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libata-sff: port_task is SFF specific

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port_task is tightly bound to the standard SFF PIO HSM implementation.
Using it for any other purpose would be error-prone and there's no
such user and if some drivers need such feature, it would be much
better off using its own.  Move it inside CONFIG_ATA_SFF and rename it
to sff_pio_task.

The only function which is exposed to the core layer is
ata_sff_flush_pio_task() which is renamed from ata_port_flush_task()
and now also takes care of resetting hsm_task_state to HSM_ST_IDLE,
which is possible as it's now specific to PIO HSM.

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 21:41:38 +02:00
committed by Jeff Garzik
parent 5fe7454aa9
commit c429137a67
6 changed files with 63 additions and 96 deletions
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5
drivers/ata/libata.h
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@@ -79,7 +79,6 @@ extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
u64 block, u32 n_block, unsigned int tf_flags,
unsigned int tag);
extern u64 ata_tf_read_block(struct ata_taskfile *tf, struct ata_device *dev);
extern void ata_port_flush_task(struct ata_port *ap);
extern unsigned ata_exec_internal(struct ata_device *dev,
struct ata_taskfile *tf, const u8 *cdb,
int dma_dir, void *buf, unsigned int buflen,
@@ -202,11 +201,13 @@ 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_flush_pio_task(struct ata_port *ap);
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_flush_pio_task(struct ata_port *ap)
{ }
static inline void ata_sff_port_init(struct ata_port *ap)
{ }
static inline int ata_sff_init(void)