[mirror_ubuntu-hirsute-kernel.git] / drivers / ide / ide-floppy_ioctl.c

// SPDX-License-Identifier: GPL-2.0
/*
 * ide-floppy IOCTLs handling.
 */

#include <linux/kernel.h>
#include <linux/ide.h>
#include <linux/compat.h>
#include <linux/cdrom.h>
#include <linux/mutex.h>

#include <asm/unaligned.h>

#include <scsi/scsi_ioctl.h>

#include "ide-floppy.h"

/*
 * Obtain the list of formattable capacities.
 * Very similar to ide_floppy_get_capacity, except that we push the capacity
 * descriptors to userland, instead of our own structures.
 *
 * Userland gives us the following structure:
 *
 * struct idefloppy_format_capacities {
 *	int nformats;
 *	struct {
 *		int nblocks;
 *		int blocksize;
 *	} formats[];
 * };
 *
 * userland initializes nformats to the number of allocated formats[] records.
 * On exit we set nformats to the number of records we've actually initialized.
 */

static DEFINE_MUTEX(ide_floppy_ioctl_mutex);
static int ide_floppy_get_format_capacities(ide_drive_t *drive,
					    struct ide_atapi_pc *pc,
					    int __user *arg)
{
	struct ide_disk_obj *floppy = drive->driver_data;
	int i, blocks, length, u_array_size, u_index;
	int __user *argp;
	u8 pc_buf[256], header_len, desc_cnt;

	if (get_user(u_array_size, arg))
		return -EFAULT;

	if (u_array_size <= 0)
		return -EINVAL;

	ide_floppy_create_read_capacity_cmd(pc);

	if (ide_queue_pc_tail(drive, floppy->disk, pc, pc_buf, pc->req_xfer)) {
		printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
		return -EIO;
	}

	header_len = pc_buf[3];
	desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */

	u_index = 0;
	argp = arg + 1;

	/*
	 * We always skip the first capacity descriptor.  That's the current
	 * capacity.  We are interested in the remaining descriptors, the
	 * formattable capacities.
	 */
	for (i = 1; i < desc_cnt; i++) {
		unsigned int desc_start = 4 + i*8;

		if (u_index >= u_array_size)
			break;	/* User-supplied buffer too small */

		blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
		length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);

		if (put_user(blocks, argp))
			return -EFAULT;

		++argp;

		if (put_user(length, argp))
			return -EFAULT;

		++argp;

		++u_index;
	}

	if (put_user(u_index, arg))
		return -EFAULT;

	return 0;
}

static void ide_floppy_create_format_unit_cmd(struct ide_atapi_pc *pc,
					      u8 *buf, int b, int l,
					      int flags)
{
	ide_init_pc(pc);
	pc->c[0] = GPCMD_FORMAT_UNIT;
	pc->c[1] = 0x17;

	memset(buf, 0, 12);
	buf[1] = 0xA2;
	/* Default format list header, u8 1: FOV/DCRT/IMM bits set */

	if (flags & 1)				/* Verify bit on... */
		buf[1] ^= 0x20;			/* ... turn off DCRT bit */
	buf[3] = 8;

	put_unaligned(cpu_to_be32(b), (unsigned int *)(&buf[4]));
	put_unaligned(cpu_to_be32(l), (unsigned int *)(&buf[8]));
	pc->req_xfer = 12;
	pc->flags |= PC_FLAG_WRITING;
}

static int ide_floppy_get_sfrp_bit(ide_drive_t *drive, struct ide_atapi_pc *pc)
{
	struct ide_disk_obj *floppy = drive->driver_data;
	u8 buf[20];

	drive->atapi_flags &= ~IDE_AFLAG_SRFP;

	ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_CAPABILITIES_PAGE);
	pc->flags |= PC_FLAG_SUPPRESS_ERROR;

	if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))
		return 1;

	if (buf[8 + 2] & 0x40)
		drive->atapi_flags |= IDE_AFLAG_SRFP;

	return 0;
}

static int ide_floppy_format_unit(ide_drive_t *drive, struct ide_atapi_pc *pc,
				  int __user *arg)
{
	struct ide_disk_obj *floppy = drive->driver_data;
	u8 buf[12];
	int blocks, length, flags, err = 0;

	if (floppy->openers > 1) {
		/* Don't format if someone is using the disk */
		drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
		return -EBUSY;
	}

	drive->dev_flags |= IDE_DFLAG_FORMAT_IN_PROGRESS;

