ide-cd: convert to using the new atapi_flags
There should be no functionality change resulting from this patch.
[bart: IDE_FLAG_* -> IDE_AFLAG_*, dev_flags -> atapi_flags]
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index d9798ca..52fe3b9 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -85,10 +85,8 @@
/* Mark that we've seen a media change and invalidate our internal buffers. */
static void cdrom_saw_media_change(ide_drive_t *drive)
{
- struct cdrom_info *cd = drive->driver_data;
-
- cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED;
- cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
+ drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
+ drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
}
static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
@@ -529,7 +527,7 @@
ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL,
xferlen, info->dma);
- if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
+ if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
/* waiting for CDB interrupt, not DMA yet. */
if (info->dma)
drive->waiting_for_dma = 0;
@@ -561,7 +559,7 @@
struct cdrom_info *info = drive->driver_data;
ide_startstop_t startstop;
- if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) {
+ if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
/*
* Here we should have been called after receiving an interrupt
* from the device. DRQ should how be set.
@@ -648,20 +646,18 @@
*/
static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)
{
- struct cdrom_info *cd = drive->driver_data;
-
if ((len % SECTOR_SIZE) == 0)
return 0;
printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
drive->name, __func__, len);
- if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
+ if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)
printk(KERN_ERR " This drive is not supported by "
"this version of the driver\n");
else {
printk(KERN_ERR " Trying to limit transfer sizes\n");
- cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES;
+ drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;
}
return 1;
@@ -738,7 +734,7 @@
if (cdrom_decode_status(drive, 0, &stat))
return ide_stopped;
- info->cd_flags |= IDE_CD_FLAG_SEEKING;
+ drive->atapi_flags |= IDE_AFLAG_SEEKING;
if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
if (--retry == 0)
@@ -1197,7 +1193,7 @@
int xferlen;
if (blk_fs_request(rq)) {
- if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
+ if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
ide_hwif_t *hwif = drive->hwif;
unsigned long elapsed = jiffies - info->start_seek;
int stat = hwif->tp_ops->read_status(hwif);
@@ -1211,7 +1207,7 @@
printk(KERN_ERR "%s: DSC timeout\n",
drive->name);
}
- info->cd_flags &= ~IDE_CD_FLAG_SEEKING;
+ drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
}
if (rq_data_dir(rq) == READ &&
IDE_LARGE_SEEK(info->last_block, block,
@@ -1369,7 +1365,7 @@
*/
(void) cdrom_check_status(drive, sense);
- if (info->cd_flags & IDE_CD_FLAG_TOC_VALID)
+ if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
return 0;
/* try to get the total cdrom capacity and sector size */
@@ -1391,7 +1387,7 @@
if (stat)
return stat;
- if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
+ if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
}
@@ -1432,7 +1428,7 @@
if (stat)
return stat;
- if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
+ if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT);
toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT);
} else {
@@ -1446,14 +1442,14 @@
toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
- if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) {
+ if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
toc->hdr.first_track = BCD2BIN(toc->hdr.first_track);
toc->hdr.last_track = BCD2BIN(toc->hdr.last_track);
}
for (i = 0; i <= ntracks; i++) {
- if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
- if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD)
+ if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
+ if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
toc->ent[i].track = BCD2BIN(toc->ent[i].track);
msf_from_bcd(&toc->ent[i].addr.msf);
}
@@ -1476,7 +1472,7 @@
toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
}
- if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) {
+ if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
/* re-read multisession information using MSF format */
stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
sizeof(ms_tmp), sense);
@@ -1500,7 +1496,7 @@
}
/* Remember that we've read this stuff. */
- info->cd_flags |= IDE_CD_FLAG_TOC_VALID;
+ drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
return 0;
}
@@ -1512,7 +1508,7 @@
struct packet_command cgc;
int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
- if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0)
+ if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
@@ -1533,7 +1529,7 @@
curspeed = *(u16 *)&buf[8 + 14];
maxspeed = *(u16 *)&buf[8 + 8];
- if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) {
+ if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
curspeed = le16_to_cpu(curspeed);
maxspeed = le16_to_cpu(maxspeed);
} else {
@@ -1579,7 +1575,7 @@
devinfo->handle = drive;
strcpy(devinfo->name, drive->name);
- if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT)
+ if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
devinfo->mask |= CDC_SELECT_SPEED;
devinfo->disk = info->disk;
@@ -1605,8 +1601,8 @@
return nslots;
}
- if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) {
- cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
+ if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
+ drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
