Add ready counting function - ata_port_nr_ready(). This is in
preparation for powersave support.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/scsi/libata-core.c | 10 ++++++++++
drivers/scsi/libata.h | 1 +
2 files changed, 11 insertions(+), 0 deletions(-)
efc7e0e82005a0135d9b658af156d6388c49367d
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 8e75899..3e35839 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -120,6 +120,16 @@ int ata_port_nr_enabled(struct ata_port
return cnt;
}
+int ata_port_nr_ready(struct ata_port *ap)
+{
+ int i, cnt = 0;
+
+ for (i = 0; i < ATA_MAX_DEVICES; i++)
+ if (ata_dev_ready(&ap->device[i]))
+ cnt++;
+ return cnt;
+}
+
/**
* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
* @tf: Taskfile to convert
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index d77b5ff..ce44e06 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -50,6 +50,7 @@ extern int atapi_dmadir;
extern int libata_fua;
extern int ata_port_nr_vacant(struct ata_port *ap);
extern int ata_port_nr_enabled(struct ata_port *ap);
+extern int ata_port_nr_ready(struct ata_port *ap);
extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
extern int ata_rwcmd_protocol(struct ata_queued_cmd *qc);
extern void ata_dev_disable(struct ata_device *dev);
--
1.3.2
-
: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