	/*
	 * Send ATAPI_FORMAT_UNIT to the drive.
	 *
	 * Userland gives us the following structure:
	 *
	 * struct idefloppy_format_command {
	 *        int nblocks;
	 *        int blocksize;
	 *        int flags;
	 *        } ;
	 *
	 * flags is a bitmask, currently, the only defined flag is:
	 *
	 *        0x01 - verify media after format.
	 */
	if (get_user(blocks, arg) ||
			get_user(length, arg+1) ||
			get_user(flags, arg+2)) {
		err = -EFAULT;
		goto out;
	}

	ide_floppy_get_sfrp_bit(drive, pc);
	ide_floppy_create_format_unit_cmd(pc, buf, blocks, length, flags);

	if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))
		err = -EIO;

out:
	if (err)
		drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
	return err;
}

/*
 * Get ATAPI_FORMAT_UNIT progress indication.
 *
 * Userland gives a pointer to an int.  The int is set to a progress
 * indicator 0-65536, with 65536=100%.
 *
 * If the drive does not support format progress indication, we just check
 * the dsc bit, and return either 0 or 65536.
 */

static int ide_floppy_get_format_progress(ide_drive_t *drive,
					  struct ide_atapi_pc *pc,
					  int __user *arg)
{
	struct ide_disk_obj *floppy = drive->driver_data;
	u8 sense_buf[18];
	int progress_indication = 0x10000;

	if (drive->atapi_flags & IDE_AFLAG_SRFP) {
		ide_create_request_sense_cmd(drive, pc);
		if (ide_queue_pc_tail(drive, floppy->disk, pc, sense_buf,
				      pc->req_xfer))
			return -EIO;

		if (floppy->sense_key == 2 &&
		    floppy->asc == 4 &&
		    floppy->ascq == 4)
			progress_indication = floppy->progress_indication;

		/* Else assume format_unit has finished, and we're at 0x10000 */
	} else {
		ide_hwif_t *hwif = drive->hwif;
		unsigned long flags;
		u8 stat;

		local_irq_save(flags);
		stat = hwif->tp_ops->read_status(hwif);
		local_irq_restore(flags);

		progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000;
	}

	if (put_user(progress_indication, arg))
		return -EFAULT;

	return 0;
}

static int ide_floppy_lockdoor(ide_drive_t *drive, struct ide_atapi_pc *pc,
			       unsigned long arg, unsigned int cmd)
{
	struct ide_disk_obj *floppy = drive->driver_data;
	struct gendisk *disk = floppy->disk;
	int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0;

	if (floppy->openers > 1)
		return -EBUSY;

	ide_set_media_lock(drive, disk, prevent);

	if (cmd == CDROMEJECT)
		ide_do_start_stop(drive, disk, 2);

	return 0;
}

static int ide_floppy_format_ioctl(ide_drive_t *drive, struct ide_atapi_pc *pc,
				   fmode_t mode, unsigned int cmd,
				   void __user *argp)
{
	switch (cmd) {
	case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
		return 0;
	case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
		return ide_floppy_get_format_capacities(drive, pc, argp);
	case IDEFLOPPY_IOCTL_FORMAT_START:
		if (!(mode & FMODE_WRITE))
			return -EPERM;
		return ide_floppy_format_unit(drive, pc, (int __user *)argp);
	case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
		return ide_floppy_get_format_progress(drive, pc, argp);
	default:
		return -ENOTTY;
	}
}

int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,
		     fmode_t mode, unsigned int cmd, unsigned long arg)
{
	struct ide_atapi_pc pc;
	void __user *argp = (void __user *)arg;
	int err;

	mutex_lock(&ide_floppy_ioctl_mutex);
	if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) {
		err = ide_floppy_lockdoor(drive, &pc, arg, cmd);
		goto out;
	}

	err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);
	if (err != -ENOTTY)
		goto out;

	/*
	 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
	 * and CDROM_SEND_PACKET (legacy) ioctls
	 */
	if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
		err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);

	if (err == -ENOTTY)
		err = generic_ide_ioctl(drive, bdev, cmd, arg);

out:
	mutex_unlock(&ide_floppy_ioctl_mutex);
	return err;
}

#ifdef CONFIG_COMPAT
int ide_floppy_compat_ioctl(ide_drive_t *drive, struct block_device *bdev,
			    fmode_t mode, unsigned int cmd, unsigned long arg)
{
	struct ide_atapi_pc pc;
	void __user *argp = compat_ptr(arg);
	int err;

	mutex_lock(&ide_floppy_ioctl_mutex);
	if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) {
		err = ide_floppy_lockdoor(drive, &pc, arg, cmd);
		goto out;
	}

	err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);
	if (err != -ENOTTY)
		goto out;

