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ide: don't use req->special 

Just replace it with a field of the same name in struct ide_req.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2018-11-10 09:30:49 +01:00 committed by Jens Axboe
parent 289d088b66
commit 22ce0a7ccf
12 changed files with 31 additions and 26 deletions
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4
drivers/ide/ide-atapi.c
View File

@ -94,7 +94,7 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = (char *)pc;
ide_req(rq)->special = pc;
if (buf && bufflen) {
error = blk_rq_map_kern(drive->queue, rq, buf, bufflen,
@ -244,7 +244,7 @@ int ide_queue_sense_rq(ide_drive_t *drive, void *special)
return -ENOMEM;
}
sense_rq->special = special;
ide_req(sense_rq)->special = special;
drive->sense_rq_armed = false;
drive->hwif->rq = NULL;

4
drivers/ide/ide-cd.c
View File

@ -211,12 +211,12 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
{
/*
* For ATA_PRIV_SENSE, "rq->special" points to the original
* For ATA_PRIV_SENSE, "ide_req(rq)->special" points to the original
* failed request. Also, the sense data should be read
* directly from rq which might be different from the original
* sense buffer if it got copied during mapping.
*/
struct request *failed = (struct request *)rq->special;
struct request *failed = ide_req(rq)->special;
void *sense = bio_data(rq->bio);
if (failed) {

4
drivers/ide/ide-devsets.c
View File

@ -171,7 +171,7 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
scsi_req(rq)->cmd_len = 5;
scsi_req(rq)->cmd[0] = REQ_DEVSET_EXEC;
*(int *)&scsi_req(rq)->cmd[1] = arg;
rq->special = setting->set;
ide_req(rq)->special = setting->set;
blk_execute_rq(q, NULL, rq, 0);
ret = scsi_req(rq)->result;
@ -182,7 +182,7 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
ide_startstop_t ide_do_devset(ide_drive_t *drive, struct request *rq)
{
int err, (*setfunc)(ide_drive_t *, int) = rq->special;
int err, (*setfunc)(ide_drive_t *, int) = ide_req(rq)->special;
err = setfunc(drive, *(int *)&scsi_req(rq)->cmd[1]);
if (err)

6
drivers/ide/ide-disk.c
View File

@ -434,8 +434,8 @@ static bool idedisk_prep_rq(ide_drive_t *drive, struct request *rq)
if (req_op(rq) != REQ_OP_FLUSH)
return true;
if (rq->special) {
cmd = rq->special;
if (ide_req(rq)->special) {
cmd = ide_req(rq)->special;
memset(cmd, 0, sizeof(*cmd));
} else {
cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
@ -455,7 +455,7 @@ static bool idedisk_prep_rq(ide_drive_t *drive, struct request *rq)
rq->cmd_flags &= ~REQ_OP_MASK;
rq->cmd_flags |= REQ_OP_DRV_OUT;
ide_req(rq)->type = ATA_PRIV_TASKFILE;
rq->special = cmd;
ide_req(rq)->special = cmd;
cmd->rq = rq;
return true;

2
drivers/ide/ide-eh.c
View File

@ -125,7 +125,7 @@ ide_startstop_t ide_error(ide_drive_t *drive, const char *msg, u8 stat)
/* retry only "normal" I/O: */
if (blk_rq_is_passthrough(rq)) {
if (ata_taskfile_request(rq)) {
struct ide_cmd *cmd = rq->special;
struct ide_cmd *cmd = ide_req(rq)->special;
if (cmd)
ide_complete_cmd(drive, cmd, stat, err);

2
drivers/ide/ide-floppy.c
View File

@ -276,7 +276,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
switch (ide_req(rq)->type) {
case ATA_PRIV_MISC:
case ATA_PRIV_SENSE:
pc = (struct ide_atapi_pc *)rq->special;
pc = (struct ide_atapi_pc *)ide_req(rq)->special;
break;
default:
BUG();

14
drivers/ide/ide-io.c
View File

@ -111,7 +111,7 @@ void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err)
}
if (rq && ata_taskfile_request(rq)) {
struct ide_cmd *orig_cmd = rq->special;
struct ide_cmd *orig_cmd = ide_req(rq)->special;
if (cmd->tf_flags & IDE_TFLAG_DYN)
kfree(orig_cmd);
@ -261,7 +261,7 @@ EXPORT_SYMBOL_GPL(ide_init_sg_cmd);
static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
struct request *rq)
{
struct ide_cmd *cmd = rq->special;
struct ide_cmd *cmd = ide_req(rq)->special;
if (cmd) {
if (cmd->protocol == ATA_PROT_PIO) {
@ -352,7 +352,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
if (ata_taskfile_request(rq))
return execute_drive_cmd(drive, rq);
else if (ata_pm_request(rq)) {
struct ide_pm_state *pm = rq->special;
struct ide_pm_state *pm = ide_req(rq)->special;
#ifdef DEBUG_PM
printk("%s: start_power_step(step: %d)\n",
drive->name, pm->pm_step);
@ -460,16 +460,20 @@ blk_status_t ide_queue_rq(struct blk_mq_hw_ctx *hctx,
ide_drive_t *drive = hctx->queue->queuedata;
ide_hwif_t *hwif = drive->hwif;
struct ide_host *host = hwif->host;
struct request *rq = NULL;
struct request *rq = bd->rq;
ide_startstop_t startstop;
if (!(rq->rq_flags & RQF_DONTPREP)) {
rq->rq_flags |= RQF_DONTPREP;
ide_req(rq)->special = NULL;
}
/* HLD do_request() callback might sleep, make sure it's okay */
might_sleep();
if (ide_lock_host(host, hwif))
return BLK_STS_DEV_RESOURCE;
rq = bd->rq;
blk_mq_start_request(rq);
spin_lock_irq(&hwif->lock);

