ide: add proper PCI PM support (v2)

* Keep pointer to ->init_chipset method also in
  struct ide_host and set it in ide_host_alloc_all().

* Add ide_pci_suspend() and ide_pci_resume() helpers
  (default ->suspend and ->resume implementations).

* ->init_chipset can no longer be marked __devinit.

* Add proper PCI PM support to IDE PCI host drivers
  (rz1000.c and tc86c001.c are skipped for now since
  they need to be converted from using ->init_hwif
  to use ->init_chipset instead).

v2:
* Cleanup CONFIG_PM #ifdef-s per akpm's suggestion.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 432eb98f7fe7..2c5d83ddaef6 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -17,6 +17,7 @@
 #include <linux/device.h>
 #include <linux/pci.h>
 #include <linux/completion.h>
+#include <linux/pm.h>
 #ifdef CONFIG_BLK_DEV_IDEACPI
 #include <acpi/acpi.h>
 #endif
@@ -639,6 +640,7 @@ struct ide_host {
         ide_hwif_t      *ports[MAX_HWIFS];
         unsigned int    n_ports;
         struct device   *dev[2];
+        unsigned int    (*init_chipset)(struct pci_dev *);
         unsigned long   host_flags;
         void            *host_priv;
 };
@@ -1264,6 +1266,14 @@ int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
                      const struct ide_port_info *, void *);
 void ide_pci_remove(struct pci_dev *);
 
+#ifdef CONFIG_PM
+int ide_pci_suspend(struct pci_dev *, pm_message_t);
+int ide_pci_resume(struct pci_dev *);
+#else
+#define ide_pci_suspend NULL
+#define ide_pci_resume NULL
+#endif
+
 void ide_map_sg(ide_drive_t *, struct request *);
 void ide_init_sg_cmd(ide_drive_t *, struct request *);