	/*
	 * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
	 * and CDROM_SEND_PACKET (legacy) ioctls
	 */
	if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
		err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);

	if (err == -ENOTTY)
		err = generic_ide_ioctl(drive, bdev, cmd, arg);

out:
	mutex_unlock(&ide_floppy_ioctl_mutex);
	return err;
}
#endif
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
0127854d BZ	2	/*
	3	* ide-floppy IOCTLs handling.
	4	*/
	5
	6	#include <linux/kernel.h>
	7	#include <linux/ide.h>
c103d6ee	8	#include <linux/compat.h>
0127854d	9	#include <linux/cdrom.h>
2a48fc0a	10	#include <linux/mutex.h>
0127854d BZ	11
	12	#include <asm/unaligned.h>
	13
	14	#include <scsi/scsi_ioctl.h>
	15
	16	#include "ide-floppy.h"
	17
	18	/*
	19	* Obtain the list of formattable capacities.
	20	* Very similar to ide_floppy_get_capacity, except that we push the capacity
	21	* descriptors to userland, instead of our own structures.
	22	*
	23	* Userland gives us the following structure:
	24	*
	25	* struct idefloppy_format_capacities {
	26	* int nformats;
	27	* struct {
	28	* int nblocks;
	29	* int blocksize;
	30	* } formats[];
	31	* };
	32	*
	33	* userland initializes nformats to the number of allocated formats[] records.
	34	* On exit we set nformats to the number of records we've actually initialized.
	35	*/
	36
2a48fc0a	37	static DEFINE_MUTEX(ide_floppy_ioctl_mutex);
07bd3f47 LT	38	static int ide_floppy_get_format_capacities(ide_drive_t *drive,
	39	struct ide_atapi_pc *pc,
	40	int __user *arg)
0127854d	41	{
806f80a6	42	struct ide_disk_obj *floppy = drive->driver_data;
0127854d BZ	43	int i, blocks, length, u_array_size, u_index;
0127854d BZ	44	int __user *argp;
41fa9f86	45	u8 pc_buf[256], header_len, desc_cnt;
0127854d BZ	46
	47	if (get_user(u_array_size, arg))
	48	return -EFAULT;
	49
	50	if (u_array_size <= 0)
	51	return -EINVAL;
	52
07bd3f47	53	ide_floppy_create_read_capacity_cmd(pc);
41fa9f86	54
b13345f3	55	if (ide_queue_pc_tail(drive, floppy->disk, pc, pc_buf, pc->req_xfer)) {
0127854d BZ	56	printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
	57	return -EIO;
	58	}
	59
b13345f3	60	header_len = pc_buf[3];
0127854d BZ	61	desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
	62
	63	u_index = 0;
	64	argp = arg + 1;
	65
	66	/*
	67	* We always skip the first capacity descriptor. That's the current
	68	* capacity. We are interested in the remaining descriptors, the
	69	* formattable capacities.
	70	*/
	71	for (i = 1; i < desc_cnt; i++) {
	72	unsigned int desc_start = 4 + i*8;
	73
	74	if (u_index >= u_array_size)
	75	break; /* User-supplied buffer too small */
	76
b13345f3 BP	77	blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
b13345f3 BP	78	length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
0127854d BZ	79
	80	if (put_user(blocks, argp))
	81	return -EFAULT;
	82
	83	++argp;
	84
	85	if (put_user(length, argp))
	86	return -EFAULT;
	87
	88	++argp;
	89
	90	++u_index;
	91	}
	92
	93	if (put_user(u_index, arg))
	94	return -EFAULT;
	95
	96	return 0;
	97	}
	98
5122e517 BP	99	static void ide_floppy_create_format_unit_cmd(struct ide_atapi_pc *pc,
	100	u8 *buf, int b, int l,
	101	int flags)
0127854d BZ	102	{
	103	ide_init_pc(pc);
	104	pc->c[0] = GPCMD_FORMAT_UNIT;
	105	pc->c[1] = 0x17;
	106
5122e517 BP	107	memset(buf, 0, 12);
5122e517 BP	108	buf[1] = 0xA2;
0127854d BZ	109	/* Default format list header, u8 1: FOV/DCRT/IMM bits set */
	110
	111	if (flags & 1) /* Verify bit on... */
5122e517 BP	112	buf[1] ^= 0x20; /* ... turn off DCRT bit */
5122e517 BP	113	buf[3] = 8;
0127854d	114