4
drivers/ide/ide-park.c
View File

@ -36,7 +36,7 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
scsi_req(rq)->cmd[0] = REQ_PARK_HEADS;
scsi_req(rq)->cmd_len = 1;
ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = &timeout;
ide_req(rq)->special = &timeout;
blk_execute_rq(q, NULL, rq, 1);
rc = scsi_req(rq)->result ? -EIO : 0;
blk_put_request(rq);
@ -67,7 +67,7 @@ ide_startstop_t ide_do_park_unpark(ide_drive_t *drive, struct request *rq)
memset(&cmd, 0, sizeof(cmd));
if (scsi_req(rq)->cmd[0] == REQ_PARK_HEADS) {
drive->sleep = *(unsigned long *)rq->special;
drive->sleep = *(unsigned long *)ide_req(rq)->special;
drive->dev_flags |= IDE_DFLAG_SLEEPING;
tf->command = ATA_CMD_IDLEIMMEDIATE;
tf->feature = 0x44;

12
drivers/ide/ide-pm.c
View File

@ -21,7 +21,7 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg)
memset(&rqpm, 0, sizeof(rqpm));
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
ide_req(rq)->type = ATA_PRIV_PM_SUSPEND;
rq->special = &rqpm;
ide_req(rq)->special = &rqpm;
rqpm.pm_step = IDE_PM_START_SUSPEND;
if (mesg.event == PM_EVENT_PRETHAW)
mesg.event = PM_EVENT_FREEZE;
@ -82,7 +82,7 @@ int generic_ide_resume(struct device *dev)
memset(&rqpm, 0, sizeof(rqpm));
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, BLK_MQ_REQ_PREEMPT);
ide_req(rq)->type = ATA_PRIV_PM_RESUME;
rq->special = &rqpm;
ide_req(rq)->special = &rqpm;
rqpm.pm_step = IDE_PM_START_RESUME;
rqpm.pm_state = PM_EVENT_ON;
@ -101,7 +101,7 @@ int generic_ide_resume(struct device *dev)
void ide_complete_power_step(ide_drive_t *drive, struct request *rq)
{
struct ide_pm_state *pm = rq->special;
struct ide_pm_state *pm = ide_req(rq)->special;
#ifdef DEBUG_PM
printk(KERN_INFO "%s: complete_power_step(step: %d)\n",
@ -131,7 +131,7 @@ void ide_complete_power_step(ide_drive_t *drive, struct request *rq)
ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
{
struct ide_pm_state *pm = rq->special;
struct ide_pm_state *pm = ide_req(rq)->special;
struct ide_cmd cmd = { };
switch (pm->pm_step) {
@ -203,7 +203,7 @@ out_do_tf:
void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
{
struct request_queue *q = drive->queue;
struct ide_pm_state *pm = rq->special;
struct ide_pm_state *pm = ide_req(rq)->special;
unsigned long flags;
ide_complete_power_step(drive, rq);
@ -228,7 +228,7 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct ide_pm_state *pm = rq->special;
struct ide_pm_state *pm = ide_req(rq)->special;
if (blk_rq_is_private(rq) &&
ide_req(rq)->type == ATA_PRIV_PM_SUSPEND &&

2
drivers/ide/ide-tape.c
View File

@ -639,7 +639,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
goto out;
}
if (req->cmd[13] & REQ_IDETAPE_PC1) {
pc = (struct ide_atapi_pc *)rq->special;
pc = (struct ide_atapi_pc *)ide_req(rq)->special;
req->cmd[13] &= ~(REQ_IDETAPE_PC1);
req->cmd[13] |= REQ_IDETAPE_PC2;
goto out;

2
drivers/ide/ide-taskfile.c
View File

@ -440,7 +440,7 @@ int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
goto put_req;
}
rq->special = cmd;
ide_req(rq)->special = cmd;
cmd->rq = rq;
blk_execute_rq(drive->queue, NULL, rq, 0);

1
include/linux/ide.h
View File

@ -50,6 +50,7 @@ struct ide_request {
struct scsi_request sreq;
u8 sense[SCSI_SENSE_BUFFERSIZE];
u8 type;
void *special;
};
static inline struct ide_request *ide_req(struct request *rq)