Revision 475049809977bf3975d78f2d2fd992e19ce2d59e authored by Roel Kluin on 10 March 2009, 19:55:45 UTC, committed by Linus Torvalds on 10 March 2009, 22:55:10 UTC
get_nid_for_pfn() returns int Presumably the (nid < 0) case has never happened. We do know that it is happening on one system while creating a symlink for a memory section so it should also happen on the same system if unregister_mem_sect_under_nodes() were called to remove the same symlink. The test was actually added in response to a problem with an earlier version reported by Yasunori Goto where one or more of the leading pages of a memory section on the 2nd node of one of his systems was uninitialized because I believe they coincided with a memory hole. That earlier version did not ignore uninitialized pages and determined the nid by considering only the 1st page of each memory section. This caused the symlink to the 1st memory section on the 2nd node to be incorrectly created in /sys/devices/system/node/node0 instead of /sys/devices/system/node/node1. The problem was fixed by adding the test to skip over uninitialized pages. I suspect we have not seen any reports of the non-removal of a symlink due to the incorrect declaration of the nid variable in unregister_mem_sect_under_nodes() because - systems where a memory section could have an uninitialized range of leading pages are probably rare. - memory remove is probably not done very frequently on the systems that are capable of demonstrating the problem. - lingering symlink(s) that should have been removed may have simply gone unnoticed. [garyhade@us.ibm.com: wrote changelog] Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 1abaf33
ide-disk.c
/*
* Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
* Copyright (C) 1998-2002 Linux ATA Development
* Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2003 Red Hat
* Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
*/
/*
* Mostly written by Mark Lord <mlord@pobox.com>
* and Gadi Oxman <gadio@netvision.net.il>
* and Andre Hedrick <andre@linux-ide.org>
*
* This is the IDE/ATA disk driver, as evolved from hd.c and ide.c.
*/
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/genhd.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/leds.h>
#include <linux/ide.h>
#include <linux/hdreg.h>
#include <asm/byteorder.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/div64.h>
#include "ide-disk.h"
static const u8 ide_rw_cmds[] = {
ATA_CMD_READ_MULTI,
ATA_CMD_WRITE_MULTI,
ATA_CMD_READ_MULTI_EXT,
ATA_CMD_WRITE_MULTI_EXT,
ATA_CMD_PIO_READ,
ATA_CMD_PIO_WRITE,
ATA_CMD_PIO_READ_EXT,
ATA_CMD_PIO_WRITE_EXT,
ATA_CMD_READ,
ATA_CMD_WRITE,
ATA_CMD_READ_EXT,
ATA_CMD_WRITE_EXT,
};
static const u8 ide_data_phases[] = {
TASKFILE_MULTI_IN,
TASKFILE_MULTI_OUT,
TASKFILE_IN,
TASKFILE_OUT,
TASKFILE_IN_DMA,
TASKFILE_OUT_DMA,
};
static void ide_tf_set_cmd(ide_drive_t *drive, ide_task_t *task, u8 dma)
{
u8 index, lba48, write;
lba48 = (task->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0;
write = (task->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0;
if (dma)
index = 8;
else
index = drive->mult_count ? 0 : 4;
task->tf.command = ide_rw_cmds[index + lba48 + write];
if (dma)
index = 8; /* fixup index */
task->data_phase = ide_data_phases[index / 2 + write];
}
/*
* __ide_do_rw_disk() issues READ and WRITE commands to a disk,
* using LBA if supported, or CHS otherwise, to address sectors.
