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libata: add CONFIG_PM to libata core layer

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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>
This commit is contained in:
Tejun Heo 2007-03-02 17:32:47 +09:00 committed by Jeff Garzik
parent 438ac6d5e3
commit 6ffa01d88c
4 changed files with 46 additions and 0 deletions
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11
drivers/ata/libata-core.c
View file

@ -5354,6 +5354,7 @@ int ata_flush_cache(struct ata_device *dev)
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 @@ void ata_host_resume(struct ata_host *host)
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 @@ int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits)
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 @@ int ata_pci_device_resume(struct pci_dev *pdev)
ata_host_resume(host);
return rc;
}
#endif /* CONFIG_PM */
#endif /* CONFIG_PCI */
@ -6363,8 +6368,10 @@ EXPORT_SYMBOL_GPL(sata_scr_write);
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(pci_test_config_bits);
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);

29
drivers/ata/libata-eh.c
View file

@ -52,8 +52,33 @@ enum {
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 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
return rc;
}
#ifdef CONFIG_PM
/**
* ata_eh_suspend - handle suspend EH action
* @ap: target host port
@ -1947,6 +1973,7 @@ static int ata_eh_resume(struct ata_port *ap, struct ata_device **r_failed_dev)
DPRINTK("EXIT\n");
return 0;
}
#endif /* CONFIG_PM */
static int ata_port_nr_enabled(struct ata_port *ap)
{
@ -2249,6 +2276,7 @@ void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
ata_eh_finish(ap);
}
#ifdef CONFIG_PM
/**
* ata_eh_handle_port_suspend - perform port suspend operation
* @ap: port to suspend
@ -2364,3 +2392,4 @@ static void ata_eh_handle_port_resume(struct ata_port *ap)
}
spin_unlock_irqrestore(ap->lock, flags);
}
#endif /* CONFIG_PM */

2
drivers/ata/libata-scsi.c
View file

@ -510,6 +510,7 @@ static void ata_dump_status(unsigned id, struct ata_taskfile *tf)
}
}
#ifdef CONFIG_PM
/**
* ata_scsi_device_suspend - suspend ATA device associated with sdev
* @sdev: the SCSI device to suspend
@ -634,6 +635,7 @@ int ata_scsi_device_resume(struct scsi_device *sdev)
sdev->sdev_gendev.power.power_state = PMSG_ON;
return 0;
}
#endif /* CONFIG_PM */
/**
* ata_to_sense_error - convert ATA error to SCSI error

4
include/linux/libata.h
View file

@ -718,10 +718,12 @@ extern void ata_std_ports(struct ata_ioports *ioaddr);
extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
unsigned int n_ports);
extern void ata_pci_remove_one (struct pci_dev *pdev);
#ifdef CONFIG_PM
extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
extern int ata_pci_device_resume(struct pci_dev *pdev);
#endif
extern int ata_pci_clear_simplex(struct pci_dev *pdev);
#endif /* CONFIG_PCI */
extern int ata_device_add(const struct ata_probe_ent *ent);
@ -747,10 +749,12 @@ extern int sata_scr_write(struct ata_port *ap, int reg, u32 val);
extern int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val);
extern int ata_port_online(struct ata_port *ap);
extern int ata_port_offline(struct ata_port *ap);
#ifdef CONFIG_PM
extern int ata_scsi_device_resume(struct scsi_device *);
extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t mesg);
extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
extern void ata_host_resume(struct ata_host *host);
#endif
extern int ata_ratelimit(void);
extern int ata_busy_sleep(struct ata_port *ap,
unsigned long timeout_pat, unsigned long timeout);