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

From: Sergey Shtylyov
Date: Mon Feb 14 2022 - 15:46:54 EST

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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@xxxxxx>

---
This patch is against the 'for-next' branch of Damien Le Moal's 'libata.git'
repo plus just posted 'drivers/ata/libata-scsi.c' patch.

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 | 8 ++++----
include/linux/libata.h | 10 ++++++++--
21 files changed, 89 insertions(+), 83 deletions(-)

Index: libata/drivers/ata/acard-ahci.c
===================================================================
--- libata.orig/drivers/ata/acard-ahci.c
+++ libata/drivers/ata/acard-ahci.c
@@ -265,7 +265,7 @@ static bool acard_ahci_qc_fill_rtf(struc
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);

Index: libata/drivers/ata/ahci.c
===================================================================
--- libata.orig/drivers/ata/ahci.c
+++ libata/drivers/ata/ahci.c
@@ -739,7 +739,7 @@ static int ahci_p5wdh_hardreset(struct a

/* 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),
@@ -808,7 +808,7 @@ static int ahci_avn_hardreset(struct ata

/* 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,
Index: libata/drivers/ata/ahci_qoriq.c
===================================================================
--- libata.orig/drivers/ata/ahci_qoriq.c
+++ libata/drivers/ata/ahci_qoriq.c
@@ -123,7 +123,7 @@ static int ahci_qoriq_hardreset(struct a

/* 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,
Index: libata/drivers/ata/ahci_xgene.c
===================================================================
--- libata.orig/drivers/ata/ahci_xgene.c
+++ libata/drivers/ata/ahci_xgene.c
@@ -365,7 +365,7 @@ static int xgene_ahci_do_hardreset(struc
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);
Index: libata/drivers/ata/libahci.c
===================================================================
--- libata.orig/drivers/ata/libahci.c
+++ libata/drivers/ata/libahci.c
@@ -1561,7 +1561,7 @@ int ahci_do_hardreset(struct ata_link *l

/* 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,
@@ -2033,7 +2033,7 @@ static bool ahci_qc_fill_rtf(struct ata_
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);

Index: libata/drivers/ata/libata-acpi.c
===================================================================
--- libata.orig/drivers/ata/libata-acpi.c
+++ libata/drivers/ata/libata-acpi.c
@@ -546,13 +546,13 @@ static void ata_acpi_gtf_to_tf(struct at

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,
@@ -679,7 +679,7 @@ static int ata_acpi_run_tf(struct ata_de
"(%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;

@@ -689,7 +689,7 @@ static int ata_acpi_run_tf(struct ata_de
"(%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;
}
Index: libata/drivers/ata/libata-core.c
===================================================================
--- libata.orig/drivers/ata/libata-core.c
+++ libata/drivers/ata/libata-core.c
@@ -1171,7 +1171,7 @@ static int ata_read_native_max_address(s
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;
}
@@ -1235,7 +1235,7 @@ static int ata_set_max_sectors(struct at
"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;
}
@@ -1584,7 +1584,7 @@ unsigned ata_exec_internal_sg(struct ata

/* 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)
@@ -1593,7 +1593,7 @@ unsigned ata_exec_internal_sg(struct ata
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 */
@@ -1813,7 +1813,7 @@ retry:
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
@@ -4375,7 +4375,7 @@ static unsigned int ata_dev_init_params(
/* 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;

return err_mask;
Index: libata/drivers/ata/libata-eh.c
===================================================================
--- libata.orig/drivers/ata/libata-eh.c
+++ libata/drivers/ata/libata-eh.c
@@ -1386,7 +1386,7 @@ unsigned int atapi_eh_tur(struct ata_dev

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;
}

@@ -1429,12 +1429,12 @@ static void ata_eh_request_sense(struct

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);
}
}

@@ -1557,7 +1557,7 @@ static unsigned int ata_eh_analyze_tf(st
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;
@@ -1594,7 +1594,7 @@ static unsigned int ata_eh_analyze_tf(st
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
@@ -2360,7 +2360,7 @@ static void ata_eh_link_report(struct at
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,
@@ -2368,28 +2368,28 @@ static void ata_eh_link_report(struct at
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
}
}
Index: libata/drivers/ata/libata-sata.c
===================================================================
--- libata.orig/drivers/ata/libata-sata.c
+++ libata/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];
@@ -1406,8 +1406,8 @@ static int ata_eh_read_log_10h(struct at

