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path: root/drivers/ata/libata-eh.c
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Diffstat (limited to 'drivers/ata/libata-eh.c')
-rw-r--r--drivers/ata/libata-eh.c99
1 files changed, 35 insertions, 64 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index a5830329eda..f7cae640015 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1079,16 +1079,9 @@ void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
spin_lock_irqsave(ap->lock, flags);
- /* Reset is represented by combination of actions and EHI
- * flags. Suck in all related bits before clearing eh_info to
- * avoid losing requested action.
- */
- if (action & ATA_EH_RESET_MASK) {
- ehc->i.action |= ehi->action & ATA_EH_RESET_MASK;
+ /* suck in and clear reset modifier */
+ if (action & ATA_EH_RESET) {
ehc->i.flags |= ehi->flags & ATA_EHI_RESET_MODIFIER_MASK;
-
- /* make sure all reset actions are cleared & clear EHI flags */
- action |= ATA_EH_RESET_MASK;
ehi->flags &= ~ATA_EHI_RESET_MODIFIER_MASK;
}
@@ -1117,11 +1110,9 @@ void ata_eh_done(struct ata_link *link, struct ata_device *dev,
{
struct ata_eh_context *ehc = &link->eh_context;
- /* if reset is complete, clear all reset actions & reset modifier */
- if (action & ATA_EH_RESET_MASK) {
- action |= ATA_EH_RESET_MASK;
+ /* if reset is complete, clear reset modifier */
+ if (action & ATA_EH_RESET)
ehc->i.flags &= ~ATA_EHI_RESET_MODIFIER_MASK;
- }
ata_eh_clear_action(link, dev, &ehc->i, action);
}
@@ -1329,20 +1320,20 @@ static void ata_eh_analyze_serror(struct ata_link *link)
if (serror & SERR_PERSISTENT) {
err_mask |= AC_ERR_ATA_BUS;
- action |= ATA_EH_HARDRESET;
+ action |= ATA_EH_RESET;
}
if (serror &
(SERR_DATA_RECOVERED | SERR_COMM_RECOVERED | SERR_DATA)) {
err_mask |= AC_ERR_ATA_BUS;
- action |= ATA_EH_SOFTRESET;
+ action |= ATA_EH_RESET;
}
if (serror & SERR_PROTOCOL) {
err_mask |= AC_ERR_HSM;
- action |= ATA_EH_SOFTRESET;
+ action |= ATA_EH_RESET;
}
if (serror & SERR_INTERNAL) {
err_mask |= AC_ERR_SYSTEM;
- action |= ATA_EH_HARDRESET;
+ action |= ATA_EH_RESET;
}
/* Determine whether a hotplug event has occurred. Both
@@ -1448,7 +1439,7 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
if ((stat & (ATA_BUSY | ATA_DRQ | ATA_DRDY)) != ATA_DRDY) {
qc->err_mask |= AC_ERR_HSM;
- return ATA_EH_SOFTRESET;
+ return ATA_EH_RESET;
}
if (stat & (ATA_ERR | ATA_DF))
@@ -1484,7 +1475,7 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
}
if (qc->err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT | AC_ERR_ATA_BUS))
- action |= ATA_EH_SOFTRESET;
+ action |= ATA_EH_RESET;
return action;
}
@@ -1685,7 +1676,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev,
if (verdict & ATA_EH_SPDN_SPEED_DOWN) {
/* speed down SATA link speed if possible */
if (sata_down_spd_limit(link) == 0) {
- action |= ATA_EH_HARDRESET;
+ action |= ATA_EH_RESET;
goto done;
}
@@ -1705,7 +1696,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev,
dev->spdn_cnt++;
if (ata_down_xfermask_limit(dev, sel) == 0) {
- action |= ATA_EH_SOFTRESET;
+ action |= ATA_EH_RESET;
goto done;
}
}
@@ -1719,7 +1710,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev,
(dev->xfer_shift != ATA_SHIFT_PIO)) {
if (ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO) == 0) {
dev->spdn_cnt = 0;
- action |= ATA_EH_SOFTRESET;
+ action |= ATA_EH_RESET;
goto done;
}
}
@@ -1764,9 +1755,9 @@ static void ata_eh_link_autopsy(struct ata_link *link)
ehc->i.serror |= serror;
ata_eh_analyze_serror(link);
} else if (rc != -EOPNOTSUPP) {
- /* SError read failed, force hardreset and probing */
+ /* SError read failed, force reset and probing */
ata_ehi_schedule_probe(&ehc->i);
- ehc->i.action |= ATA_EH_HARDRESET;
+ ehc->i.action |= ATA_EH_RESET;
ehc->i.err_mask |= AC_ERR_OTHER;
}
@@ -1814,7 +1805,7 @@ static void ata_eh_link_autopsy(struct ata_link *link)
/* enforce default EH actions */
if (ap->pflags & ATA_PFLAG_FROZEN ||
all_err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT))
- ehc->i.action |= ATA_EH_SOFTRESET;
+ ehc->i.action |= ATA_EH_RESET;
else if (((eflags & ATA_EFLAG_IS_IO) && all_err_mask) ||
(!(eflags & ATA_EFLAG_IS_IO) && (all_err_mask & ~AC_ERR_DEV)))
ehc->i.action |= ATA_EH_REVALIDATE;
@@ -2118,7 +2109,6 @@ int ata_eh_reset(struct ata_link *link, int classify,
int try = 0;
struct ata_device *dev;
unsigned long deadline, now;
- unsigned int tmp_action;
ata_reset_fn_t reset;
unsigned long flags;
u32 sstatus;
@@ -2129,7 +2119,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
ap->pflags |= ATA_PFLAG_RESETTING;
spin_unlock_irqrestore(ap->lock, flags);
- ata_eh_about_to_do(link, NULL, ehc->i.action & ATA_EH_RESET_MASK);
+ ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
ata_link_for_each_dev(dev, link) {
/* If we issue an SRST then an ATA drive (not ATAPI)
@@ -2159,17 +2149,15 @@ int ata_eh_reset(struct ata_link *link, int classify,
goto done;
}
- /* Determine which reset to use and record in ehc->i.action.
