libata: add private driver field to struct ata_device

This brings struct ata_device in-line with struct ata_{port,host}.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/include/linux/libata.h b/include/linux/libata.h
index ba07e84..a5b3dc7 100644 (file)
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -595,6 +595,7 @@ struct ata_device {
        unsigned int            horkage;        /* List of broken features */
        unsigned long           flags;          /* ATA_DFLAG_xxx */
        struct scsi_device      *sdev;          /* attached SCSI device */
+       void                    *private_data;
 #ifdef CONFIG_ATA_ACPI
        acpi_handle             acpi_handle;
        union acpi_object       *gtf_cache;