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libata-core: Expose gtm methods for driver use

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Talk to the dark side our driver has to, yes. Much misleading is the
data. Store it in a structure we do so that it may be parsed.

Signed-off-by: Alan Cox <alan@redhat.com>
--
Whats small, old and shouts phrases out of order across mountains ?
Yodla..
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2007-10-04 21:28:18 +01:00 committed by Jeff Garzik
parent 70edb185db
commit badff03df7
2 changed files with 8 additions and 2 deletions
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8
drivers/ata/libata-acpi.c
View File

@ -200,7 +200,7 @@ void ata_acpi_associate(struct ata_host *host)
* RETURNS:
* 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure.
*/
static int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
{
struct acpi_buffer output = { .length = ACPI_ALLOCATE_BUFFER };
union acpi_object *out_obj;
@ -244,6 +244,8 @@ static int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
return rc;
}
EXPORT_SYMBOL_GPL(ata_acpi_gtm);
/**
* ata_acpi_stm - execute _STM
* @ap: target ATA port
@ -257,7 +259,7 @@ static int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm)
* RETURNS:
* 0 on success, -ENOENT if _STM doesn't exist, -errno on failure.
*/
static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
{
acpi_status status;
struct acpi_object_list input;
@ -289,6 +291,8 @@ static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
return 0;
}
EXPORT_SYMBOL_GPL(ata_acpi_stm);
/**
* ata_dev_get_GTF - get the drive bootup default taskfile settings
* @dev: target ATA device

2
include/linux/libata.h
View File

@ -929,6 +929,8 @@ enum {
/* libata-acpi.c */
#ifdef CONFIG_ATA_ACPI
extern int ata_acpi_cbl_80wire(struct ata_port *ap);
int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm);
int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *stm);
#else
static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; }
#endif