*/
static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
sector_t block)
{
ide_hwif_t *hwif = drive->hwif;
u16 nsectors = (u16)rq->nr_sectors;
u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
u8 dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
ide_task_t task;
struct ide_taskfile *tf = &task.tf;
ide_startstop_t rc;
if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) {
if (block + rq->nr_sectors > 1ULL << 28)
dma = 0;
else
lba48 = 0;
}
if (!dma) {
ide_init_sg_cmd(drive, rq);
ide_map_sg(drive, rq);
}
memset(&task, 0, sizeof(task));
task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
if (drive->dev_flags & IDE_DFLAG_LBA) {
if (lba48) {
pr_debug("%s: LBA=0x%012llx\n", drive->name,
(unsigned long long)block);
tf->hob_nsect = (nsectors >> 8) & 0xff;
tf->hob_lbal = (u8)(block >> 24);
if (sizeof(block) != 4) {
tf->hob_lbam = (u8)((u64)block >> 32);
tf->hob_lbah = (u8)((u64)block >> 40);
}
tf->nsect = nsectors & 0xff;
tf->lbal = (u8) block;
tf->lbam = (u8)(block >> 8);
tf->lbah = (u8)(block >> 16);
task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
} else {
tf->nsect = nsectors & 0xff;
tf->lbal = block;
tf->lbam = block >>= 8;
tf->lbah = block >>= 8;
tf->device = (block >> 8) & 0xf;
}
tf->device |= ATA_LBA;
} else {
unsigned int sect, head, cyl, track;
track = (int)block / drive->sect;
sect = (int)block % drive->sect + 1;
head = track % drive->head;
cyl = track / drive->head;
pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect);
tf->nsect = nsectors & 0xff;
tf->lbal = sect;
tf->lbam = cyl;
tf->lbah = cyl >> 8;
tf->device = head;
}
if (rq_data_dir(rq))
task.tf_flags |= IDE_TFLAG_WRITE;
ide_tf_set_cmd(drive, &task, dma);
if (!dma)
hwif->data_phase = task.data_phase;
task.rq = rq;
rc = do_rw_taskfile(drive, &task);
if (rc == ide_stopped && dma) {
/* fallback to PIO */
task.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK;
ide_tf_set_cmd(drive, &task, 0);
hwif->data_phase = task.data_phase;
ide_init_sg_cmd(drive, rq);
rc = do_rw_taskfile(drive, &task);
}
return rc;
}
/*
* 268435455 == 137439 MB or 28bit limit
* 320173056 == 163929 MB or 48bit addressing
* 1073741822 == 549756 MB or 48bit addressing fake drive
*/
static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
sector_t block)
{
ide_hwif_t *hwif = drive->hwif;
BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
if (!blk_fs_request(rq)) {
blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command");
ide_end_request(drive, 0, 0);
return ide_stopped;
}
ledtrig_ide_activity();
pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n",
drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
(unsigned long long)block, rq->nr_sectors,
(unsigned long)rq->buffer);
if (hwif->rw_disk)
hwif->rw_disk(drive, rq);
return __ide_do_rw_disk(drive, rq, block);
}
/*
* Queries for true maximum capacity of the drive.
* Returns maximum LBA address (> 0) of the drive, 0 if failed.
*/
static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
{
ide_task_t args;
struct ide_taskfile *tf = &args.tf;
u64 addr = 0;
/* Create IDE/ATA command request structure */
memset(&args, 0, sizeof(ide_task_t));
if (lba48)
tf->command = ATA_CMD_READ_NATIVE_MAX_EXT;
else
tf->command = ATA_CMD_READ_NATIVE_MAX;
tf->device = ATA_LBA;
args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
if (lba48)
args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
/* submit command request */
ide_no_data_taskfile(drive, &args);
/* if OK, compute maximum address value */
if ((tf->status & 0x01) == 0)
addr = ide_get_lba_addr(tf, lba48) + 1;
return addr;
}
/*
* Sets maximum virtual LBA address of the drive.
* Returns new maximum virtual LBA address (> 0) or 0 on failure.