cdi->mask &= ~CDC_PLAY_AUDIO;
return nslots;
}
@@ -1624,9 +1620,9 @@
return 0;
if ((buf[8 + 6] & 0x01) == 0)
- cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
+ drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK;
if (buf[8 + 6] & 0x08)
- cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT;
+ drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
if (buf[8 + 3] & 0x01)
cdi->mask &= ~CDC_CD_R;
if (buf[8 + 3] & 0x02)
@@ -1637,7 +1633,7 @@
cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
if (buf[8 + 3] & 0x10)
cdi->mask &= ~CDC_DVD_R;
- if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK))
+ if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
cdi->mask &= ~CDC_PLAY_AUDIO;
mechtype = buf[8 + 6] >> 5;
@@ -1802,43 +1798,43 @@
static const struct cd_list_entry ide_cd_quirks_list[] = {
/* Limit transfer size per interrupt. */
- { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
- { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES },
+ { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_AFLAG_LIMIT_NFRAMES },
+ { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_AFLAG_LIMIT_NFRAMES },
/* SCR-3231 doesn't support the SET_CD_SPEED command. */
- { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT },
+ { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
/* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
- { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD |
- IDE_CD_FLAG_PRE_ATAPI12, },
+ { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
+ IDE_AFLAG_PRE_ATAPI12, },
/* Vertos 300, some versions of this drive like to talk BCD. */
- { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, },
+ { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
/* Vertos 600 ESD. */
- { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, },
+ { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
/*
* Sanyo 3 CD changer uses a non-standard command for CD changing
* (by default standard ATAPI support for CD changers is used).
*/
- { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD },
- { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD },
- { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD },
+ { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
+ { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
+ { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
/* Stingray 8X CD-ROM. */
- { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12},
+ { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
/*
* ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
* mode sense page capabilities size, but older drives break.
*/
- { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
- { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE },
+ { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
+ { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
/* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
- { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS },
+ { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
/*
* Some drives used by Apple don't advertise audio play
* but they do support reading TOC & audio datas.
*/
- { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
- { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
- { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
- { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
- { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK },
+ { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
+ { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
+ { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
+ { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
+ { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
{ NULL, NULL, 0 }
};
@@ -1873,20 +1869,20 @@
drive->special.all = 0;
- cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT |
+ drive->atapi_flags = IDE_AFLAG_MEDIA_CHANGED | IDE_AFLAG_NO_EJECT |
ide_cd_flags(id);
if ((id->config & 0x0060) == 0x20)
- cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT;
+ drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
- if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) &&
+ if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
- cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD |
- IDE_CD_FLAG_TOCADDR_AS_BCD);
- else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) &&
+ drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
+ IDE_AFLAG_TOCADDR_AS_BCD);
+ else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
id->fw_rev[4] == '1' && id->fw_rev[6] <= '2')
- cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD;
- else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD)
+ drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
+ else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
/* 3 => use CD in slot 0 */
cdi->sanyo_slot = 3;
diff --git a/drivers/ide/ide-cd.h b/drivers/ide/ide-cd.h
index fe0ea36..61a4599 100644
--- a/drivers/ide/ide-cd.h
+++ b/drivers/ide/ide-cd.h
@@ -27,42 +27,6 @@
#define ATAPI_CAPABILITIES_PAGE_SIZE (8 + 20)
#define ATAPI_CAPABILITIES_PAGE_PAD_SIZE 4
-enum {
- /* Device sends an interrupt when ready for a packet command. */
- IDE_CD_FLAG_DRQ_INTERRUPT = (1 << 0),
- /* Drive cannot lock the door. */
- IDE_CD_FLAG_NO_DOORLOCK = (1 << 1),
- /* Drive cannot eject the disc. */
- IDE_CD_FLAG_NO_EJECT = (1 << 2),
- /* Drive is a pre ATAPI 1.2 drive. */
- IDE_CD_FLAG_PRE_ATAPI12 = (1 << 3),
- /* TOC addresses are in BCD. */
- IDE_CD_FLAG_TOCADDR_AS_BCD = (1 << 4),
- /* TOC track numbers are in BCD. */
- IDE_CD_FLAG_TOCTRACKS_AS_BCD = (1 << 5),
- /*
- * Drive does not provide data in multiples of SECTOR_SIZE
- * when more than one interrupt is needed.
