[PATCH 5.15 148/731] ata: add/use ata_taskfile::{error|status} fields

Greg Kroah-Hartman
2022-12-28T14:52:31Z

From: Sergey Shtylyov <s.shtylyov@omp.ru>

[ Upstream commit efcef265fd83d9a68a68926abecb3e1dd3e260a8 ]

Add the explicit error and status register fields to 'struct ata_taskfile'
using the anonymous *union*s ('struct ide_taskfile' had that for ages!) and
update the libata taskfile code accordingly. There should be no object code
changes resulting from that...

Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Stable-dep-of: 7390896b3484 ("ata: libata: fix NCQ autosense logic")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/ata/acard-ahci.c | 2 +-
drivers/ata/ahci.c | 4 ++--
drivers/ata/ahci_qoriq.c | 2 +-
drivers/ata/ahci_xgene.c | 2 +-
drivers/ata/libahci.c | 4 ++--
drivers/ata/libata-acpi.c | 8 +++----
drivers/ata/libata-core.c | 12 +++++-----
drivers/ata/libata-eh.c | 42 +++++++++++++++++------------------
drivers/ata/libata-sata.c | 10 ++++-----
drivers/ata/libata-scsi.c | 22 +++++++++---------
drivers/ata/libata-sff.c | 6 ++---
drivers/ata/pata_ep93xx.c | 4 ++--
drivers/ata/pata_ns87415.c | 4 ++--
drivers/ata/pata_octeon_cf.c | 4 ++--
drivers/ata/pata_samsung_cf.c | 2 +-
drivers/ata/sata_highbank.c | 2 +-
drivers/ata/sata_inic162x.c | 10 ++++-----
drivers/ata/sata_rcar.c | 4 ++--
drivers/ata/sata_svw.c | 10 ++++-----
drivers/ata/sata_vsc.c | 10 ++++-----
include/linux/libata.h | 10 +++++++--
21 files changed, 90 insertions(+), 84 deletions(-)

diff --git a/drivers/ata/acard-ahci.c b/drivers/ata/acard-ahci.c
index 2a04e8abd397..26e0eb537b4f 100644
--- a/drivers/ata/acard-ahci.c
+++ b/drivers/ata/acard-ahci.c
@@ -267,7 +267,7 @@ static bool acard_ahci_qc_fill_rtf(struct ata_queued_cmd *qc)
if (qc->tf.protocol == ATA_PROT_PIO && qc->dma_dir == DMA_FROM_DEVICE &&
!(qc->flags & ATA_QCFLAG_FAILED)) {
ata_tf_from_fis(rx_fis + RX_FIS_PIO_SETUP, &qc->result_tf);
- qc->result_tf.command = (rx_fis + RX_FIS_PIO_SETUP)[15];
+ qc->result_tf.status = (rx_fis + RX_FIS_PIO_SETUP)[15];
} else
ata_tf_from_fis(rx_fis + RX_FIS_D2H_REG, &qc->result_tf);

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 812731e80f8e..c1bf7117a9ff 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -735,7 +735,7 @@ static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,

/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(link->device, &tf);
- tf.command = ATA_BUSY;
+ tf.status = ATA_BUSY;
ata_tf_to_fis(&tf, 0, 0, d2h_fis);

rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
@@ -806,7 +806,7 @@ static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,

/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(link->device, &tf);
- tf.command = ATA_BUSY;
+ tf.status = ATA_BUSY;
ata_tf_to_fis(&tf, 0, 0, d2h_fis);

rc = sata_link_hardreset(link, timing, deadline, &online,
diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c
index 5b46fc9aeb4a..e5ac3d1c214c 100644
--- a/drivers/ata/ahci_qoriq.c
+++ b/drivers/ata/ahci_qoriq.c
@@ -125,7 +125,7 @@ static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class,

