libata: add CONFIG_PM to libata core layer
Conditionalize all PM related stuff in libata core layer using
CONFIG_PM.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 606145e..dc362fa 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5354,6 +5354,7 @@
return 0;
}
+#ifdef CONFIG_PM
static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg,
unsigned int action, unsigned int ehi_flags,
int wait)
@@ -5469,6 +5470,7 @@
ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0);
host->dev->power.power_state = PMSG_ON;
}
+#endif
/**
* ata_port_start - Set port up for dma.
@@ -6104,6 +6106,7 @@
return (tmp == bits->val) ? 1 : 0;
}
+#ifdef CONFIG_PM
void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg)
{
pci_save_state(pdev);
@@ -6155,6 +6158,8 @@
ata_host_resume(host);
return rc;
}
+#endif /* CONFIG_PM */
+
#endif /* CONFIG_PCI */
@@ -6363,8 +6368,10 @@
EXPORT_SYMBOL_GPL(sata_scr_write_flush);
EXPORT_SYMBOL_GPL(ata_port_online);
EXPORT_SYMBOL_GPL(ata_port_offline);
+#ifdef CONFIG_PM
EXPORT_SYMBOL_GPL(ata_host_suspend);
EXPORT_SYMBOL_GPL(ata_host_resume);
+#endif /* CONFIG_PM */
EXPORT_SYMBOL_GPL(ata_id_string);
EXPORT_SYMBOL_GPL(ata_id_c_string);
EXPORT_SYMBOL_GPL(ata_id_to_dma_mode);
@@ -6380,16 +6387,20 @@
EXPORT_SYMBOL_GPL(ata_pci_init_native_mode);
EXPORT_SYMBOL_GPL(ata_pci_init_one);
EXPORT_SYMBOL_GPL(ata_pci_remove_one);
+#ifdef CONFIG_PM
EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend);
EXPORT_SYMBOL_GPL(ata_pci_device_do_resume);
EXPORT_SYMBOL_GPL(ata_pci_device_suspend);
EXPORT_SYMBOL_GPL(ata_pci_device_resume);
+#endif /* CONFIG_PM */
EXPORT_SYMBOL_GPL(ata_pci_default_filter);
EXPORT_SYMBOL_GPL(ata_pci_clear_simplex);
#endif /* CONFIG_PCI */
+#ifdef CONFIG_PM
EXPORT_SYMBOL_GPL(ata_scsi_device_suspend);
EXPORT_SYMBOL_GPL(ata_scsi_device_resume);
+#endif /* CONFIG_PM */
EXPORT_SYMBOL_GPL(ata_eng_timeout);
EXPORT_SYMBOL_GPL(ata_port_schedule_eh);
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index cad0d6d..7349c3d 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -52,8 +52,33 @@
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)
@@ -1790,6 +1815,7 @@
return rc;
}
+#ifdef CONFIG_PM
/**
* ata_eh_suspend - handle suspend EH action
* @ap: target host port
@@ -1947,6 +1973,7 @@
DPRINTK("EXIT\n");
return 0;
}
+#endif /* CONFIG_PM */
static int ata_port_nr_enabled(struct ata_port *ap)
{
@@ -2249,6 +2276,7 @@
ata_eh_finish(ap);
}
+#ifdef CONFIG_PM
/**
* ata_eh_handle_port_suspend - perform port suspend operation
* @ap: port to suspend
@@ -2364,3 +2392,4 @@
}
spin_unlock_irqrestore(ap->lock, flags);
}
+#endif /* CONFIG_PM */
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 00a9a6c..6cc817a 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -510,6 +510,7 @@
}
}
+#ifdef CONFIG_PM
/**
* ata_scsi_device_suspend - suspend ATA device associated with sdev
* @sdev: the SCSI device to suspend
@@ -634,6 +635,7 @@
sdev->sdev_gendev.power.power_state = PMSG_ON;
return 0;
}
+#endif /* CONFIG_PM */
/**
* ata_to_sense_error - convert ATA error to SCSI error