- */
- IDE_CD_FLAG_LIMIT_NFRAMES = (1 << 6),
- /* Seeking in progress. */
- IDE_CD_FLAG_SEEKING = (1 << 7),
- /* Driver has noticed a media change. */
- IDE_CD_FLAG_MEDIA_CHANGED = (1 << 8),
- /* Saved TOC information is current. */
- IDE_CD_FLAG_TOC_VALID = (1 << 9),
- /* We think that the drive door is locked. */
- IDE_CD_FLAG_DOOR_LOCKED = (1 << 10),
- /* SET_CD_SPEED command is unsupported. */
- IDE_CD_FLAG_NO_SPEED_SELECT = (1 << 11),
- IDE_CD_FLAG_VERTOS_300_SSD = (1 << 12),
- IDE_CD_FLAG_VERTOS_600_ESD = (1 << 13),
- IDE_CD_FLAG_SANYO_3CD = (1 << 14),
- IDE_CD_FLAG_FULL_CAPS_PAGE = (1 << 15),
- IDE_CD_FLAG_PLAY_AUDIO_OK = (1 << 16),
- IDE_CD_FLAG_LE_SPEED_FIELDS = (1 << 17),
-};
-
/* Structure of a MSF cdrom address. */
struct atapi_msf {
byte reserved;
@@ -128,8 +92,6 @@
unsigned long last_block;
unsigned long start_seek;
- unsigned int cd_flags;
-
u8 max_speed; /* Max speed of the drive. */
u8 current_speed; /* Current speed of the drive. */
diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
index 24d002a..085442a 100644
--- a/drivers/ide/ide-cd_ioctl.c
+++ b/drivers/ide/ide-cd_ioctl.c
@@ -27,10 +27,9 @@
void ide_cdrom_release_real(struct cdrom_device_info *cdi)
{
ide_drive_t *drive = cdi->handle;
- struct cdrom_info *cd = drive->driver_data;
if (!cdi->use_count)
- cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID;
+ drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
}
/*
@@ -83,13 +82,12 @@
int slot_nr)
{
ide_drive_t *drive = cdi->handle;
- struct cdrom_info *cd = drive->driver_data;
int retval;
if (slot_nr == CDSL_CURRENT) {
(void) cdrom_check_status(drive, NULL);
- retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0;
- cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED;
+ retval = (drive->atapi_flags & IDE_AFLAG_MEDIA_CHANGED) ? 1 : 0;
+ drive->atapi_flags &= ~IDE_AFLAG_MEDIA_CHANGED;
return retval;
} else {
return -EINVAL;
@@ -107,11 +105,11 @@
char loej = 0x02;
unsigned char cmd[BLK_MAX_CDB];
- if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag)
+ if ((drive->atapi_flags & IDE_AFLAG_NO_EJECT) && !ejectflag)
return -EDRIVE_CANT_DO_THIS;
/* reload fails on some drives, if the tray is locked */
- if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag)
+ if ((drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED) && ejectflag)
return 0;
/* only tell drive to close tray if open, if it can do that */
@@ -131,7 +129,6 @@
int ide_cd_lockdoor(ide_drive_t *drive, int lockflag,
struct request_sense *sense)
{
- struct cdrom_info *cd = drive->driver_data;
struct request_sense my_sense;
int stat;
@@ -139,7 +136,7 @@
sense = &my_sense;
/* If the drive cannot lock the door, just pretend. */
- if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) {
+ if (drive->atapi_flags & IDE_AFLAG_NO_DOORLOCK) {
stat = 0;
} else {
unsigned char cmd[BLK_MAX_CDB];
@@ -160,7 +157,7 @@
(sense->asc == 0x24 || sense->asc == 0x20)) {
printk(KERN_ERR "%s: door locking not supported\n",
drive->name);
- cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK;
+ drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK;
stat = 0;
}
@@ -170,9 +167,9 @@
if (stat == 0) {
if (lockflag)
- cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED;
+ drive->atapi_flags |= IDE_AFLAG_DOOR_LOCKED;
else
- cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED;
+ drive->atapi_flags &= ~IDE_AFLAG_DOOR_LOCKED;
}
return stat;
@@ -250,7 +247,7 @@
struct request_sense sense;
int ret;
- if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0 || !info->toc) {
+ if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0 || !info->toc) {
ret = ide_cd_read_toc(drive, &sense);
if (ret)
return ret;
@@ -308,7 +305,7 @@
* A reset will unlock the door. If it was previously locked,
* lock it again.
*/
- if (cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED)
+ if (drive->atapi_flags & IDE_AFLAG_DOOR_LOCKED)
(void)ide_cd_lockdoor(drive, 1, &sense);
return ret;
@@ -324,7 +321,7 @@
/*
* don't serve cached data, if the toc isn't valid
*/
- if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0)
+ if ((drive->atapi_flags & IDE_AFLAG_TOC_VALID) == 0)
return -EINVAL;
/* Check validity of requested track number. */