5122e517 BP	115	put_unaligned(cpu_to_be32(b), (unsigned int *)(&buf[4]));
	116	put_unaligned(cpu_to_be32(l), (unsigned int *)(&buf[8]));
	117	pc->req_xfer = 12;
0127854d BZ	118	pc->flags \|= PC_FLAG_WRITING;
	119	}
	120
07bd3f47	121	static int ide_floppy_get_sfrp_bit(ide_drive_t drive, struct ide_atapi_pc pc)
0127854d	122	{
0df96277	123	struct ide_disk_obj *floppy = drive->driver_data;
802e6634	124	u8 buf[20];
0127854d BZ	125
	126	drive->atapi_flags &= ~IDE_AFLAG_SRFP;
	127
07bd3f47 LT	128	ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_CAPABILITIES_PAGE);
07bd3f47 LT	129	pc->flags \|= PC_FLAG_SUPPRESS_ERROR;
0127854d	130
802e6634	131	if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))
0127854d BZ	132	return 1;
0127854d BZ	133
802e6634	134	if (buf[8 + 2] & 0x40)
0127854d BZ	135	drive->atapi_flags \|= IDE_AFLAG_SRFP;
	136
	137	return 0;
	138	}
	139
07bd3f47 LT	140	static int ide_floppy_format_unit(ide_drive_t drive, struct ide_atapi_pc pc,
07bd3f47 LT	141	int __user *arg)
0127854d	142	{
0df96277	143	struct ide_disk_obj *floppy = drive->driver_data;
5122e517	144	u8 buf[12];
0127854d BZ	145	int blocks, length, flags, err = 0;
	146
	147	if (floppy->openers > 1) {
	148	/* Don't format if someone is using the disk */
e0128628	149	drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
0127854d BZ	150	return -EBUSY;
	151	}
	152
e0128628	153	drive->dev_flags \|= IDE_DFLAG_FORMAT_IN_PROGRESS;
0127854d BZ	154
	155	/*
	156	* Send ATAPI_FORMAT_UNIT to the drive.
	157	*
	158	* Userland gives us the following structure:
	159	*
	160	* struct idefloppy_format_command {
	161	* int nblocks;
	162	* int blocksize;
	163	* int flags;
	164	* } ;
	165	*
	166	* flags is a bitmask, currently, the only defined flag is:
	167	*
	168	* 0x01 - verify media after format.
	169	*/
	170	if (get_user(blocks, arg) \|\|
	171	get_user(length, arg+1) \|\|
	172	get_user(flags, arg+2)) {
	173	err = -EFAULT;
	174	goto out;
	175	}
	176
07bd3f47	177	ide_floppy_get_sfrp_bit(drive, pc);
5122e517	178	ide_floppy_create_format_unit_cmd(pc, buf, blocks, length, flags);
0127854d	179
5122e517	180	if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))
0127854d BZ	181	err = -EIO;
	182
	183	out:
	184	if (err)
e0128628	185	drive->dev_flags &= ~IDE_DFLAG_FORMAT_IN_PROGRESS;
0127854d BZ	186	return err;
	187	}
	188
	189	/*
	190	* Get ATAPI_FORMAT_UNIT progress indication.
	191	*
	192	* Userland gives a pointer to an int. The int is set to a progress
	193	* indicator 0-65536, with 65536=100%.
	194	*
	195	* If the drive does not support format progress indication, we just check
	196	* the dsc bit, and return either 0 or 65536.
	197	*/
	198
07bd3f47 LT	199	static int ide_floppy_get_format_progress(ide_drive_t *drive,
	200	struct ide_atapi_pc *pc,
	201	int __user *arg)
0127854d	202	{
0df96277	203	struct ide_disk_obj *floppy = drive->driver_data;
60cfab85	204	u8 sense_buf[18];
0127854d BZ	205	int progress_indication = 0x10000;
	206
	207	if (drive->atapi_flags & IDE_AFLAG_SRFP) {
07bd3f47	208	ide_create_request_sense_cmd(drive, pc);
60cfab85	209	if (ide_queue_pc_tail(drive, floppy->disk, pc, sense_buf,
b13345f3	210	pc->req_xfer))
0127854d BZ	211	return -EIO;
	212
	213	if (floppy->sense_key == 2 &&
	214	floppy->asc == 4 &&
	215	floppy->ascq == 4)
	216	progress_indication = floppy->progress_indication;
	217
	218	/* Else assume format_unit has finished, and we're at 0x10000 */
	219	} else {
	220	ide_hwif_t *hwif = drive->hwif;
	221	unsigned long flags;
	222	u8 stat;
	223
	224	local_irq_save(flags);
	225	stat = hwif->tp_ops->read_status(hwif);
	226	local_irq_restore(flags);
	227
