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pata: expose set_mode method so it can be wrapped

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This splits set_mode into do_set_mode and the wrapper so that a driver can
call the standard method inside its own.  This in theory also obsoletes
->post_set_mode().

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan 2007-03-06 02:37:52 -08:00 committed by Jeff Garzik
parent fcc2f69a6f
commit 04351821b4
2 changed files with 31 additions and 7 deletions
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37
drivers/ata/libata-core.c
View File

@ -2519,12 +2519,13 @@ static int ata_dev_set_mode(struct ata_device *dev)
}
/**
* ata_set_mode - Program timings and issue SET FEATURES - XFER
* ata_do_set_mode - Program timings and issue SET FEATURES - XFER
* @ap: port on which timings will be programmed
* @r_failed_dev: out paramter for failed device
*
* Set ATA device disk transfer mode (PIO3, UDMA6, etc.). If
* ata_set_mode() fails, pointer to the failing device is
* Standard implementation of the function used to tune and set
* ATA device disk transfer mode (PIO3, UDMA6, etc.). If
* ata_dev_set_mode() fails, pointer to the failing device is
* returned in @r_failed_dev.
*
* LOCKING:
@ -2533,14 +2534,12 @@ static int ata_dev_set_mode(struct ata_device *dev)
* RETURNS:
* 0 on success, negative errno otherwise
*/
int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
{
struct ata_device *dev;
int i, rc = 0, used_dma = 0, found = 0;
/* has private set_mode? */
if (ap->ops->set_mode)
return ap->ops->set_mode(ap, r_failed_dev);
/* step 1: calculate xfer_mask */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
@ -2624,6 +2623,29 @@ int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
return rc;
}
/**
* ata_set_mode - Program timings and issue SET FEATURES - XFER
* @ap: port on which timings will be programmed
* @r_failed_dev: out paramter for failed device
*
* Set ATA device disk transfer mode (PIO3, UDMA6, etc.). If
* ata_set_mode() fails, pointer to the failing device is
* returned in @r_failed_dev.
*
* LOCKING:
* PCI/etc. bus probe sem.
*
* RETURNS:
* 0 on success, negative errno otherwise
*/
int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
{
/* has private set_mode? */
if (ap->ops->set_mode)
return ap->ops->set_mode(ap, r_failed_dev);
return ata_do_set_mode(ap, r_failed_dev);
}
/**
* ata_tf_to_host - issue ATA taskfile to host controller
* @ap: port to which command is being issued
@ -6413,6 +6435,7 @@ EXPORT_SYMBOL_GPL(ata_altstatus);
EXPORT_SYMBOL_GPL(ata_exec_command);
EXPORT_SYMBOL_GPL(ata_port_start);
EXPORT_SYMBOL_GPL(ata_interrupt);
EXPORT_SYMBOL_GPL(ata_do_set_mode);
EXPORT_SYMBOL_GPL(ata_data_xfer);
EXPORT_SYMBOL_GPL(ata_data_xfer_noirq);
EXPORT_SYMBOL_GPL(ata_qc_prep);

1
include/linux/libata.h
View File

@ -831,6 +831,7 @@ extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
int queue_depth);
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
extern int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
extern u8 ata_irq_on(struct ata_port *ap);
extern u8 ata_dummy_irq_on(struct ata_port *ap);
extern u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq);