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Commit badff03d authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik
Browse files

libata-core: Expose gtm methods for driver use 



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: default avatarAlan Cox <alan@redhat.com>
--
Whats small, old and shouts phrases out of order across mountains ?
Yodla..
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 70edb185

drivers/ata/libata-acpi.c

+6 −2
Original line number Diff line number Diff line
@@ -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

include/linux/libata.h

+2 −0
Original line number Diff line number Diff line
@@ -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