ide: use ata_tf_protocols enums

* Add IDE_TFLAG_MULTI_PIO taskfile flag and set it for commands
  using multi-PIO protocol.

* Use ata_tf_protocols enums instead of TASKFILE_* defines to
  denote command's protocol and then rename ->data_phase field
  to ->protocol.

* Remove no longer needed <linux/hdreg.h> includes.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 02128e9241d1..f9decc9852e9 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -298,6 +298,7 @@ enum {
         /* struct ide_cmd was allocated using kmalloc() */
         IDE_TFLAG_DYN                   = (1 << 27),
         IDE_TFLAG_FS                    = (1 << 28),
+        IDE_TFLAG_MULTI_PIO             = (1 << 29),
 };
 
 enum {
@@ -343,7 +344,7 @@ struct ide_cmd {
         };
         u8                      ftf_flags;      /* for TASKFILE ioctl */
         u32                     tf_flags;
-        int                     data_phase;
+        int                     protocol;
 
         int                     sg_nents;         /* number of sg entries */
         int                     orig_sg_nents;