/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(link->device, &tf);
- tf.command = ATA_BUSY;
+ tf.status = ATA_BUSY;
ata_tf_to_fis(&tf, 0, 0, d2h_fis);

rc = sata_link_hardreset(link, timing, deadline, &online,
diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c
index dffc432b9d54..292099410cf6 100644
--- a/drivers/ata/ahci_xgene.c
+++ b/drivers/ata/ahci_xgene.c
@@ -365,7 +365,7 @@ static int xgene_ahci_do_hardreset(struct ata_link *link,
do {
/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(link->device, &tf);
- tf.command = ATA_BUSY;
+ tf.status = ATA_BUSY;
ata_tf_to_fis(&tf, 0, 0, d2h_fis);
rc = sata_link_hardreset(link, timing, deadline, online,
ahci_check_ready);
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 395772fa3943..192115a45dd7 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1552,7 +1552,7 @@ int ahci_do_hardreset(struct ata_link *link, unsigned int *class,

/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(link->device, &tf);
- tf.command = ATA_BUSY;
+ tf.status = ATA_BUSY;
ata_tf_to_fis(&tf, 0, 0, d2h_fis);

rc = sata_link_hardreset(link, timing, deadline, online,
@@ -2038,7 +2038,7 @@ static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc)
if (qc->tf.protocol == ATA_PROT_PIO && qc->dma_dir == DMA_FROM_DEVICE &&
!(qc->flags & ATA_QCFLAG_FAILED)) {
ata_tf_from_fis(rx_fis + RX_FIS_PIO_SETUP, &qc->result_tf);
- qc->result_tf.command = (rx_fis + RX_FIS_PIO_SETUP)[15];
+ qc->result_tf.status = (rx_fis + RX_FIS_PIO_SETUP)[15];
} else
ata_tf_from_fis(rx_fis + RX_FIS_D2H_REG, &qc->result_tf);

diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 7007377880ce..d15f3e908ea4 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -554,13 +554,13 @@ static void ata_acpi_gtf_to_tf(struct ata_device *dev,

tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf->protocol = ATA_PROT_NODATA;
- tf->feature = gtf->tf[0]; /* 0x1f1 */
+ tf->error = gtf->tf[0]; /* 0x1f1 */
tf->nsect = gtf->tf[1]; /* 0x1f2 */
tf->lbal = gtf->tf[2]; /* 0x1f3 */
tf->lbam = gtf->tf[3]; /* 0x1f4 */
tf->lbah = gtf->tf[4]; /* 0x1f5 */
tf->device = gtf->tf[5]; /* 0x1f6 */
- tf->command = gtf->tf[6]; /* 0x1f7 */
+ tf->status = gtf->tf[6]; /* 0x1f7 */
}

static int ata_acpi_filter_tf(struct ata_device *dev,
@@ -689,7 +689,7 @@ static int ata_acpi_run_tf(struct ata_device *dev,
"(%s) rejected by device (Stat=0x%02x Err=0x%02x)",
tf.command, tf.feature, tf.nsect, tf.lbal,
tf.lbam, tf.lbah, tf.device, descr,
- rtf.command, rtf.feature);
+ rtf.status, rtf.error);
rc = 0;
break;

@@ -699,7 +699,7 @@ static int ata_acpi_run_tf(struct ata_device *dev,
"(%s) failed (Emask=0x%x Stat=0x%02x Err=0x%02x)",
tf.command, tf.feature, tf.nsect, tf.lbal,
tf.lbam, tf.lbah, tf.device, descr,
- err_mask, rtf.command, rtf.feature);
+ err_mask, rtf.status, rtf.error);
rc = -EIO;
break;
}
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 1c9ad3045606..c430cd3cfa17 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1185,7 +1185,7 @@ static int ata_read_native_max_address(struct ata_device *dev, u64 *max_sectors)
ata_dev_warn(dev,
"failed to read native max address (err_mask=0x%x)\n",
err_mask);
- if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED))
+ if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED))
return -EACCES;
return -EIO;
}
@@ -1249,7 +1249,7 @@ static int ata_set_max_sectors(struct ata_device *dev, u64 new_sectors)
"failed to set max address (err_mask=0x%x)\n",
err_mask);
if (err_mask == AC_ERR_DEV &&
- (tf.feature & (ATA_ABORTED | ATA_IDNF)))
+ (tf.error & (ATA_ABORTED | ATA_IDNF)))
return -EACCES;
return -EIO;
}
@@ -1616,7 +1616,7 @@ unsigned ata_exec_internal_sg(struct ata_device *dev,