- * prereset() may examine and modify it.
- */
- if (softreset && (!hardreset || (!(lflags & ATA_LFLAG_NO_SRST) &&
- !sata_set_spd_needed(link) &&
- !(ehc->i.action & ATA_EH_HARDRESET))))
- tmp_action = ATA_EH_SOFTRESET;
- else
- tmp_action = ATA_EH_HARDRESET;
-
- ehc->i.action = (ehc->i.action & ~ATA_EH_RESET_MASK) | tmp_action;
+ /* prefer hardreset */
+ ehc->i.action &= ~ATA_EH_RESET;
+ if (hardreset) {
+ reset = hardreset;
+ ehc->i.action = ATA_EH_HARDRESET;
+ } else {
+ reset = softreset;
+ ehc->i.action = ATA_EH_SOFTRESET;
+ }
if (prereset) {
rc = prereset(link, jiffies + ATA_EH_PRERESET_TIMEOUT);
@@ -2177,7 +2165,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
if (rc == -ENOENT) {
ata_link_printk(link, KERN_DEBUG,
"port disabled. ignoring.\n");
- ehc->i.action &= ~ATA_EH_RESET_MASK;
+ ehc->i.action &= ~ATA_EH_RESET;
ata_link_for_each_dev(dev, link)
classes[dev->devno] = ATA_DEV_NONE;
@@ -2190,12 +2178,8 @@ int ata_eh_reset(struct ata_link *link, int classify,
}
}
- /* prereset() might have modified ehc->i.action */
- if (ehc->i.action & ATA_EH_HARDRESET)
- reset = hardreset;
- else if (ehc->i.action & ATA_EH_SOFTRESET)
- reset = softreset;
- else {
+ /* prereset() might have cleared ATA_EH_RESET */
+ if (!(ehc->i.action & ATA_EH_RESET)) {
/* prereset told us not to reset, bang classes and return */
ata_link_for_each_dev(dev, link)
classes[dev->devno] = ATA_DEV_NONE;
@@ -2203,14 +2187,6 @@ int ata_eh_reset(struct ata_link *link, int classify,
goto out;
}
- /* did prereset() screw up? if so, fix up to avoid oopsing */
- if (!reset) {
- if (softreset)
- reset = softreset;
- else
- reset = hardreset;
- }
-
retry:
deadline = jiffies + ata_eh_reset_timeouts[try++];
@@ -2240,7 +2216,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
goto fail;
}
- ata_eh_about_to_do(link, NULL, ATA_EH_RESET_MASK);
+ ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
rc = ata_do_reset(link, reset, classes, deadline);
}
@@ -2290,7 +2266,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
postreset(link, classes);
/* reset successful, schedule revalidation */
- ata_eh_done(link, NULL, ehc->i.action & ATA_EH_RESET_MASK);
+ ata_eh_done(link, NULL, ATA_EH_RESET);
ehc->i.action |= ATA_EH_REVALIDATE;
rc = 0;
@@ -2548,7 +2524,7 @@ static int ata_eh_schedule_probe(struct ata_device *dev)
ata_eh_detach_dev(dev);
ata_dev_init(dev);
ehc->did_probe_mask |= (1 << dev->devno);
- ehc->i.action |= ATA_EH_SOFTRESET;
+ ehc->i.action |= ATA_EH_RESET;
ehc->saved_xfer_mode[dev->devno] = 0;
ehc->saved_ncq_enabled &= ~(1 << dev->devno);
@@ -2592,12 +2568,7 @@ static int ata_eh_handle_dev_fail(struct ata_device *dev, int err)
return 1;
} else {
- /* soft didn't work? be haaaaard */
- if (ehc->i.flags & ATA_EHI_DID_RESET)
- ehc->i.action |= ATA_EH_HARDRESET;
- else
- ehc->i.action |= ATA_EH_SOFTRESET;
-
+ ehc->i.action |= ATA_EH_RESET;
return 0;
}
}
@@ -2690,7 +2661,7 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
ehc->i.action = 0;
/* do we need to reset? */
- if (ehc->i.action & ATA_EH_RESET_MASK)
+ if (ehc->i.action & ATA_EH_RESET)
reset = 1;
ata_link_for_each_dev(dev, link)
@@ -2708,7 +2679,7 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
ata_port_for_each_link(link, ap) {
struct ata_eh_context *ehc = &link->eh_context;
- if (!(ehc->i.action & ATA_EH_RESET_MASK))
+ if (!(ehc->i.action & ATA_EH_RESET))
continue;
rc = ata_eh_reset(link, ata_link_nr_vacant(link),