	228	progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000;
	229	}
	230
	231	if (put_user(progress_indication, arg))
	232	return -EFAULT;
	233
	234	return 0;
	235	}
	236
5bb1536a BZ	237	static int ide_floppy_lockdoor(ide_drive_t drive, struct ide_atapi_pc pc,
	238	unsigned long arg, unsigned int cmd)
	239	{
0df96277	240	struct ide_disk_obj *floppy = drive->driver_data;
5bb1536a BZ	241	struct gendisk *disk = floppy->disk;
	242	int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0;
	243
	244	if (floppy->openers > 1)
	245	return -EBUSY;
	246
	247	ide_set_media_lock(drive, disk, prevent);
	248
	249	if (cmd == CDROMEJECT)
	250	ide_do_start_stop(drive, disk, 2);
	251
	252	return 0;
	253	}
	254
07bd3f47 LT	255	static int ide_floppy_format_ioctl(ide_drive_t drive, struct ide_atapi_pc pc,
	256	fmode_t mode, unsigned int cmd,
	257	void __user *argp)
0127854d BZ	258	{
	259	switch (cmd) {
	260	case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
	261	return 0;
	262	case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
07bd3f47	263	return ide_floppy_get_format_capacities(drive, pc, argp);
0127854d	264	case IDEFLOPPY_IOCTL_FORMAT_START:
badf8082	265	if (!(mode & FMODE_WRITE))
0127854d	266	return -EPERM;
07bd3f47	267	return ide_floppy_format_unit(drive, pc, (int __user *)argp);
0127854d	268	case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
07bd3f47	269	return ide_floppy_get_format_progress(drive, pc, argp);
0127854d BZ	270	default:
	271	return -ENOTTY;
	272	}
	273	}
5bb1536a	274
badf8082 AV	275	int ide_floppy_ioctl(ide_drive_t drive, struct block_device bdev,
badf8082 AV	276	fmode_t mode, unsigned int cmd, unsigned long arg)
5bb1536a	277	{
5bb1536a BZ	278	struct ide_atapi_pc pc;
	279	void __user argp = (void __user )arg;
	280	int err;
	281
2a48fc0a	282	mutex_lock(&ide_floppy_ioctl_mutex);
8a6cfeb6 AB	283	if (cmd == CDROMEJECT \|\| cmd == CDROM_LOCKDOOR) {
	284	err = ide_floppy_lockdoor(drive, &pc, arg, cmd);
	285	goto out;
	286	}
5bb1536a	287
07bd3f47	288	err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);
5bb1536a	289	if (err != -ENOTTY)
8a6cfeb6	290	goto out;
5bb1536a BZ	291
	292	/*
	293	* skip SCSI_IOCTL_SEND_COMMAND (deprecated)
	294	* and CDROM_SEND_PACKET (legacy) ioctls
	295	*/
	296	if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
577ebb37	297	err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
5bb1536a BZ	298
5bb1536a BZ	299	if (err == -ENOTTY)
1bddd9e6	300	err = generic_ide_ioctl(drive, bdev, cmd, arg);
5bb1536a	301
8a6cfeb6	302	out:
2a48fc0a	303	mutex_unlock(&ide_floppy_ioctl_mutex);
5bb1536a BZ	304	return err;
5bb1536a BZ	305	}
c103d6ee AB	306
	307	#ifdef CONFIG_COMPAT
	308	int ide_floppy_compat_ioctl(ide_drive_t drive, struct block_device bdev,
	309	fmode_t mode, unsigned int cmd, unsigned long arg)
	310	{
	311	struct ide_atapi_pc pc;
	312	void __user *argp = compat_ptr(arg);
	313	int err;
	314
	315	mutex_lock(&ide_floppy_ioctl_mutex);
	316	if (cmd == CDROMEJECT \|\| cmd == CDROM_LOCKDOOR) {
	317	err = ide_floppy_lockdoor(drive, &pc, arg, cmd);
	318	goto out;
	319	}
	320
	321	err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);
	322	if (err != -ENOTTY)
	323	goto out;
	324
	325	/*
	326	* skip SCSI_IOCTL_SEND_COMMAND (deprecated)
	327	* and CDROM_SEND_PACKET (legacy) ioctls
	328	*/
	329	if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
	330	err = scsi_cmd_blk_ioctl(bdev, mode, cmd, argp);
	331
1df23c6f AB	332	if (err == -ENOTTY)
	333	err = generic_ide_ioctl(drive, bdev, cmd, arg);
	334
c103d6ee AB	335	out:
	336	mutex_unlock(&ide_floppy_ioctl_mutex);
	337	return err;
	338	}
	339	#endif