libata: implement protocol tests
Implement protocol tests - ata_is_atapi(), ata_is_nodata(),
ata_is_pio(), ata_is_dma(), ata_is_ncq() and ata_is_data() and use
them to replace is_atapi_taskfile() and hard coded protocol tests.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ef5e6b6..5eee91c 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1511,7 +1511,7 @@
{
struct ata_port *ap = qc->ap;
struct ahci_port_priv *pp = ap->private_data;
- int is_atapi = is_atapi_taskfile(&qc->tf);
+ int is_atapi = ata_is_atapi(qc->tf.protocol);
void *cmd_tbl;
u32 opts;
const u32 cmd_fis_len = 5; /* five dwords */