/* perform minimal error analysis */
if (qc->flags & ATA_QCFLAG_FAILED) {
- if (qc->result_tf.command & (ATA_ERR | ATA_DF))
+ if (qc->result_tf.status & (ATA_ERR | ATA_DF))
qc->err_mask |= AC_ERR_DEV;

if (!qc->err_mask)
@@ -1625,7 +1625,7 @@ unsigned ata_exec_internal_sg(struct ata_device *dev,
if (qc->err_mask & ~AC_ERR_OTHER)
qc->err_mask &= ~AC_ERR_OTHER;
} else if (qc->tf.command == ATA_CMD_REQ_SENSE_DATA) {
- qc->result_tf.command |= ATA_SENSE;
+ qc->result_tf.status |= ATA_SENSE;
}

/* finish up */
@@ -1848,7 +1848,7 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
return 0;
}

- if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
+ if ((err_mask == AC_ERR_DEV) && (tf.error & ATA_ABORTED)) {
/* Device or controller might have reported
* the wrong device class. Give a shot at the
* other IDENTIFY if the current one is
@@ -4371,7 +4371,7 @@ static unsigned int ata_dev_init_params(struct ata_device *dev,
/* A clean abort indicates an original or just out of spec drive
and we should continue as we issue the setup based on the
drive reported working geometry */
- if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED))
+ if (err_mask == AC_ERR_DEV && (tf.error & ATA_ABORTED))
err_mask = 0;

DPRINTK("EXIT, err_mask=%x\n", err_mask);
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 7aea631edb27..8350abc17290 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1386,7 +1386,7 @@ unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key)

err_mask = ata_exec_internal(dev, &tf, cdb, DMA_NONE, NULL, 0, 0);
if (err_mask == AC_ERR_DEV)
- *r_sense_key = tf.feature >> 4;
+ *r_sense_key = tf.error >> 4;
return err_mask;
}

@@ -1431,12 +1431,12 @@ static void ata_eh_request_sense(struct ata_queued_cmd *qc,

err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
/* Ignore err_mask; ATA_ERR might be set */
- if (tf.command & ATA_SENSE) {
+ if (tf.status & ATA_SENSE) {
ata_scsi_set_sense(dev, cmd, tf.lbah, tf.lbam, tf.lbal);
qc->flags |= ATA_QCFLAG_SENSE_VALID;
} else {
ata_dev_warn(dev, "request sense failed stat %02x emask %x\n",
- tf.command, err_mask);
+ tf.status, err_mask);
}
}

@@ -1561,7 +1561,7 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
const struct ata_taskfile *tf)
{
unsigned int tmp, action = 0;
- u8 stat = tf->command, err = tf->feature;
+ u8 stat = tf->status, err = tf->error;

if ((stat & (ATA_BUSY | ATA_DRQ | ATA_DRDY)) != ATA_DRDY) {
qc->err_mask |= AC_ERR_HSM;
@@ -1598,7 +1598,7 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
if (!(qc->ap->pflags & ATA_PFLAG_FROZEN)) {
tmp = atapi_eh_request_sense(qc->dev,
qc->scsicmd->sense_buffer,
- qc->result_tf.feature >> 4);
+ qc->result_tf.error >> 4);
if (!tmp)
qc->flags |= ATA_QCFLAG_SENSE_VALID;
else
@@ -2372,7 +2372,7 @@ static void ata_eh_link_report(struct ata_link *link)
cmd->hob_feature, cmd->hob_nsect,
cmd->hob_lbal, cmd->hob_lbam, cmd->hob_lbah,
cmd->device, qc->tag, data_buf, cdb_buf,
- res->command, res->feature, res->nsect,
+ res->status, res->error, res->nsect,
res->lbal, res->lbam, res->lbah,
res->hob_feature, res->hob_nsect,
res->hob_lbal, res->hob_lbam, res->hob_lbah,
@@ -2380,28 +2380,28 @@ static void ata_eh_link_report(struct ata_link *link)
qc->err_mask & AC_ERR_NCQ ? " <F>" : "");

