3 files changed, 21 insertions, 1 deletions

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 7fff773f2df7..dc2175c81f5e 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -1037,6 +1037,17 @@ static void ide_disk_release(struct kref *kref)
 
 static int ide_disk_probe(ide_drive_t *drive);
 
+/*
+ * On HPA drives the capacity needs to be
+ * reinitilized on resume otherwise the disk
+ * can not be used and a hard reset is required
+ */
+static void ide_disk_resume(ide_drive_t *drive)
+{
+        if (idedisk_supports_hpa(drive->id))
+                init_idedisk_capacity(drive);
+}
+
 static void ide_device_shutdown(ide_drive_t *drive)
 {
 #ifdef  CONFIG_ALPHA
@@ -1071,6 +1082,7 @@ static ide_driver_t idedisk_driver = {
         },
         .probe                  = ide_disk_probe,
         .remove                 = ide_disk_remove,
+        .resume                 = ide_disk_resume,
         .shutdown               = ide_device_shutdown,
         .version                = IDEDISK_VERSION,
         .media                  = ide_disk,
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 6002713a20a1..0af0d1614f75 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1010,9 +1010,11 @@ static int generic_ide_resume(struct device *dev)
 {
         ide_drive_t *drive = dev->driver_data;
         ide_hwif_t *hwif = HWIF(drive);
+        ide_driver_t *drv = to_ide_driver(dev->driver);
         struct request rq;
         struct request_pm_state rqpm;
         ide_task_t args;
+        int err;
 
         /* Call ACPI _STM only once */
         if (!(drive->dn % 2))
@@ -1029,7 +1031,12 @@ static int generic_ide_resume(struct device *dev)
         rqpm.pm_step = ide_pm_state_start_resume;
         rqpm.pm_state = PM_EVENT_ON;
 
-        return ide_do_drive_cmd(drive, &rq, ide_head_wait);
+        err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
+
+        if (err == 0 && drv && drv->resume)
+                drv->resume(drive);
+
+        return err;
 }
 
 int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 07aba87d369d..1e365acdd369 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1001,6 +1001,7 @@ struct ide_driver_s {
         struct device_driver    gen_driver;
         int             (*probe)(ide_drive_t *);
         void            (*remove)(ide_drive_t *);
+        void            (*resume)(ide_drive_t *);
         void            (*shutdown)(ide_drive_t *);
 #ifdef CONFIG_IDE_PROC_FS
         ide_proc_entry_t        *proc;