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libata-sff: introduce ata_sff_init/exit() and ata_sff_port_init()

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In preparation of proper SFF/BMDMA separation, introduce
ata_sff_init/exit() and ata_sff_port_init().  These functions
currently don't do anything.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2010-05-10 21:41:35 +02:00 committed by Jeff Garzik
parent c7087652e1
commit 270390e1ae
3 changed files with 50 additions and 6 deletions
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23
drivers/ata/libata-core.c
View file

@ -5670,6 +5670,8 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
ap->stats.unhandled_irq = 1;
ap->stats.idle_irq = 1;
#endif
ata_sff_port_init(ap);
return ap;
}
@ -6584,6 +6586,8 @@ static void __init ata_parse_force_param(void)
static int __init ata_init(void)
{
int rc = -ENOMEM;
ata_parse_force_param();
/*
@ -6595,24 +6599,31 @@ static int __init ata_init(void)
*/
ata_wq = create_workqueue("ata");
if (!ata_wq)
goto free_force_tbl;
goto fail;
ata_aux_wq = create_singlethread_workqueue("ata_aux");
if (!ata_aux_wq)
goto free_wq;
goto fail;
rc = ata_sff_init();
if (rc)
goto fail;
printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
return 0;
free_wq:
destroy_workqueue(ata_wq);
free_force_tbl:
fail:
kfree(ata_force_tbl);
return -ENOMEM;
if (ata_wq)
destroy_workqueue(ata_wq);
if (ata_aux_wq)
destroy_workqueue(ata_aux_wq);
return rc;
}
static void __exit ata_exit(void)
{
ata_sff_exit();
kfree(ata_force_tbl);
destroy_workqueue(ata_wq);
destroy_workqueue(ata_aux_wq);

23
drivers/ata/libata-sff.c
View file

@ -3061,3 +3061,26 @@ void ata_pci_bmdma_init(struct ata_host *host)
EXPORT_SYMBOL_GPL(ata_pci_bmdma_init);
#endif /* CONFIG_PCI */
/**
* ata_sff_port_init - Initialize SFF/BMDMA ATA port
* @ap: Port to initialize
*
* Called on port allocation to initialize SFF/BMDMA specific
* fields.
*
* LOCKING:
* None.
*/
void ata_sff_port_init(struct ata_port *ap)
{
}
int __init ata_sff_init(void)
{
return 0;
}
void __exit ata_sff_exit(void)
{
}

10
drivers/ata/libata.h
View file

@ -203,6 +203,16 @@ static inline int sata_pmp_attach(struct ata_device *dev)
/* libata-sff.c */
#ifdef CONFIG_ATA_SFF
extern void ata_pio_task(struct work_struct *work);
extern void ata_sff_port_init(struct ata_port *ap);
extern int ata_sff_init(void);
extern void ata_sff_exit(void);
#else /* CONFIG_ATA_SFF */
static inline void ata_sff_port_init(struct ata_port *ap)
{ }
static inline int ata_sff_init(void)
{ return 0; }
static inline void ata_sff_exit(void)
{ }
#endif /* CONFIG_ATA_SFF */
#endif /* __LIBATA_H__ */