*/
static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
{
ide_task_t args;
struct ide_taskfile *tf = &args.tf;
u64 addr_set = 0;
addr_req--;
/* Create IDE/ATA command request structure */
memset(&args, 0, sizeof(ide_task_t));
tf->lbal = (addr_req >> 0) & 0xff;
tf->lbam = (addr_req >>= 8) & 0xff;
tf->lbah = (addr_req >>= 8) & 0xff;
if (lba48) {
tf->hob_lbal = (addr_req >>= 8) & 0xff;
tf->hob_lbam = (addr_req >>= 8) & 0xff;
tf->hob_lbah = (addr_req >>= 8) & 0xff;
tf->command = ATA_CMD_SET_MAX_EXT;
} else {
tf->device = (addr_req >>= 8) & 0x0f;
tf->command = ATA_CMD_SET_MAX;
}
tf->device |= ATA_LBA;
args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
if (lba48)
args.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_HOB);
/* submit command request */
ide_no_data_taskfile(drive, &args);
/* if OK, compute maximum address value */
if ((tf->status & 0x01) == 0)
addr_set = ide_get_lba_addr(tf, lba48) + 1;
return addr_set;
}
static unsigned long long sectors_to_MB(unsigned long long n)
{
n <<= 9; /* make it bytes */
do_div(n, 1000000); /* make it MB */
return n;
}
/*
* Some disks report total number of sectors instead of
* maximum sector address. We list them here.
*/
static const struct drive_list_entry hpa_list[] = {
{ "ST340823A", NULL },
{ "ST320413A", NULL },
{ "ST310211A", NULL },
{ NULL, NULL }
};
static void idedisk_check_hpa(ide_drive_t *drive)
{
unsigned long long capacity, set_max;
int lba48 = ata_id_lba48_enabled(drive->id);
capacity = drive->capacity64;
set_max = idedisk_read_native_max_address(drive, lba48);
if (ide_in_drive_list(drive->id, hpa_list)) {
/*
* Since we are inclusive wrt to firmware revisions do this
* extra check and apply the workaround only when needed.
*/
if (set_max == capacity + 1)
set_max--;
}
if (set_max <= capacity)
return;
printk(KERN_INFO "%s: Host Protected Area detected.\n"
"\tcurrent capacity is %llu sectors (%llu MB)\n"
"\tnative capacity is %llu sectors (%llu MB)\n",
drive->name,
capacity, sectors_to_MB(capacity),
set_max, sectors_to_MB(set_max));
set_max = idedisk_set_max_address(drive, set_max, lba48);
if (set_max) {
drive->capacity64 = set_max;
printk(KERN_INFO "%s: Host Protected Area disabled.\n",
drive->name);
}
}
static int ide_disk_get_capacity(ide_drive_t *drive)
{
u16 *id = drive->id;
int lba;
if (ata_id_lba48_enabled(id)) {
/* drive speaks 48-bit LBA */
lba = 1;
drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
} else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) {
/* drive speaks 28-bit LBA */
lba = 1;
drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
} else {
/* drive speaks boring old 28-bit CHS */
lba = 0;
drive->capacity64 = drive->cyl * drive->head * drive->sect;
}
if (lba) {
drive->dev_flags |= IDE_DFLAG_LBA;
/*
* If this device supports the Host Protected Area feature set,
* then we may need to change our opinion about its capacity.
*/
if (ata_id_hpa_enabled(id))
idedisk_check_hpa(drive);
}
/* limit drive capacity to 137GB if LBA48 cannot be used */
if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 &&
drive->capacity64 > 1ULL << 28) {
printk(KERN_WARNING "%s: cannot use LBA48 - full capacity "
"%llu sectors (%llu MB)\n",
drive->name, (unsigned long long)drive->capacity64,
sectors_to_MB(drive->capacity64));
drive->capacity64 = 1ULL << 28;
}
if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) &&
(drive->dev_flags & IDE_DFLAG_LBA48)) {
if (drive->capacity64 > 1ULL << 28) {
printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode"
" will be used for accessing sectors "
"> %u\n", drive->name, 1 << 28);
} else
drive->dev_flags &= ~IDE_DFLAG_LBA48;
}
return 0;
}
static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
{
ide_drive_t *drive = q->queuedata;
ide_task_t *task = kmalloc(sizeof(*task), GFP_ATOMIC);
/* FIXME: map struct ide_taskfile on rq->cmd[] */
BUG_ON(task == NULL);
memset(task, 0, sizeof(*task));
if (ata_id_flush_ext_enabled(drive->id) &&
(drive->capacity64 >= (1UL << 28)))
task->tf.command = ATA_CMD_FLUSH_EXT;
else
task->tf.command = ATA_CMD_FLUSH;
task->tf_flags = IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE |
IDE_TFLAG_DYN;
task->data_phase = TASKFILE_NO_DATA;
rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
rq->cmd_flags |= REQ_SOFTBARRIER;
rq->special = task;
}
ide_devset_get(multcount, mult_count);
/*
* This is tightly woven into the driver->do_special can not touch.
