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ide-cd: merge cdrom_read_subchannel() into ide_cdrom_get_mcn() 

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-02-01 23:09:24 +01:00
parent a891b1446b
commit 53126b9127
1 changed files with 21 additions and 32 deletions
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53
drivers/ide/ide-cd.c
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@ -2017,25 +2017,6 @@ static int ide_cd_read_tochdr(ide_drive_t *drive, void *arg)
return 0;
}
static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf,
int buflen, struct request_sense *sense)
{
struct request req;
cdrom_prepare_request(drive, &req);
req.sense = sense;
req.data = buf;
req.data_len = buflen;
req.cmd[0] = GPCMD_READ_SUBCHANNEL;
req.cmd[1] = 2; /* MSF addressing */
req.cmd[2] = 0x40; /* request subQ data */
req.cmd[3] = format;
req.cmd[7] = (buflen >> 8);
req.cmd[8] = (buflen & 0xff);
return cdrom_queue_packet_command(drive, &req);
}
/* ATAPI cdrom drives are free to select the speed you request or any slower
rate :-( Requesting too fast a speed will _not_ produce an error. */
static int cdrom_select_speed(ide_drive_t *drive, int speed,
@ -2377,28 +2358,36 @@ int ide_cdrom_get_last_session (struct cdrom_device_info *cdi,
return 0;
}
static
int ide_cdrom_get_mcn (struct cdrom_device_info *cdi,
struct cdrom_mcn *mcn_info)
static int ide_cdrom_get_mcn(struct cdrom_device_info *cdi,
struct cdrom_mcn *mcn_info)
{
int stat;
char mcnbuf[24];
ide_drive_t *drive = cdi->handle;
int stat, mcnlen;
struct request rq;
char buf[24];
/* get MCN */
if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL)))
cdrom_prepare_request(drive, &rq);
rq.data = buf;
rq.data_len = sizeof(buf);
rq.cmd[0] = GPCMD_READ_SUBCHANNEL;
rq.cmd[1] = 2; /* MSF addressing */
rq.cmd[2] = 0x40; /* request subQ data */
rq.cmd[3] = 2; /* format */
rq.cmd[8] = sizeof(buf);
stat = cdrom_queue_packet_command(drive, &rq);
if (stat)
return stat;
memcpy (mcn_info->medium_catalog_number, mcnbuf+9,
sizeof (mcn_info->medium_catalog_number)-1);
mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1]
= '\0';
mcnlen = sizeof(mcn_info->medium_catalog_number) - 1;
memcpy(mcn_info->medium_catalog_number, buf + 9, mcnlen);
mcn_info->medium_catalog_number[mcnlen] = '\0';
return 0;
}
/****************************************************************************
* Other driver requests (open, close, check media change).
*/