*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];
@@ -1482,7 +1482,7 @@ void ata_eh_analyze_ncq_error(struct ata
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;
Index: libata/drivers/ata/libata-scsi.c
===================================================================
--- libata.orig/drivers/ata/libata-scsi.c
+++ libata/drivers/ata/libata-scsi.c
@@ -680,7 +680,7 @@ static void ata_qc_set_pc_nbytes(struct
*/
static void ata_dump_status(struct ata_port *ap, struct ata_taskfile *tf)
{
- u8 stat = tf->command, err = tf->feature;
+ u8 stat = tf->status, err = tf->error;

if (stat & ATA_BUSY) {
ata_port_warn(ap, "status=0x%02x {Busy} ", stat);
@@ -871,8 +871,8 @@ static void ata_gen_passthru_sense(struc
* 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 {
@@ -901,13 +901,13 @@ static void ata_gen_passthru_sense(struc
* 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
@@ -922,8 +922,8 @@ static void ata_gen_passthru_sense(struc
}
} 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;
@@ -972,14 +972,14 @@ static void ata_gen_ata_sense(struct ata
* 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;
}
@@ -2473,7 +2473,7 @@ static void atapi_request_sense(struct a

/* 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);

Index: libata/drivers/ata/libata-sff.c
===================================================================
--- libata.orig/drivers/ata/libata-sff.c
+++ libata/drivers/ata/libata-sff.c
@@ -449,8 +449,8 @@ void ata_sff_tf_read(struct ata_port *ap
{
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);
@@ -1824,7 +1824,7 @@ unsigned int ata_sff_dev_classify(struct
memset(&tf, 0, sizeof(tf));

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

Index: libata/drivers/ata/pata_ep93xx.c
===================================================================
--- libata.orig/drivers/ata/pata_ep93xx.c
+++ libata/drivers/ata/pata_ep93xx.c
@@ -416,8 +416,8 @@ static void ep93xx_pata_tf_read(struct a
{
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);
Index: libata/drivers/ata/pata_ns87415.c
===================================================================
--- libata.orig/drivers/ata/pata_ns87415.c
+++ libata/drivers/ata/pata_ns87415.c
@@ -264,8 +264,8 @@ void ns87560_tf_read(struct ata_port *ap
{
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);
Index: libata/drivers/ata/pata_octeon_cf.c
===================================================================
--- libata.orig/drivers/ata/pata_octeon_cf.c
+++ libata/drivers/ata/pata_octeon_cf.c
@@ -382,7 +382,7 @@ static void octeon_cf_tf_read16(struct a
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;
@@ -394,7 +394,7 @@ static void octeon_cf_tf_read16(struct a

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)) {
Index: libata/drivers/ata/pata_samsung_cf.c
===================================================================
--- libata.orig/drivers/ata/pata_samsung_cf.c
+++ libata/drivers/ata/pata_samsung_cf.c
@@ -213,7 +213,7 @@ static void pata_s3c_tf_read(struct ata_
{
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);
Index: libata/drivers/ata/sata_highbank.c
===================================================================
--- libata.orig/drivers/ata/sata_highbank.c
+++ libata/drivers/ata/sata_highbank.c
@@ -400,7 +400,7 @@ static int ahci_highbank_hardreset(struc

/* 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 {
Index: libata/drivers/ata/sata_inic162x.c
===================================================================
--- libata.orig/drivers/ata/sata_inic162x.c
+++ libata/drivers/ata/sata_inic162x.c
@@ -557,13 +557,13 @@ static void inic_tf_read(struct ata_port
{
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)
@@ -580,11 +580,11 @@ static bool inic_qc_fill_rtf(struct ata_
*/
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;
}

Index: libata/drivers/ata/sata_rcar.c
===================================================================
--- libata.orig/drivers/ata/sata_rcar.c
+++ libata/drivers/ata/sata_rcar.c
@@ -394,8 +394,8 @@ static void sata_rcar_tf_read(struct ata
{
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);
Index: libata/drivers/ata/sata_svw.c
===================================================================
--- libata.orig/drivers/ata/sata_svw.c
+++ libata/drivers/ata/sata_svw.c
@@ -194,24 +194,24 @@ static void k2_sata_tf_load(struct ata_p
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;
Index: libata/drivers/ata/sata_vsc.c
===================================================================
--- libata.orig/drivers/ata/sata_vsc.c
+++ libata/drivers/ata/sata_vsc.c
@@ -183,17 +183,17 @@ static void vsc_sata_tf_load(struct ata_
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;
Index: libata/include/linux/libata.h
===================================================================
--- libata.orig/include/linux/libata.h
+++ libata/include/linux/libata.h
@@ -518,7 +518,10 @@ struct ata_taskfile {
u8 hob_lbam;
u8 hob_lbah;

- u8 feature;
+ union {
+ u8 error;
+ u8 feature;
+ };
u8 nsect;
u8 lbal;
u8 lbam;
@@ -526,7 +529,10 @@ struct ata_taskfile {

u8 device;

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

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

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