* DON'T do it again until a total personality rewrite is committed.
*/
static int set_multcount(ide_drive_t *drive, int arg)
{
struct request *rq;
int error;
if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
return -EINVAL;
if (drive->special.b.set_multmode)
return -EBUSY;
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
drive->mult_req = arg;
drive->special.b.set_multmode = 1;
error = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
return (drive->mult_count == arg) ? 0 : -EIO;
}
ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR);
static int set_nowerr(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 1)
return -EINVAL;
if (arg)
drive->dev_flags |= IDE_DFLAG_NOWERR;
else
drive->dev_flags &= ~IDE_DFLAG_NOWERR;
drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
return 0;
}
static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect)
{
ide_task_t task;
memset(&task, 0, sizeof(task));
task.tf.feature = feature;
task.tf.nsect = nsect;
task.tf.command = ATA_CMD_SET_FEATURES;
task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
return ide_no_data_taskfile(drive, &task);
}
static void update_ordered(ide_drive_t *drive)
{
u16 *id = drive->id;
unsigned ordered = QUEUE_ORDERED_NONE;
prepare_flush_fn *prep_fn = NULL;
if (drive->dev_flags & IDE_DFLAG_WCACHE) {
unsigned long long capacity;
int barrier;
/*
* We must avoid issuing commands a drive does not
* understand or we may crash it. We check flush cache
* is supported. We also check we have the LBA48 flush
* cache if the drive capacity is too large. By this
* time we have trimmed the drive capacity if LBA48 is
* not available so we don't need to recheck that.
*/
capacity = ide_gd_capacity(drive);
barrier = ata_id_flush_enabled(id) &&
(drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 &&
((drive->dev_flags & IDE_DFLAG_LBA48) == 0 ||
capacity <= (1ULL << 28) ||
ata_id_flush_ext_enabled(id));
printk(KERN_INFO "%s: cache flushes %ssupported\n",
drive->name, barrier ? "" : "not ");
if (barrier) {
ordered = QUEUE_ORDERED_DRAIN_FLUSH;
prep_fn = idedisk_prepare_flush;
}
} else
ordered = QUEUE_ORDERED_DRAIN;
blk_queue_ordered(drive->queue, ordered, prep_fn);
}
ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
static int set_wcache(ide_drive_t *drive, int arg)
{
int err = 1;
if (arg < 0 || arg > 1)
return -EINVAL;
if (ata_id_flush_enabled(drive->id)) {
err = ide_do_setfeature(drive,
arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0);
if (err == 0) {
if (arg)
drive->dev_flags |= IDE_DFLAG_WCACHE;
else
drive->dev_flags &= ~IDE_DFLAG_WCACHE;
}
}
update_ordered(drive);
return err;
}
static int do_idedisk_flushcache(ide_drive_t *drive)
{
ide_task_t args;
memset(&args, 0, sizeof(ide_task_t));
if (ata_id_flush_ext_enabled(drive->id))
args.tf.command = ATA_CMD_FLUSH_EXT;
else
args.tf.command = ATA_CMD_FLUSH;
args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
return ide_no_data_taskfile(drive, &args);
}
ide_devset_get(acoustic, acoustic);
static int set_acoustic(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 254)
return -EINVAL;
ide_do_setfeature(drive,
arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg);
drive->acoustic = arg;
return 0;
}
ide_devset_get_flag(addressing, IDE_DFLAG_LBA48);
/*
* drive->addressing:
* 0: 28-bit
* 1: 48-bit
* 2: 48-bit capable doing 28-bit
*/
static int set_addressing(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 2)
return -EINVAL;
if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
ata_id_lba48_enabled(drive->id) == 0))
return -EIO;
if (arg == 2)
arg = 0;
if (arg)
drive->dev_flags |= IDE_DFLAG_LBA48;
else
drive->dev_flags &= ~IDE_DFLAG_LBA48;
return 0;
}