#ifdef CONFIG_ATA_VERBOSE_ERROR
- if (res->command & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ |
- ATA_SENSE | ATA_ERR)) {
- if (res->command & ATA_BUSY)
+ if (res->status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ |
+ ATA_SENSE | ATA_ERR)) {
+ if (res->status & ATA_BUSY)
ata_dev_err(qc->dev, "status: { Busy }\n");
else
ata_dev_err(qc->dev, "status: { %s%s%s%s%s}\n",
- res->command & ATA_DRDY ? "DRDY " : "",
- res->command & ATA_DF ? "DF " : "",
- res->command & ATA_DRQ ? "DRQ " : "",
- res->command & ATA_SENSE ? "SENSE " : "",
- res->command & ATA_ERR ? "ERR " : "");
+ res->status & ATA_DRDY ? "DRDY " : "",
+ res->status & ATA_DF ? "DF " : "",
+ res->status & ATA_DRQ ? "DRQ " : "",
+ res->status & ATA_SENSE ? "SENSE " : "",
+ res->status & ATA_ERR ? "ERR " : "");
}

if (cmd->command != ATA_CMD_PACKET &&
- (res->feature & (ATA_ICRC | ATA_UNC | ATA_AMNF |
- ATA_IDNF | ATA_ABORTED)))
+ (res->error & (ATA_ICRC | ATA_UNC | ATA_AMNF | ATA_IDNF |
+ ATA_ABORTED)))
ata_dev_err(qc->dev, "error: { %s%s%s%s%s}\n",
- res->feature & ATA_ICRC ? "ICRC " : "",
- res->feature & ATA_UNC ? "UNC " : "",
- res->feature & ATA_AMNF ? "AMNF " : "",
- res->feature & ATA_IDNF ? "IDNF " : "",
- res->feature & ATA_ABORTED ? "ABRT " : "");
+ res->error & ATA_ICRC ? "ICRC " : "",
+ res->error & ATA_UNC ? "UNC " : "",
+ res->error & ATA_AMNF ? "AMNF " : "",
+ res->error & ATA_IDNF ? "IDNF " : "",
+ res->error & ATA_ABORTED ? "ABRT " : "");
#endif
}
}
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 8f3ff830ab0c..1e59e5b6b047 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -191,8 +191,8 @@ EXPORT_SYMBOL_GPL(ata_tf_to_fis);

void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf)
{
- tf->command = fis[2]; /* status */
- tf->feature = fis[3]; /* error */
+ tf->status = fis[2];
+ tf->error = fis[3];

tf->lbal = fis[4];
tf->lbam = fis[5];
@@ -1402,8 +1402,8 @@ static int ata_eh_read_log_10h(struct ata_device *dev,

*tag = buf[0] & 0x1f;

- tf->command = buf[2];
- tf->feature = buf[3];
+ tf->status = buf[2];
+ tf->error = buf[3];
tf->lbal = buf[4];
tf->lbam = buf[5];
tf->lbah = buf[6];
@@ -1478,7 +1478,7 @@ void ata_eh_analyze_ncq_error(struct ata_link *link)
qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ;
if (dev->class == ATA_DEV_ZAC &&
- ((qc->result_tf.command & ATA_SENSE) || qc->result_tf.auxiliary)) {
+ ((qc->result_tf.status & ATA_SENSE) || qc->result_tf.auxiliary)) {
char sense_key, asc, ascq;

sense_key = (qc->result_tf.auxiliary >> 16) & 0xff;
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 061d2f8feeb5..4d8129640d60 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -671,7 +671,7 @@ static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc)
*/
static void ata_dump_status(unsigned id, struct ata_taskfile *tf)
{
- u8 stat = tf->command, err = tf->feature;
+ u8 stat = tf->status, err = tf->error;

