ide: simplify 'struct ide_taskfile'

Make 'struct ide_taskfile' cover only 8 register values and thus put two such
fields ('tf' and 'hob') into 'struct ide_cmd', dropping unnecessary 'tf_array'
field from it.

This required changing the prototype of ide_get_lba_addr() and ide_tf_dump().

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: fix setting of ATA_LBA bit for LBA48 commands in __ide_do_rw_disk()]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 15 insertions, 34 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 58951f5..e2ea38d 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -282,44 +282,25 @@ enum {
 };
 
 struct ide_taskfile {
-	u8	hob_data;	/*  0: high data byte (for TASKFILE IOCTL) */
-				/*  1-5: additional data to support LBA48 */
-	union {
-		u8 hob_error;	/*   read: error */
-		u8 hob_feature;	/*  write: feature */
-	};
-
-	u8	hob_nsect;
-	u8	hob_lbal;
-	u8	hob_lbam;
-	u8	hob_lbah;
-
-	u8	data;		/*  6: low data byte (for TASKFILE IOCTL) */
-
-	union {			/*  7: */
-		u8 error;	/*   read:  error */
-		u8 feature;	/*  write: feature */
+	u8	data;		/* 0: data byte (for TASKFILE ioctl) */
+	union {			/* 1: */
+		u8 error;	/*  read: error */
+		u8 feature;	/* write: feature */
 	};
-
-	u8	nsect;		/*  8: number of sectors */
-	u8	lbal;		/*  9: LBA low */
-	u8	lbam;		/* 10: LBA mid */
-	u8	lbah;		/* 11: LBA high */
-
-	u8	device;		/* 12: device select */
-
-	union {			/* 13: */
-		u8 status;	/*  read: status  */
+	u8	nsect;		/* 2: number of sectors */
+	u8	lbal;		/* 3: LBA low */
+	u8	lbam;		/* 4: LBA mid */
+	u8	lbah;		/* 5: LBA high */
+	u8	device;		/* 6: device select */
+	union {			/* 7: */
+		u8 status;	/*  read: status */
 		u8 command;	/* write: command */
 	};
 };
 
 struct ide_cmd {
-	union {
-		struct ide_taskfile	tf;
-		u8			tf_array[14];
-	};
-
+	struct ide_taskfile	tf;
+	struct ide_taskfile	hob;
 	struct {
 		struct {
 			u8		tf;
@@ -1143,7 +1124,7 @@ extern int ide_devset_execute(ide_drive_t *drive,
 void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
 int ide_complete_rq(ide_drive_t *, int, unsigned int);
 
-void ide_tf_dump(const char *, struct ide_taskfile *);
+void ide_tf_dump(const char *, struct ide_cmd *);
 
 void ide_exec_command(ide_hwif_t *, u8);
 u8 ide_read_status(ide_hwif_t *);
@@ -1510,7 +1491,7 @@ static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
 
 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
 
-u64 ide_get_lba_addr(struct ide_taskfile *, int);
+u64 ide_get_lba_addr(struct ide_cmd *, int);
 u8 ide_dump_status(ide_drive_t *, const char *, u8);
 
 struct ide_timing {