ide: remove obsoleted "hdx=autotune" kernel parameter

* Remove obsoleted "hdx=autotune" kernel parameter
  (we always auto-tune PIO if possible nowadays).

* Remove no longer needed ide_drive_t.autotune flag.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Documentation/ide/ide.txt

@@ -196,13 +196,6 @@ Summary of ide driver parameters for kernel command line
 
  "hdx=cyl,head,sect"	: disk drive is present, with specified geometry
 
- "hdx=autotune"		: driver will attempt to tune interface speed
-			  to the fastest PIO mode supported,
-			  if possible for this drive only.
-			  Not fully supported by all chipset types,
-			  and quite likely to cause trouble with
-			  older/odd IDE drives.
-
  "hdx=nodma"		: disallow DMA
 
  "ide=doubler"		: probe/support IDE doublers on Amiga

drivers/ide/ide-probe.c

@@ -827,8 +827,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 		ide_drive_t *drive = &hwif->drives[unit];
 
 		if (drive->present) {
-			if (drive->autotune)
-				ide_set_max_pio(drive);
+			ide_set_max_pio(drive);
 
 			drive->nice1 = 1;
 
@@ -1325,7 +1324,6 @@ static void ide_port_init_devices(ide_hwif_t *hwif)
 			drive->unmask = 1;
 		if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS)
 			drive->no_unmask = 1;
-		drive->autotune = 1;
 	}
 
 	if (port_ops && port_ops->port_init_devs)

drivers/ide/ide.c

@@ -900,7 +900,7 @@ static int __init ide_setup(char *s)
 	if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
 		const char *hd_words[] = {
 			"none", "noprobe", "nowerr", "cdrom", "nodma",
-			"autotune", "-7", "-8", "-9", "-10",
+			"-6", "-7", "-8", "-9", "-10",
 			"noflush", "remap", "remap63", "scsi", NULL };
 		unit = s[2] - 'a';
 		hw   = unit / MAX_DRIVES;
@@ -928,9 +928,6 @@ static int __init ide_setup(char *s)
 			case -5: /* nodma */
 				drive->nodma = 1;
 				goto done;
-			case -6: /* "autotune" */
-				drive->autotune = 1;
-				goto obsolete_option;
 			case -11: /* noflush */
 				drive->noflush = 1;
 				goto done;

include/linux/ide.h

@@ -321,7 +321,6 @@ typedef struct ide_drive_s {
 	unsigned atapi_overlap	: 1;	/* ATAPI overlap (not supported) */
 	unsigned doorlocking	: 1;	/* for removable only: door lock/unlock works */
 	unsigned nodma		: 1;	/* disallow DMA */
-	unsigned autotune	: 1;	/* 0=default, 1=autotune */
 	unsigned remap_0_to_1	: 1;	/* 0=noremap, 1=remap 0->1 (for EZDrive) */
 	unsigned blocked        : 1;	/* 1=powermanagment told us not to do anything, so sleep nicely */
 	unsigned vdma		: 1;	/* 1=doing PIO over DMA 0=doing normal DMA */