pr_warn("ata%u: status=0x%02x { ", id, stat);
if (stat & ATA_BUSY) {
@@ -867,8 +867,8 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
* onto sense key, asc & ascq.
*/
if (qc->err_mask ||
- tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
- ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
+ tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
+ ata_to_sense_error(qc->ap->print_id, tf->status, tf->error,
&sense_key, &asc, &ascq, verbose);
ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq);
} else {
@@ -897,13 +897,13 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
* Copy registers into sense buffer.
*/
desc[2] = 0x00;
- desc[3] = tf->feature; /* == error reg */
+ desc[3] = tf->error;
desc[5] = tf->nsect;
desc[7] = tf->lbal;
desc[9] = tf->lbam;
desc[11] = tf->lbah;
desc[12] = tf->device;
- desc[13] = tf->command; /* == status reg */
+ desc[13] = tf->status;

/*
* Fill in Extend bit, and the high order bytes
@@ -918,8 +918,8 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
}
} else {
/* Fixed sense format */
- desc[0] = tf->feature;
- desc[1] = tf->command; /* status */
+ desc[0] = tf->error;
+ desc[1] = tf->status;
desc[2] = tf->device;
desc[3] = tf->nsect;
desc[7] = 0;
@@ -968,14 +968,14 @@ static void ata_gen_ata_sense(struct ata_queued_cmd *qc)
* onto sense key, asc & ascq.
*/
if (qc->err_mask ||
- tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
- ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature,
+ tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
+ ata_to_sense_error(qc->ap->print_id, tf->status, tf->error,
&sense_key, &asc, &ascq, verbose);
ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq);
} else {
/* Could not decode error */
ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n",
- tf->command, qc->err_mask);
+ tf->status, qc->err_mask);
ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0);
return;
}
@@ -2490,7 +2490,7 @@ static void atapi_request_sense(struct ata_queued_cmd *qc)

/* fill these in, for the case where they are -not- overwritten */
cmd->sense_buffer[0] = 0x70;
- cmd->sense_buffer[2] = qc->tf.feature >> 4;
+ cmd->sense_buffer[2] = qc->tf.error >> 4;

ata_qc_reinit(qc);

diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index b71ea4a680b0..8409e53b7b7a 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -457,8 +457,8 @@ void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;

- tf->command = ata_sff_check_status(ap);
- tf->feature = ioread8(ioaddr->error_addr);
+ tf->status = ata_sff_check_status(ap);
+ tf->error = ioread8(ioaddr->error_addr);
tf->nsect = ioread8(ioaddr->nsect_addr);
tf->lbal = ioread8(ioaddr->lbal_addr);
tf->lbam = ioread8(ioaddr->lbam_addr);
@@ -1837,7 +1837,7 @@ unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
memset(&tf, 0, sizeof(tf));

ap->ops->sff_tf_read(ap, &tf);
- err = tf.feature;
+ err = tf.error;
if (r_err)
*r_err = err;

diff --git a/drivers/ata/pata_ep93xx.c b/drivers/ata/pata_ep93xx.c
index 46208ececbb6..3fc26026014e 100644
--- a/drivers/ata/pata_ep93xx.c
+++ b/drivers/ata/pata_ep93xx.c
@@ -416,8 +416,8 @@ static void ep93xx_pata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ep93xx_pata_data *drv_data = ap->host->private_data;

- tf->command = ep93xx_pata_check_status(ap);
- tf->feature = ep93xx_pata_read_reg(drv_data, IDECTRL_ADDR_FEATURE);
+ tf->status = ep93xx_pata_check_status(ap);
+ tf->error = ep93xx_pata_read_reg(drv_data, IDECTRL_ADDR_FEATURE);
tf->nsect = ep93xx_pata_read_reg(drv_data, IDECTRL_ADDR_NSECT);
tf->lbal = ep93xx_pata_read_reg(drv_data, IDECTRL_ADDR_LBAL);
tf->lbam = ep93xx_pata_read_reg(drv_data, IDECTRL_ADDR_LBAM);
diff --git a/drivers/ata/pata_ns87415.c b/drivers/ata/pata_ns87415.c
index f4949e704356..9dd6bffefb48 100644
--- a/drivers/ata/pata_ns87415.c
+++ b/drivers/ata/pata_ns87415.c
@@ -264,8 +264,8 @@ void ns87560_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;