ide_ext_devset_rw(acoustic, acoustic);
ide_ext_devset_rw(address, addressing);
ide_ext_devset_rw(multcount, multcount);
ide_ext_devset_rw(wcache, wcache);
ide_ext_devset_rw_sync(nowerr, nowerr);
static int ide_disk_check(ide_drive_t *drive, const char *s)
{
return 1;
}
static void ide_disk_setup(ide_drive_t *drive)
{
struct ide_disk_obj *idkp = drive->driver_data;
struct request_queue *q = drive->queue;
ide_hwif_t *hwif = drive->hwif;
u16 *id = drive->id;
char *m = (char *)&id[ATA_ID_PROD];
unsigned long long capacity;
ide_proc_register_driver(drive, idkp->driver);
if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0)
return;
if (drive->dev_flags & IDE_DFLAG_REMOVABLE) {
/*
* Removable disks (eg. SYQUEST); ignore 'WD' drives
*/
if (m[0] != 'W' || m[1] != 'D')
drive->dev_flags |= IDE_DFLAG_DOORLOCKING;
}
(void)set_addressing(drive, 1);
if (drive->dev_flags & IDE_DFLAG_LBA48) {
int max_s = 2048;
if (max_s > hwif->rqsize)
max_s = hwif->rqsize;
blk_queue_max_sectors(q, max_s);
}
printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name,
q->max_sectors / 2);
if (ata_id_is_ssd(id))
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
/* calculate drive capacity, and select LBA if possible */
ide_disk_get_capacity(drive);
/*
* if possible, give fdisk access to more of the drive,
* by correcting bios_cyls:
*/
capacity = ide_gd_capacity(drive);
if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) {
if (ata_id_lba48_enabled(drive->id)) {
/* compatibility */
drive->bios_sect = 63;
drive->bios_head = 255;
}
if (drive->bios_sect && drive->bios_head) {
unsigned int cap0 = capacity; /* truncate to 32 bits */
unsigned int cylsz, cyl;
if (cap0 != capacity)
drive->bios_cyl = 65535;
else {
cylsz = drive->bios_sect * drive->bios_head;
cyl = cap0 / cylsz;
if (cyl > 65535)
cyl = 65535;
if (cyl > drive->bios_cyl)
drive->bios_cyl = cyl;
}
}
}
printk(KERN_INFO "%s: %llu sectors (%llu MB)",
drive->name, capacity, sectors_to_MB(capacity));
/* Only print cache size when it was specified */
if (id[ATA_ID_BUF_SIZE])
printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2);
printk(KERN_CONT ", CHS=%d/%d/%d\n",
drive->bios_cyl, drive->bios_head, drive->bios_sect);
/* write cache enabled? */
if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
drive->dev_flags |= IDE_DFLAG_WCACHE;
set_wcache(drive, 1);
if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 &&
(drive->head == 0 || drive->head > 16)) {
printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n",
drive->name, drive->head);
drive->dev_flags &= ~IDE_DFLAG_ATTACH;
} else
drive->dev_flags |= IDE_DFLAG_ATTACH;
}
static void ide_disk_flush(ide_drive_t *drive)
{
if (ata_id_flush_enabled(drive->id) == 0 ||
(drive->dev_flags & IDE_DFLAG_WCACHE) == 0)
return;
if (do_idedisk_flushcache(drive))
printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
}
static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
{
return 0;
}
static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
int on)
{
ide_task_t task;
int ret;
if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0)
return 0;
memset(&task, 0, sizeof(task));
task.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
ret = ide_no_data_taskfile(drive, &task);
if (ret)
drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
return ret;
}
const struct ide_disk_ops ide_ata_disk_ops = {
.check = ide_disk_check,
.get_capacity = ide_disk_get_capacity,
.setup = ide_disk_setup,
.flush = ide_disk_flush,
.init_media = ide_disk_init_media,
.set_doorlock = ide_disk_set_doorlock,
.do_request = ide_do_rw_disk,
.end_request = ide_end_request,
.ioctl = ide_disk_ioctl,
};
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