF(drive);
         struct request rq;
         struct request_pm_state rqpm;
         ide_task_t args;
 
+        /* Call ACPI _GTM only once */
+        if (!(drive->dn % 2))
+                ide_acpi_get_timing(hwif);
+
         memset(&rq, 0, sizeof(rq));
         memset(&rqpm, 0, sizeof(rqpm));
         memset(&args, 0, sizeof(args));
@@ -1235,10 +1246,17 @@ static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
 static int generic_ide_resume(struct device *dev)
 {
         ide_drive_t *drive = dev->driver_data;
+        ide_hwif_t *hwif = HWIF(drive);
         struct request rq;
         struct request_pm_state rqpm;
         ide_task_t args;
 
+        /* Call ACPI _STM only once */
+        if (!(drive->dn % 2))
+                ide_acpi_push_timing(hwif);
+
+        ide_acpi_exec_tfs(drive);
+
         memset(&rq, 0, sizeof(rq));
         memset(&rqpm, 0, sizeof(rqpm));
         memset(&args, 0, sizeof(args));
@@ -1543,6 +1561,24 @@ static int __init ide_setup(char *s)
         }
 #endif /* CONFIG_BLK_DEV_IDEPCI */
 
+#ifdef CONFIG_BLK_DEV_IDEACPI
+        if (!strcmp(s, "ide=noacpi")) {
+                //printk(" : Disable IDE ACPI support.\n");
+                ide_noacpi = 1;
+                return 1;
+        }
+        if (!strcmp(s, "ide=acpigtf")) {
+                //printk(" : Enable IDE ACPI _GTF support.\n");
+                ide_noacpitfs = 0;
+                return 1;
+        }
+        if (!strcmp(s, "ide=acpionboot")) {
+                //printk(" : Call IDE ACPI methods on boot.\n");
+                ide_noacpionboot = 0;
+                return 1;
+        }
+#endif /* CONFIG_BLK_DEV_IDEACPI */
+
         /*
          * Look for drive options:  "hdx="
          */