libata: misc updates for AN

Update AN support in preparation of PMP support.

* s/ata_id_has_AN/ata_id_has_atapi_AN/
* add AN enabled reporting during configuration
* add err_mask to AN configuration failure reporting
* update LOCKING comment for ata_scsi_media_change_notify()
* check whether ATA dev is attached to SCSI dev ata_scsi_media_change_notify()
* set ATA_FLAG_AN in ahci and sata_sil24

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Kriten Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 468d791a303c..dc274001ddd9 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3238,12 +3238,13 @@ static void ata_scsi_handle_link_detach(struct ata_link *link)
  *      event.
  *
  *      LOCKING:
- *      interrupt context, may not sleep.
+ *      spin_lock_irqsave(host lock)
  */
-void ata_scsi_media_change_notify(struct ata_device *atadev)
+void ata_scsi_media_change_notify(struct ata_device *dev)
 {
 #ifdef OTHER_AN_PATCHES_HAVE_BEEN_APPLIED
-        scsi_device_event_notify(atadev->sdev, SDEV_MEDIA_CHANGE);
+        if (dev->sdev)
+                scsi_device_event_notify(dev->sdev, SDEV_MEDIA_CHANGE);
 #endif
 }
 EXPORT_SYMBOL_GPL(ata_scsi_media_change_notify);