- tf->command = ns87560_check_status(ap);
- tf->feature = ioread8(ioaddr->error_addr);
+ tf->status = ns87560_check_status(ap);
+ tf->error = ioread8(ioaddr->error_addr);
tf->nsect = ioread8(ioaddr->nsect_addr);
tf->lbal = ioread8(ioaddr->lbal_addr);
tf->lbam = ioread8(ioaddr->lbam_addr);
diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index 4cc8a1027888..6c9f2efcedc1 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -386,7 +386,7 @@ static void octeon_cf_tf_read16(struct ata_port *ap, struct ata_taskfile *tf)
void __iomem *base = ap->ioaddr.data_addr;

blob = __raw_readw(base + 0xc);
- tf->feature = blob >> 8;
+ tf->error = blob >> 8;

blob = __raw_readw(base + 2);
tf->nsect = blob & 0xff;
@@ -398,7 +398,7 @@ static void octeon_cf_tf_read16(struct ata_port *ap, struct ata_taskfile *tf)

blob = __raw_readw(base + 6);
tf->device = blob & 0xff;
- tf->command = blob >> 8;
+ tf->status = blob >> 8;

if (tf->flags & ATA_TFLAG_LBA48) {
if (likely(ap->ioaddr.ctl_addr)) {
diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c
index 3da0e8e30286..149d771c61d6 100644
--- a/drivers/ata/pata_samsung_cf.c
+++ b/drivers/ata/pata_samsung_cf.c
@@ -213,7 +213,7 @@ static void pata_s3c_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;

- tf->feature = ata_inb(ap->host, ioaddr->error_addr);
+ tf->error = ata_inb(ap->host, ioaddr->error_addr);
tf->nsect = ata_inb(ap->host, ioaddr->nsect_addr);
tf->lbal = ata_inb(ap->host, ioaddr->lbal_addr);
tf->lbam = ata_inb(ap->host, ioaddr->lbam_addr);
diff --git a/drivers/ata/sata_highbank.c b/drivers/ata/sata_highbank.c
index 8440203e835e..f9bb3be4b939 100644
--- a/drivers/ata/sata_highbank.c
+++ b/drivers/ata/sata_highbank.c
@@ -400,7 +400,7 @@ static int ahci_highbank_hardreset(struct ata_link *link, unsigned int *class,

/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(link->device, &tf);
- tf.command = ATA_BUSY;
+ tf.status = ATA_BUSY;
ata_tf_to_fis(&tf, 0, 0, d2h_fis);

do {
diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index e517bd8822a5..659f1a903298 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -559,13 +559,13 @@ static void inic_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
void __iomem *port_base = inic_port_base(ap);

- tf->feature = readb(port_base + PORT_TF_FEATURE);
+ tf->error = readb(port_base + PORT_TF_FEATURE);
tf->nsect = readb(port_base + PORT_TF_NSECT);
tf->lbal = readb(port_base + PORT_TF_LBAL);
tf->lbam = readb(port_base + PORT_TF_LBAM);
tf->lbah = readb(port_base + PORT_TF_LBAH);
tf->device = readb(port_base + PORT_TF_DEVICE);
- tf->command = readb(port_base + PORT_TF_COMMAND);
+ tf->status = readb(port_base + PORT_TF_COMMAND);
}

static bool inic_qc_fill_rtf(struct ata_queued_cmd *qc)
@@ -582,11 +582,11 @@ static bool inic_qc_fill_rtf(struct ata_queued_cmd *qc)
*/
inic_tf_read(qc->ap, &tf);

- if (!(tf.command & ATA_ERR))
+ if (!(tf.status & ATA_ERR))
return false;

