static void __ata_port_freeze(struct ata_port *ap);
static void ata_eh_finish(struct ata_port *ap);
+#ifdef CONFIG_PM
static void ata_eh_handle_port_suspend(struct ata_port *ap);
static void ata_eh_handle_port_resume(struct ata_port *ap);
+static int ata_eh_suspend(struct ata_port *ap,
+ struct ata_device **r_failed_dev);
+static void ata_eh_prep_resume(struct ata_port *ap);
+static int ata_eh_resume(struct ata_port *ap, struct ata_device **r_failed_dev);
+#else /* CONFIG_PM */
+static void ata_eh_handle_port_suspend(struct ata_port *ap)
+{ }
+
+static void ata_eh_handle_port_resume(struct ata_port *ap)
+{ }
+
+static int ata_eh_suspend(struct ata_port *ap, struct ata_device **r_failed_dev)
+{
+ return 0;
+}
+
+static void ata_eh_prep_resume(struct ata_port *ap)
+{ }
+
+static int ata_eh_resume(struct ata_port *ap, struct ata_device **r_failed_dev)
+{
+ return 0;
+}
+#endif /* CONFIG_PM */
static void ata_ering_record(struct ata_ering *ering, int is_io,
unsigned int err_mask)
rc = prereset(ap);
if (rc) {
if (rc == -ENOENT) {
- ata_port_printk(ap, KERN_DEBUG, "port disabled. ignoring.\n");
+ ata_port_printk(ap, KERN_DEBUG,
+ "port disabled. ignoring.\n");
ap->eh_context.i.action &= ~ATA_EH_RESET_MASK;
+
+ for (i = 0; i < ATA_MAX_DEVICES; i++)
+ classes[i] = ATA_DEV_NONE;
+
+ rc = 0;
} else
ata_port_printk(ap, KERN_ERR,
"prereset failed (errno=%d)\n", rc);
{
struct ata_eh_context *ehc = &ap->eh_context;
struct ata_device *dev;
+ unsigned int new_mask = 0;
unsigned long flags;
int i, rc = 0;
DPRINTK("ENTER\n");
- for (i = 0; i < ATA_MAX_DEVICES; i++) {
+ /* For PATA drive side cable detection to work, IDENTIFY must
+ * be done backwards such that PDIAG- is released by the slave
+ * device before the master device is identified.
+ */
+ for (i = ATA_MAX_DEVICES - 1; i >= 0; i--) {
unsigned int action, readid_flags = 0;
dev = &ap->device[i];
if (action & ATA_EH_REVALIDATE && ata_dev_ready(dev)) {
if (ata_port_offline(ap)) {
rc = -EIO;
- break;
+ goto err;
}
ata_eh_about_to_do(ap, dev, ATA_EH_REVALIDATE);
rc = ata_dev_revalidate(dev, readid_flags);
if (rc)
- break;
+ goto err;
ata_eh_done(ap, dev, ATA_EH_REVALIDATE);
rc = ata_dev_read_id(dev, &dev->class, readid_flags,
dev->id);
- if (rc == 0) {
- ehc->i.flags |= ATA_EHI_PRINTINFO;
- rc = ata_dev_configure(dev);
- ehc->i.flags &= ~ATA_EHI_PRINTINFO;
- } else if (rc == -ENOENT) {
+ switch (rc) {
+ case 0:
+ new_mask |= 1 << i;
+ break;
+ case -ENOENT:
/* IDENTIFY was issued to non-existent
* device. No need to reset. Just
* thaw and kill the device.
*/
ata_eh_thaw_port(ap);
- dev->class = ATA_DEV_UNKNOWN;
- rc = 0;
- }
-
- if (rc) {
dev->class = ATA_DEV_UNKNOWN;
break;
+ default:
+ dev->class = ATA_DEV_UNKNOWN;
+ goto err;
}
+ }
+ }
- if (ata_dev_enabled(dev)) {
- spin_lock_irqsave(ap->lock, flags);
- ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
- spin_unlock_irqrestore(ap->lock, flags);
+ /* Configure new devices forward such that user doesn't see
+ * device detection messages backwards.
+ */
+ for (i = 0; i < ATA_MAX_DEVICES; i++) {
+ dev = &ap->device[i];
- /* new device discovered, configure xfermode */
- ehc->i.flags |= ATA_EHI_SETMODE;
- }
- }
+ if (!(new_mask & (1 << i)))
+ continue;
+
+ ehc->i.flags |= ATA_EHI_PRINTINFO;
+ rc = ata_dev_configure(dev);
+ ehc->i.flags &= ~ATA_EHI_PRINTINFO;
+ if (rc)
+ goto err;
+
+ spin_lock_irqsave(ap->lock, flags);
+ ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ /* new device discovered, configure xfermode */
+ ehc->i.flags |= ATA_EHI_SETMODE;
}
- if (rc)
- *r_failed_dev = dev;
+ return 0;
- DPRINTK("EXIT\n");
+ err:
+ *r_failed_dev = dev;
+ DPRINTK("EXIT rc=%d\n", rc);
return rc;
}
+#ifdef CONFIG_PM
/**
* ata_eh_suspend - handle suspend EH action
* @ap: target host port
DPRINTK("EXIT\n");
return 0;
}
+#endif /* CONFIG_PM */
static int ata_port_nr_enabled(struct ata_port *ap)
{
ata_eh_finish(ap);
}
+#ifdef CONFIG_PM
/**
* ata_eh_handle_port_suspend - perform port suspend operation
* @ap: port to suspend
}
spin_unlock_irqrestore(ap->lock, flags);
}
+#endif /* CONFIG_PM */