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Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-core.c17
-rw-r--r--drivers/ata/libata-sff.c43
2 files changed, 47 insertions, 13 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index fd912ccb90f..5f771bb4433 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -74,7 +74,7 @@ const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 };
const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 };
const struct ata_port_operations ata_base_port_ops = {
- .prereset = ata_sff_prereset,
+ .prereset = ata_std_prereset,
.hardreset = sata_sff_hardreset,
.postreset = ata_sff_postreset,
.error_handler = ata_std_error_handler,
@@ -3416,7 +3416,7 @@ int sata_link_resume(struct ata_link *link, const unsigned long *params,
}
/**
- * ata_sff_prereset - prepare for reset
+ * ata_std_prereset - prepare for reset
* @link: ATA link to be reset
* @deadline: deadline jiffies for the operation
*
@@ -3432,7 +3432,7 @@ int sata_link_resume(struct ata_link *link, const unsigned long *params,
* RETURNS:
* 0 on success, -errno otherwise.
*/
-int ata_sff_prereset(struct ata_link *link, unsigned long deadline)
+int ata_std_prereset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct ata_eh_context *ehc = &link->eh_context;
@@ -3452,16 +3452,6 @@ int ata_sff_prereset(struct ata_link *link, unsigned long deadline)
"link for reset (errno=%d)\n", rc);
}
- /* wait for !BSY if we don't know that no device is attached */
- if (!ata_link_offline(link)) {
- rc = ata_sff_wait_ready(ap, deadline);
- if (rc && rc != -ENODEV) {
- ata_link_printk(link, KERN_WARNING, "device not ready "
- "(errno=%d), forcing hardreset\n", rc);
- ehc->i.action |= ATA_EH_HARDRESET;
- }
- }
-
return 0;
}
@@ -6104,6 +6094,7 @@ EXPORT_SYMBOL_GPL(ata_dev_disable);
EXPORT_SYMBOL_GPL(sata_set_spd);
EXPORT_SYMBOL_GPL(sata_link_debounce);
EXPORT_SYMBOL_GPL(sata_link_resume);
+EXPORT_SYMBOL_GPL(ata_std_prereset);
EXPORT_SYMBOL_GPL(sata_link_hardreset);
EXPORT_SYMBOL_GPL(ata_dev_classify);
EXPORT_SYMBOL_GPL(ata_dev_pair);
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index c1160161713..9234bc04795 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -47,6 +47,7 @@ const struct ata_port_operations ata_sff_port_ops = {
.freeze = ata_sff_freeze,
.thaw = ata_sff_thaw,
+ .prereset = ata_sff_prereset,
.softreset = ata_sff_softreset,
.error_handler = ata_sff_error_handler,
.post_internal_cmd = ata_sff_post_internal_cmd,
@@ -1607,6 +1608,48 @@ void ata_sff_thaw(struct ata_port *ap)
}
/**
+ * ata_sff_prereset - prepare SFF link for reset
+ * @link: SFF link to be reset
+ * @deadline: deadline jiffies for the operation
+ *
+ * SFF link @link is about to be reset. Initialize it. It first
+ * calls ata_std_prereset() and wait for !BSY if the port is
+ * being softreset.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ *
+ * RETURNS:
+ * 0 on success, -errno otherwise.
+ */
+int ata_sff_prereset(struct ata_link *link, unsigned long deadline)
+{
+ struct ata_port *ap = link->ap;
+ struct ata_eh_context *ehc = &link->eh_context;
+ int rc;
+
+ rc = ata_std_prereset(link, deadline);
+ if (rc)
+ return rc;
+
+ /* if we're about to do hardreset, nothing more to do */
+ if (ehc->i.action & ATA_EH_HARDRESET)
+ return 0;
+
+ /* wait for !BSY if we don't know that no device is attached */
+ if (!ata_link_offline(link)) {
+ rc = ata_sff_wait_ready(ap, deadline);
+ if (rc && rc != -ENODEV) {
+ ata_link_printk(link, KERN_WARNING, "device not ready "
+ "(errno=%d), forcing hardreset\n", rc);
+ ehc->i.action |= ATA_EH_HARDRESET;
+ }
+ }
+
+ return 0;
+}
+
+/**
* ata_devchk - PATA device presence detection
* @ap: ATA channel to examine
* @device: Device to examine (starting at zero)