- rtf->command = tf.command;
- rtf->feature = tf.feature;
+ rtf->status = tf.status;
+ rtf->error = tf.error;
return true;
}

diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 44b0ed8f6bb8..9759e24f718f 100644
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -417,8 +417,8 @@ static void sata_rcar_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;

- tf->command = sata_rcar_check_status(ap);
- tf->feature = ioread32(ioaddr->error_addr);
+ tf->status = sata_rcar_check_status(ap);
+ tf->error = ioread32(ioaddr->error_addr);
tf->nsect = ioread32(ioaddr->nsect_addr);
tf->lbal = ioread32(ioaddr->lbal_addr);
tf->lbam = ioread32(ioaddr->lbam_addr);
diff --git a/drivers/ata/sata_svw.c b/drivers/ata/sata_svw.c
index f8552559db7f..2e3418a82b44 100644
--- a/drivers/ata/sata_svw.c
+++ b/drivers/ata/sata_svw.c
@@ -194,24 +194,24 @@ static void k2_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
static void k2_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
- u16 nsect, lbal, lbam, lbah, feature;
+ u16 nsect, lbal, lbam, lbah, error;

- tf->command = k2_stat_check_status(ap);
+ tf->status = k2_stat_check_status(ap);
tf->device = readw(ioaddr->device_addr);
- feature = readw(ioaddr->error_addr);
+ error = readw(ioaddr->error_addr);
nsect = readw(ioaddr->nsect_addr);
lbal = readw(ioaddr->lbal_addr);
lbam = readw(ioaddr->lbam_addr);
lbah = readw(ioaddr->lbah_addr);

- tf->feature = feature;
+ tf->error = error;
tf->nsect = nsect;
tf->lbal = lbal;
tf->lbam = lbam;
tf->lbah = lbah;

if (tf->flags & ATA_TFLAG_LBA48) {
- tf->hob_feature = feature >> 8;
+ tf->hob_feature = error >> 8;
tf->hob_nsect = nsect >> 8;
tf->hob_lbal = lbal >> 8;
tf->hob_lbam = lbam >> 8;
diff --git a/drivers/ata/sata_vsc.c b/drivers/ata/sata_vsc.c
index 8fa952cb9f7f..87e4ed66b306 100644
--- a/drivers/ata/sata_vsc.c
+++ b/drivers/ata/sata_vsc.c
@@ -183,24 +183,24 @@ static void vsc_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
static void vsc_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
- u16 nsect, lbal, lbam, lbah, feature;
+ u16 nsect, lbal, lbam, lbah, error;

- tf->command = ata_sff_check_status(ap);
+ tf->status = ata_sff_check_status(ap);
tf->device = readw(ioaddr->device_addr);
- feature = readw(ioaddr->error_addr);
+ error = readw(ioaddr->error_addr);
nsect = readw(ioaddr->nsect_addr);
lbal = readw(ioaddr->lbal_addr);
lbam = readw(ioaddr->lbam_addr);
lbah = readw(ioaddr->lbah_addr);

- tf->feature = feature;
+ tf->error = error;
tf->nsect = nsect;
tf->lbal = lbal;
tf->lbam = lbam;
tf->lbah = lbah;

if (tf->flags & ATA_TFLAG_LBA48) {
- tf->hob_feature = feature >> 8;
+ tf->hob_feature = error >> 8;
tf->hob_nsect = nsect >> 8;
tf->hob_lbal = lbal >> 8;
tf->hob_lbam = lbam >> 8;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index e9c79a72f5e6..d890c43cff14 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -565,7 +565,10 @@ struct ata_taskfile {
u8 hob_lbam;
u8 hob_lbah;

- u8 feature;
+ union {
+ u8 error;
+ u8 feature;
+ };
u8 nsect;
u8 lbal;
u8 lbam;
@@ -573,7 +576,10 @@ struct ata_taskfile {

u8 device;

- u8 command; /* IO operation */
+ union {
+ u8 status;
+ u8 command;
+ };

u32 auxiliary; /* auxiliary field */
/* from SATA 3.1 and */
--
2.35.1